From 7bfbaa3881fe0a6e4a12b4ff2197e044cb05aff8 Mon Sep 17 00:00:00 2001
From: Florian Bartels <Florian.Bartels@elektrobit.com>
Date: Thu, 22 Sep 2022 12:40:37 +0200
Subject: [PATCH 1/5] Detect panic strategy using `rustc --print cfg`

Instead of relying on a command line parameter, detect if a target
is able to unwind or not.
Ignore tests that require unwinding on targets that don't support it.
---
 src/tools/compiletest/src/common.rs | 18 ++++++++++++++----
 src/tools/compiletest/src/header.rs |  5 ++---
 src/tools/compiletest/src/main.rs   | 10 +---------
 3 files changed, 17 insertions(+), 16 deletions(-)

diff --git a/src/tools/compiletest/src/common.rs b/src/tools/compiletest/src/common.rs
index 64df76e27720d..4994fb9bbf941 100644
--- a/src/tools/compiletest/src/common.rs
+++ b/src/tools/compiletest/src/common.rs
@@ -278,10 +278,6 @@ pub struct Config {
     /// override this setting.
     pub optimize_tests: bool,
 
-    /// What panic strategy the target is built with.  Unwind supports Abort, but
-    /// not vice versa.
-    pub target_panic: PanicStrategy,
-
     /// Target system to be tested
     pub target: String,
 
@@ -426,6 +422,10 @@ impl Config {
         *&self.target_cfg().pointer_width
     }
 
+    pub fn can_unwind(&self) -> bool {
+        self.target_cfg().panic == PanicStrategy::Unwind
+    }
+
     pub fn has_asm_support(&self) -> bool {
         static ASM_SUPPORTED_ARCHS: &[&str] = &[
             "x86", "x86_64", "arm", "aarch64", "riscv32",
@@ -446,6 +446,7 @@ pub struct TargetCfg {
     families: Vec<String>,
     pointer_width: u32,
     endian: Endian,
+    panic: PanicStrategy,
 }
 
 #[derive(Eq, PartialEq, Clone, Debug)]
@@ -481,6 +482,7 @@ impl TargetCfg {
         let mut families = Vec::new();
         let mut pointer_width = None;
         let mut endian = None;
+        let mut panic = None;
         for line in print_cfg.lines() {
             if let Some((name, value)) = line.split_once('=') {
                 let value = value.trim_matches('"');
@@ -498,6 +500,13 @@ impl TargetCfg {
                             s => panic!("unexpected {s}"),
                         })
                     }
+                    "panic" => {
+                        panic = match value {
+                            "abort" => Some(PanicStrategy::Abort),
+                            "unwind" => Some(PanicStrategy::Unwind),
+                            s => panic!("unexpected {s}"),
+                        }
+                    }
                     _ => {}
                 }
             }
@@ -510,6 +519,7 @@ impl TargetCfg {
             families,
             pointer_width: pointer_width.unwrap(),
             endian: endian.unwrap(),
+            panic: panic.unwrap(),
         }
     }
 }
diff --git a/src/tools/compiletest/src/header.rs b/src/tools/compiletest/src/header.rs
index 3ff1cbf20cd26..6f85227500361 100644
--- a/src/tools/compiletest/src/header.rs
+++ b/src/tools/compiletest/src/header.rs
@@ -7,7 +7,7 @@ use std::path::{Path, PathBuf};
 
 use tracing::*;
 
-use crate::common::{CompareMode, Config, Debugger, FailMode, Mode, PanicStrategy, PassMode};
+use crate::common::{CompareMode, Config, Debugger, FailMode, Mode, PassMode};
 use crate::util;
 use crate::{extract_cdb_version, extract_gdb_version};
 
@@ -949,8 +949,7 @@ pub fn make_test_description<R: Read>(
         ignore |= !has_memtag && config.parse_name_directive(ln, "needs-sanitizer-memtag");
         ignore |= !has_shadow_call_stack
             && config.parse_name_directive(ln, "needs-sanitizer-shadow-call-stack");
-        ignore |= config.target_panic == PanicStrategy::Abort
-            && config.parse_name_directive(ln, "needs-unwind");
+        ignore |= !config.can_unwind() && config.parse_name_directive(ln, "needs-unwind");
         ignore |= config.target == "wasm32-unknown-unknown"
             && config.parse_name_directive(ln, directives::CHECK_RUN_RESULTS);
         ignore |= config.debugger == Some(Debugger::Cdb) && ignore_cdb(config, ln);
diff --git a/src/tools/compiletest/src/main.rs b/src/tools/compiletest/src/main.rs
index 38c7b87fc0d9d..dccfd4e0d9807 100644
--- a/src/tools/compiletest/src/main.rs
+++ b/src/tools/compiletest/src/main.rs
@@ -5,9 +5,7 @@
 
 extern crate test;
 
-use crate::common::{
-    expected_output_path, output_base_dir, output_relative_path, PanicStrategy, UI_EXTENSIONS,
-};
+use crate::common::{expected_output_path, output_base_dir, output_relative_path, UI_EXTENSIONS};
 use crate::common::{CompareMode, Config, Debugger, Mode, PassMode, TestPaths};
 use crate::util::logv;
 use getopts::Options;
@@ -105,7 +103,6 @@ pub fn parse_config(args: Vec<String>) -> Config {
         .optmulti("", "host-rustcflags", "flags to pass to rustc for host", "FLAGS")
         .optmulti("", "target-rustcflags", "flags to pass to rustc for target", "FLAGS")
         .optflag("", "optimize-tests", "run tests with optimizations enabled")
-        .optopt("", "target-panic", "what panic strategy the target supports", "unwind | abort")
         .optflag("", "verbose", "run tests verbosely, showing all output")
         .optflag(
             "",
@@ -258,11 +255,6 @@ pub fn parse_config(args: Vec<String>) -> Config {
         host_rustcflags: Some(matches.opt_strs("host-rustcflags").join(" ")),
         target_rustcflags: Some(matches.opt_strs("target-rustcflags").join(" ")),
         optimize_tests: matches.opt_present("optimize-tests"),
-        target_panic: match matches.opt_str("target-panic").as_deref() {
-            Some("unwind") | None => PanicStrategy::Unwind,
-            Some("abort") => PanicStrategy::Abort,
-            _ => panic!("unknown `--target-panic` option `{}` given", mode),
-        },
         target,
         host: opt_str2(matches.opt_str("host")),
         cdb,

From 0b0027fd2ed31e355fa560407a32c924f7f8cad3 Mon Sep 17 00:00:00 2001
From: Florian Bartels <Florian.Bartels@elektrobit.com>
Date: Thu, 22 Sep 2022 14:25:10 +0200
Subject: [PATCH 2/5] Restore ignore tag

This test case actually requires std::process.
---
 src/test/ui/async-await/async-fn-size-moved-locals.rs          | 1 -
 .../issue-65419/issue-65419-async-fn-resume-after-panic.rs     | 1 -
 src/test/ui/binding/fn-arg-incomplete-pattern-drop-order.rs    | 1 -
 src/test/ui/builtin-clone-unwind.rs                            | 1 -
 src/test/ui/catch-unwind-bang.rs                               | 1 -
 src/test/ui/cfg/cfg-panic.rs                                   | 3 ---
 .../2229_closure_analysis/migrations/mir_calls_to_shims.rs     | 1 -
 src/test/ui/drop/dynamic-drop-async.rs                         | 1 -
 src/test/ui/drop/dynamic-drop.rs                               | 1 -
 src/test/ui/drop/repeat-drop.rs                                | 3 ---
 src/test/ui/extern-flag/empty-extern-arg.rs                    | 1 -
 .../issue-64655-allow-unwind-when-calling-panic-directly.rs    | 1 -
 .../ui/extern/issue-64655-extern-rust-must-allow-unwind.rs     | 1 -
 src/test/ui/generator/panic-drops-resume.rs                    | 2 --
 src/test/ui/generator/panic-drops.rs                           | 1 -
 src/test/ui/generator/panic-safe.rs                            | 1 -
 src/test/ui/generator/resume-after-return.rs                   | 1 -
 src/test/ui/intrinsics/panic-uninitialized-zeroed.rs           | 1 -
 src/test/ui/issues/issue-14875.rs                              | 1 -
 src/test/ui/issues/issue-29948.rs                              | 1 -
 src/test/ui/issues/issue-43853.rs                              | 1 -
 src/test/ui/issues/issue-46519.rs                              | 1 -
 src/test/ui/iterators/iter-count-overflow-debug.rs             | 1 -
 src/test/ui/iterators/iter-position-overflow-debug.rs          | 1 -
 src/test/ui/iterators/iter-step-overflow-debug.rs              | 1 -
 src/test/ui/iterators/iter-sum-overflow-debug.rs               | 1 -
 src/test/ui/iterators/iter-sum-overflow-overflow-checks.rs     | 1 -
 src/test/ui/macros/macro-comma-behavior-rpass.rs               | 1 -
 src/test/ui/mir/mir_calls_to_shims.rs                          | 1 -
 src/test/ui/mir/mir_codegen_calls_diverging_drops.rs           | 1 -
 src/test/ui/mir/mir_drop_order.rs                              | 1 -
 src/test/ui/mir/mir_drop_panics.rs                             | 1 -
 src/test/ui/mir/mir_let_chains_drop_order.rs                   | 1 -
 .../ui/numbers-arithmetic/next-power-of-two-overflow-debug.rs  | 1 -
 src/test/ui/panic-handler/weak-lang-item.rs                    | 1 -
 src/test/ui/panic-runtime/need-abort-got-unwind.rs             | 1 -
 src/test/ui/panic-runtime/transitive-link-a-bunch.rs           | 1 -
 src/test/ui/panic-runtime/want-unwind-got-abort.rs             | 1 -
 src/test/ui/panic-runtime/want-unwind-got-abort2.rs            | 1 -
 src/test/ui/panic-while-printing.rs                            | 1 -
 src/test/ui/privacy/reachable-unnameable-items.rs              | 1 -
 src/test/ui/proc-macro/expand-with-a-macro.rs                  | 1 -
 .../ui/rfc-1937-termination-trait/termination-trait-in-test.rs | 1 -
 src/test/ui/rfc-2091-track-caller/std-panic-locations.rs       | 1 -
 src/test/ui/rfcs/rfc1857-drop-order.rs                         | 1 -
 src/test/ui/runtime/rt-explody-panic-payloads.rs               | 3 ---
 src/test/ui/test-attrs/test-panic-while-printing.rs            | 1 -
 src/test/ui/test-attrs/test-should-fail-good-message.rs        | 1 -
 src/test/ui/unwind-abis/ffi-unwind-calls-lint.rs               | 1 -
 src/test/ui/unwind-no-uwtable.rs                               | 1 -
 50 files changed, 57 deletions(-)

diff --git a/src/test/ui/async-await/async-fn-size-moved-locals.rs b/src/test/ui/async-await/async-fn-size-moved-locals.rs
index 9e3794b0484e7..79b7239f3590d 100644
--- a/src/test/ui/async-await/async-fn-size-moved-locals.rs
+++ b/src/test/ui/async-await/async-fn-size-moved-locals.rs
@@ -7,7 +7,6 @@
 //
 // See issue #59123 for a full explanation.
 
-// ignore-emscripten (sizes don't match)
 // needs-unwind Size of Futures change on panic=abort
 // run-pass
 
diff --git a/src/test/ui/async-await/issues/issue-65419/issue-65419-async-fn-resume-after-panic.rs b/src/test/ui/async-await/issues/issue-65419/issue-65419-async-fn-resume-after-panic.rs
index 5e71229beb5f9..b4ea4c9f68664 100644
--- a/src/test/ui/async-await/issues/issue-65419/issue-65419-async-fn-resume-after-panic.rs
+++ b/src/test/ui/async-await/issues/issue-65419/issue-65419-async-fn-resume-after-panic.rs
@@ -6,7 +6,6 @@
 // error-pattern: thread 'main' panicked at '`async fn` resumed after panicking'
 // edition:2018
 // ignore-wasm no panic or subprocess support
-// ignore-emscripten no panic or subprocess support
 
 #![feature(generators, generator_trait)]
 
diff --git a/src/test/ui/binding/fn-arg-incomplete-pattern-drop-order.rs b/src/test/ui/binding/fn-arg-incomplete-pattern-drop-order.rs
index 684172ca61cca..0450fe8abbd14 100644
--- a/src/test/ui/binding/fn-arg-incomplete-pattern-drop-order.rs
+++ b/src/test/ui/binding/fn-arg-incomplete-pattern-drop-order.rs
@@ -3,7 +3,6 @@
 // Check that partially moved from function parameters are dropped after the
 // named bindings that move from them.
 
-// ignore-wasm32-bare compiled with panic=abort by default
 
 use std::{panic, cell::RefCell};
 
diff --git a/src/test/ui/builtin-clone-unwind.rs b/src/test/ui/builtin-clone-unwind.rs
index 3623c4a4dd05d..16add6ff2f68f 100644
--- a/src/test/ui/builtin-clone-unwind.rs
+++ b/src/test/ui/builtin-clone-unwind.rs
@@ -3,7 +3,6 @@
 
 #![allow(unused_variables)]
 #![allow(unused_imports)]
-// ignore-wasm32-bare compiled with panic=abort by default
 
 // Test that builtin implementations of `Clone` cleanup everything
 // in case of unwinding.
diff --git a/src/test/ui/catch-unwind-bang.rs b/src/test/ui/catch-unwind-bang.rs
index b31b5cab5b724..fb3503937cb54 100644
--- a/src/test/ui/catch-unwind-bang.rs
+++ b/src/test/ui/catch-unwind-bang.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 
 fn worker() -> ! {
     panic!()
diff --git a/src/test/ui/cfg/cfg-panic.rs b/src/test/ui/cfg/cfg-panic.rs
index fb3e5059c8199..2de72d54a481a 100644
--- a/src/test/ui/cfg/cfg-panic.rs
+++ b/src/test/ui/cfg/cfg-panic.rs
@@ -1,9 +1,6 @@
 // build-pass
 // compile-flags: -C panic=unwind
 // needs-unwind
-// ignore-emscripten no panic_unwind implementation
-// ignore-wasm32     no panic_unwind implementation
-// ignore-wasm64     no panic_unwind implementation
 
 
 #[cfg(panic = "abort")]
diff --git a/src/test/ui/closures/2229_closure_analysis/migrations/mir_calls_to_shims.rs b/src/test/ui/closures/2229_closure_analysis/migrations/mir_calls_to_shims.rs
index 6b0b10521740e..52e96d013a265 100644
--- a/src/test/ui/closures/2229_closure_analysis/migrations/mir_calls_to_shims.rs
+++ b/src/test/ui/closures/2229_closure_analysis/migrations/mir_calls_to_shims.rs
@@ -3,7 +3,6 @@
 
 #![deny(rust_2021_incompatible_closure_captures)]
 //~^ NOTE: the lint level is defined here
-// ignore-wasm32-bare compiled with panic=abort by default
 #![feature(fn_traits)]
 #![feature(never_type)]
 
diff --git a/src/test/ui/drop/dynamic-drop-async.rs b/src/test/ui/drop/dynamic-drop-async.rs
index 13bd71ecb3389..8f1cc6691cd8d 100644
--- a/src/test/ui/drop/dynamic-drop-async.rs
+++ b/src/test/ui/drop/dynamic-drop-async.rs
@@ -6,7 +6,6 @@
 // run-pass
 // needs-unwind
 // edition:2018
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![allow(unused)]
 
diff --git a/src/test/ui/drop/dynamic-drop.rs b/src/test/ui/drop/dynamic-drop.rs
index e706867742337..9e51d3adaaa68 100644
--- a/src/test/ui/drop/dynamic-drop.rs
+++ b/src/test/ui/drop/dynamic-drop.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![feature(generators, generator_trait)]
 
diff --git a/src/test/ui/drop/repeat-drop.rs b/src/test/ui/drop/repeat-drop.rs
index a43612e5d8587..8fd46ecaf4420 100644
--- a/src/test/ui/drop/repeat-drop.rs
+++ b/src/test/ui/drop/repeat-drop.rs
@@ -1,8 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare no unwinding panic
-// ignore-avr no unwinding panic
-// ignore-nvptx64 no unwinding panic
 
 static mut CHECK: usize = 0;
 
diff --git a/src/test/ui/extern-flag/empty-extern-arg.rs b/src/test/ui/extern-flag/empty-extern-arg.rs
index 3170537b0e0a0..a371afb128cab 100644
--- a/src/test/ui/extern-flag/empty-extern-arg.rs
+++ b/src/test/ui/extern-flag/empty-extern-arg.rs
@@ -1,6 +1,5 @@
 // compile-flags: --extern std=
 // error-pattern: extern location for std does not exist
 // needs-unwind since it affects the error output
-// ignore-emscripten compiled with panic=abort, personality not required
 
 fn main() {}
diff --git a/src/test/ui/extern/issue-64655-allow-unwind-when-calling-panic-directly.rs b/src/test/ui/extern/issue-64655-allow-unwind-when-calling-panic-directly.rs
index 7a91cbdc2f5d4..233120c92f38b 100644
--- a/src/test/ui/extern/issue-64655-allow-unwind-when-calling-panic-directly.rs
+++ b/src/test/ui/extern/issue-64655-allow-unwind-when-calling-panic-directly.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 // ignore-emscripten no threads support
 
 // rust-lang/rust#64655: with panic=unwind, a panic from a subroutine
diff --git a/src/test/ui/extern/issue-64655-extern-rust-must-allow-unwind.rs b/src/test/ui/extern/issue-64655-extern-rust-must-allow-unwind.rs
index e84ff41b344a7..3b263e58cbe84 100644
--- a/src/test/ui/extern/issue-64655-extern-rust-must-allow-unwind.rs
+++ b/src/test/ui/extern/issue-64655-extern-rust-must-allow-unwind.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 // ignore-emscripten no threads support
 
 // rust-lang/rust#64655: with panic=unwind, a panic from a subroutine
diff --git a/src/test/ui/generator/panic-drops-resume.rs b/src/test/ui/generator/panic-drops-resume.rs
index 8d8eb6a97b15a..4c3caeb14d67e 100644
--- a/src/test/ui/generator/panic-drops-resume.rs
+++ b/src/test/ui/generator/panic-drops-resume.rs
@@ -2,8 +2,6 @@
 
 // run-pass
 // needs-unwind
-// ignore-wasm       no unwind support
-// ignore-emscripten no unwind support
 
 #![feature(generators, generator_trait)]
 
diff --git a/src/test/ui/generator/panic-drops.rs b/src/test/ui/generator/panic-drops.rs
index a9de4e7fc7d25..65001fd879bb0 100644
--- a/src/test/ui/generator/panic-drops.rs
+++ b/src/test/ui/generator/panic-drops.rs
@@ -1,7 +1,6 @@
 // run-pass
 // needs-unwind
 
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![feature(generators, generator_trait)]
 
diff --git a/src/test/ui/generator/panic-safe.rs b/src/test/ui/generator/panic-safe.rs
index 14a0c8dbaf1da..3db80bb582151 100644
--- a/src/test/ui/generator/panic-safe.rs
+++ b/src/test/ui/generator/panic-safe.rs
@@ -1,7 +1,6 @@
 // run-pass
 // needs-unwind
 
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![feature(generators, generator_trait)]
 
diff --git a/src/test/ui/generator/resume-after-return.rs b/src/test/ui/generator/resume-after-return.rs
index 538609b981adf..01a059a161cea 100644
--- a/src/test/ui/generator/resume-after-return.rs
+++ b/src/test/ui/generator/resume-after-return.rs
@@ -1,7 +1,6 @@
 // run-pass
 // needs-unwind
 
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![feature(generators, generator_trait)]
 
diff --git a/src/test/ui/intrinsics/panic-uninitialized-zeroed.rs b/src/test/ui/intrinsics/panic-uninitialized-zeroed.rs
index 255151a96032c..4aa869cca35be 100644
--- a/src/test/ui/intrinsics/panic-uninitialized-zeroed.rs
+++ b/src/test/ui/intrinsics/panic-uninitialized-zeroed.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 // revisions: mir thir strict
 // [thir]compile-flags: -Zthir-unsafeck
 // [strict]compile-flags: -Zstrict-init-checks
diff --git a/src/test/ui/issues/issue-14875.rs b/src/test/ui/issues/issue-14875.rs
index aaef2aab9fc76..fca3309155d54 100644
--- a/src/test/ui/issues/issue-14875.rs
+++ b/src/test/ui/issues/issue-14875.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 
 // Check that values are not leaked when a dtor panics (#14875)
 
diff --git a/src/test/ui/issues/issue-29948.rs b/src/test/ui/issues/issue-29948.rs
index 01c3ec64861fe..3ed701480b5ed 100644
--- a/src/test/ui/issues/issue-29948.rs
+++ b/src/test/ui/issues/issue-29948.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 
 use std::panic;
 
diff --git a/src/test/ui/issues/issue-43853.rs b/src/test/ui/issues/issue-43853.rs
index 3162c091c8786..dd42c1e3cb831 100644
--- a/src/test/ui/issues/issue-43853.rs
+++ b/src/test/ui/issues/issue-43853.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 
 use std::panic;
 
diff --git a/src/test/ui/issues/issue-46519.rs b/src/test/ui/issues/issue-46519.rs
index 9bd3c0948517b..0567923b7fc69 100644
--- a/src/test/ui/issues/issue-46519.rs
+++ b/src/test/ui/issues/issue-46519.rs
@@ -2,7 +2,6 @@
 // compile-flags:--test -O
 
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #[test]
 #[should_panic(expected = "creating inhabited type")]
diff --git a/src/test/ui/iterators/iter-count-overflow-debug.rs b/src/test/ui/iterators/iter-count-overflow-debug.rs
index 15f25f1ca5373..8e59c11e9dccb 100644
--- a/src/test/ui/iterators/iter-count-overflow-debug.rs
+++ b/src/test/ui/iterators/iter-count-overflow-debug.rs
@@ -1,7 +1,6 @@
 // run-pass
 // only-32bit too impatient for 2⁶⁴ items
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 // compile-flags: -C debug_assertions=yes -C opt-level=3
 
 use std::panic;
diff --git a/src/test/ui/iterators/iter-position-overflow-debug.rs b/src/test/ui/iterators/iter-position-overflow-debug.rs
index 65124c282412c..7a871e744c984 100644
--- a/src/test/ui/iterators/iter-position-overflow-debug.rs
+++ b/src/test/ui/iterators/iter-position-overflow-debug.rs
@@ -1,7 +1,6 @@
 // run-pass
 // only-32bit too impatient for 2⁶⁴ items
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 // compile-flags: -C debug_assertions=yes -C opt-level=3
 
 use std::panic;
diff --git a/src/test/ui/iterators/iter-step-overflow-debug.rs b/src/test/ui/iterators/iter-step-overflow-debug.rs
index e16f984de79a6..6aa349ebed29b 100644
--- a/src/test/ui/iterators/iter-step-overflow-debug.rs
+++ b/src/test/ui/iterators/iter-step-overflow-debug.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 // compile-flags: -C debug_assertions=yes
 
 use std::panic;
diff --git a/src/test/ui/iterators/iter-sum-overflow-debug.rs b/src/test/ui/iterators/iter-sum-overflow-debug.rs
index d8ce43848a77e..24c764ff95873 100644
--- a/src/test/ui/iterators/iter-sum-overflow-debug.rs
+++ b/src/test/ui/iterators/iter-sum-overflow-debug.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 // compile-flags: -C debug_assertions=yes
 
 use std::panic;
diff --git a/src/test/ui/iterators/iter-sum-overflow-overflow-checks.rs b/src/test/ui/iterators/iter-sum-overflow-overflow-checks.rs
index bc8dcbdbb0e03..be45c075d7331 100644
--- a/src/test/ui/iterators/iter-sum-overflow-overflow-checks.rs
+++ b/src/test/ui/iterators/iter-sum-overflow-overflow-checks.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 // compile-flags: -C overflow-checks
 
 use std::panic;
diff --git a/src/test/ui/macros/macro-comma-behavior-rpass.rs b/src/test/ui/macros/macro-comma-behavior-rpass.rs
index dfd58b25d089d..8406b4e78f6be 100644
--- a/src/test/ui/macros/macro-comma-behavior-rpass.rs
+++ b/src/test/ui/macros/macro-comma-behavior-rpass.rs
@@ -14,7 +14,6 @@
 // compile-flags: --test -C debug_assertions=yes
 // revisions: std core
 
-// ignore-wasm32-bare compiled with panic=abort by default
 #![cfg_attr(core, no_std)]
 
 #[cfg(core)]
diff --git a/src/test/ui/mir/mir_calls_to_shims.rs b/src/test/ui/mir/mir_calls_to_shims.rs
index 42eaab77da9f1..9dc0acfbfda48 100644
--- a/src/test/ui/mir/mir_calls_to_shims.rs
+++ b/src/test/ui/mir/mir_calls_to_shims.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![feature(fn_traits)]
 #![feature(never_type)]
diff --git a/src/test/ui/mir/mir_codegen_calls_diverging_drops.rs b/src/test/ui/mir/mir_codegen_calls_diverging_drops.rs
index 3d215610593f3..19dba497001cc 100644
--- a/src/test/ui/mir/mir_codegen_calls_diverging_drops.rs
+++ b/src/test/ui/mir/mir_codegen_calls_diverging_drops.rs
@@ -1,7 +1,6 @@
 // run-fail
 // error-pattern:diverging_fn called
 // error-pattern:0 dropped
-// ignore-emscripten no processes
 // needs-unwind this test checks that a destructor is called after panicking
 
 struct Droppable(u8);
diff --git a/src/test/ui/mir/mir_drop_order.rs b/src/test/ui/mir/mir_drop_order.rs
index 853efb0fed2b9..75f5b171af352 100644
--- a/src/test/ui/mir/mir_drop_order.rs
+++ b/src/test/ui/mir/mir_drop_order.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 
 use std::cell::RefCell;
 use std::panic;
diff --git a/src/test/ui/mir/mir_drop_panics.rs b/src/test/ui/mir/mir_drop_panics.rs
index b4093d704150a..0d00426d6d2d5 100644
--- a/src/test/ui/mir/mir_drop_panics.rs
+++ b/src/test/ui/mir/mir_drop_panics.rs
@@ -2,7 +2,6 @@
 // needs-unwind
 // error-pattern:panic 1
 // error-pattern:drop 2
-// ignore-emscripten no processes
 
 struct Droppable(u32);
 impl Drop for Droppable {
diff --git a/src/test/ui/mir/mir_let_chains_drop_order.rs b/src/test/ui/mir/mir_let_chains_drop_order.rs
index 6498a51957194..536a84a352a49 100644
--- a/src/test/ui/mir/mir_let_chains_drop_order.rs
+++ b/src/test/ui/mir/mir_let_chains_drop_order.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 
 // See `mir_drop_order.rs` for more information
 
diff --git a/src/test/ui/numbers-arithmetic/next-power-of-two-overflow-debug.rs b/src/test/ui/numbers-arithmetic/next-power-of-two-overflow-debug.rs
index f857d4f4c7f27..79d78da3328a9 100644
--- a/src/test/ui/numbers-arithmetic/next-power-of-two-overflow-debug.rs
+++ b/src/test/ui/numbers-arithmetic/next-power-of-two-overflow-debug.rs
@@ -1,7 +1,6 @@
 // run-pass
 // compile-flags: -C debug_assertions=yes
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 // ignore-emscripten dies with an LLVM error
 
 use std::panic;
diff --git a/src/test/ui/panic-handler/weak-lang-item.rs b/src/test/ui/panic-handler/weak-lang-item.rs
index df31e614cf809..aef5e1b2c1c7a 100644
--- a/src/test/ui/panic-handler/weak-lang-item.rs
+++ b/src/test/ui/panic-handler/weak-lang-item.rs
@@ -2,7 +2,6 @@
 // error-pattern: `#[panic_handler]` function required, but not found
 // error-pattern: language item required, but not found: `eh_personality`
 // needs-unwind since it affects the error output
-// ignore-emscripten compiled with panic=abort, personality not required
 
 #![no_std]
 
diff --git a/src/test/ui/panic-runtime/need-abort-got-unwind.rs b/src/test/ui/panic-runtime/need-abort-got-unwind.rs
index c72fb96e357f0..e92400931d231 100644
--- a/src/test/ui/panic-runtime/need-abort-got-unwind.rs
+++ b/src/test/ui/panic-runtime/need-abort-got-unwind.rs
@@ -2,7 +2,6 @@
 // needs-unwind
 // error-pattern:is incompatible with this crate's strategy of `unwind`
 // aux-build:needs-abort.rs
-// ignore-wasm32-bare compiled with panic=abort by default
 
 extern crate needs_abort;
 
diff --git a/src/test/ui/panic-runtime/transitive-link-a-bunch.rs b/src/test/ui/panic-runtime/transitive-link-a-bunch.rs
index 622535a75aff6..0e74e300f00f0 100644
--- a/src/test/ui/panic-runtime/transitive-link-a-bunch.rs
+++ b/src/test/ui/panic-runtime/transitive-link-a-bunch.rs
@@ -6,7 +6,6 @@
 // aux-build:wants-panic-runtime-abort.rs
 // aux-build:panic-runtime-lang-items.rs
 // error-pattern: is not compiled with this crate's panic strategy `unwind`
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![no_std]
 #![no_main]
diff --git a/src/test/ui/panic-runtime/want-unwind-got-abort.rs b/src/test/ui/panic-runtime/want-unwind-got-abort.rs
index 23bfea6af15c1..b6174dc4efee8 100644
--- a/src/test/ui/panic-runtime/want-unwind-got-abort.rs
+++ b/src/test/ui/panic-runtime/want-unwind-got-abort.rs
@@ -3,7 +3,6 @@
 // error-pattern:is not compiled with this crate's panic strategy `unwind`
 // aux-build:panic-runtime-abort.rs
 // aux-build:panic-runtime-lang-items.rs
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![no_std]
 #![no_main]
diff --git a/src/test/ui/panic-runtime/want-unwind-got-abort2.rs b/src/test/ui/panic-runtime/want-unwind-got-abort2.rs
index 7a2e48e2f10a9..b54babbeffa32 100644
--- a/src/test/ui/panic-runtime/want-unwind-got-abort2.rs
+++ b/src/test/ui/panic-runtime/want-unwind-got-abort2.rs
@@ -4,7 +4,6 @@
 // aux-build:panic-runtime-abort.rs
 // aux-build:wants-panic-runtime-abort.rs
 // aux-build:panic-runtime-lang-items.rs
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![no_std]
 #![no_main]
diff --git a/src/test/ui/panic-while-printing.rs b/src/test/ui/panic-while-printing.rs
index 098f54ac23f6a..3abedf2a764e2 100644
--- a/src/test/ui/panic-while-printing.rs
+++ b/src/test/ui/panic-while-printing.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-emscripten no subprocess support
 
 #![feature(internal_output_capture)]
 
diff --git a/src/test/ui/privacy/reachable-unnameable-items.rs b/src/test/ui/privacy/reachable-unnameable-items.rs
index 1c91541e64229..1babe011996b0 100644
--- a/src/test/ui/privacy/reachable-unnameable-items.rs
+++ b/src/test/ui/privacy/reachable-unnameable-items.rs
@@ -1,5 +1,4 @@
 // run-pass
-// ignore-wasm32-bare compiled with panic=abort by default
 // needs-unwind
 // aux-build:reachable-unnameable-items.rs
 
diff --git a/src/test/ui/proc-macro/expand-with-a-macro.rs b/src/test/ui/proc-macro/expand-with-a-macro.rs
index 21a4547d11e1c..042a283659517 100644
--- a/src/test/ui/proc-macro/expand-with-a-macro.rs
+++ b/src/test/ui/proc-macro/expand-with-a-macro.rs
@@ -2,7 +2,6 @@
 // needs-unwind
 // aux-build:expand-with-a-macro.rs
 
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![deny(warnings)]
 
diff --git a/src/test/ui/rfc-1937-termination-trait/termination-trait-in-test.rs b/src/test/ui/rfc-1937-termination-trait/termination-trait-in-test.rs
index cd57d9bca9429..43888cecedab3 100644
--- a/src/test/ui/rfc-1937-termination-trait/termination-trait-in-test.rs
+++ b/src/test/ui/rfc-1937-termination-trait/termination-trait-in-test.rs
@@ -2,7 +2,6 @@
 // run-pass
 // needs-unwind
 
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![feature(test)]
 
diff --git a/src/test/ui/rfc-2091-track-caller/std-panic-locations.rs b/src/test/ui/rfc-2091-track-caller/std-panic-locations.rs
index b067994a5c6d8..f11456250d874 100644
--- a/src/test/ui/rfc-2091-track-caller/std-panic-locations.rs
+++ b/src/test/ui/rfc-2091-track-caller/std-panic-locations.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 // revisions: default mir-opt
 //[mir-opt] compile-flags: -Zmir-opt-level=4
 
diff --git a/src/test/ui/rfcs/rfc1857-drop-order.rs b/src/test/ui/rfcs/rfc1857-drop-order.rs
index 243b7fb6fadec..4c4816c2fbc8d 100644
--- a/src/test/ui/rfcs/rfc1857-drop-order.rs
+++ b/src/test/ui/rfcs/rfc1857-drop-order.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![allow(dead_code, unreachable_code)]
 
diff --git a/src/test/ui/runtime/rt-explody-panic-payloads.rs b/src/test/ui/runtime/rt-explody-panic-payloads.rs
index eb5bf8f67a849..e2221e5df8ea1 100644
--- a/src/test/ui/runtime/rt-explody-panic-payloads.rs
+++ b/src/test/ui/runtime/rt-explody-panic-payloads.rs
@@ -2,9 +2,6 @@
 // needs-unwind
 // ignore-emscripten no processes
 // ignore-sgx no processes
-// ignore-wasm32-bare no unwinding panic
-// ignore-avr no unwinding panic
-// ignore-nvptx64 no unwinding panic
 
 use std::env;
 use std::process::Command;
diff --git a/src/test/ui/test-attrs/test-panic-while-printing.rs b/src/test/ui/test-attrs/test-panic-while-printing.rs
index 01e460da5ab57..033c8beb475df 100644
--- a/src/test/ui/test-attrs/test-panic-while-printing.rs
+++ b/src/test/ui/test-attrs/test-panic-while-printing.rs
@@ -1,7 +1,6 @@
 // compile-flags:--test
 // run-pass
 // needs-unwind
-// ignore-emscripten no subprocess support
 
 use std::fmt;
 use std::fmt::{Display, Formatter};
diff --git a/src/test/ui/test-attrs/test-should-fail-good-message.rs b/src/test/ui/test-attrs/test-should-fail-good-message.rs
index 3260b6938f07d..83519c4524a62 100644
--- a/src/test/ui/test-attrs/test-should-fail-good-message.rs
+++ b/src/test/ui/test-attrs/test-should-fail-good-message.rs
@@ -1,6 +1,5 @@
 // run-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 // compile-flags: --test
 #[test]
 #[should_panic(expected = "foo")]
diff --git a/src/test/ui/unwind-abis/ffi-unwind-calls-lint.rs b/src/test/ui/unwind-abis/ffi-unwind-calls-lint.rs
index dadf4b1218784..9a324f00435c7 100644
--- a/src/test/ui/unwind-abis/ffi-unwind-calls-lint.rs
+++ b/src/test/ui/unwind-abis/ffi-unwind-calls-lint.rs
@@ -1,6 +1,5 @@
 // build-pass
 // needs-unwind
-// ignore-wasm32-bare compiled with panic=abort by default
 
 #![feature(c_unwind)]
 #![warn(ffi_unwind_calls)]
diff --git a/src/test/ui/unwind-no-uwtable.rs b/src/test/ui/unwind-no-uwtable.rs
index 0440cf488e8bb..3bc309233a7ac 100644
--- a/src/test/ui/unwind-no-uwtable.rs
+++ b/src/test/ui/unwind-no-uwtable.rs
@@ -1,7 +1,6 @@
 // run-pass
 // needs-unwind
 // ignore-windows target requires uwtable
-// ignore-wasm32-bare no proper panic=unwind support
 // compile-flags: -C panic=unwind -C force-unwind-tables=n
 
 use std::panic::{self, AssertUnwindSafe};

From 10f3657936e3aec6671b8135ec34e8ba69d12899 Mon Sep 17 00:00:00 2001
From: Florian Bartels <Florian.Bartels@elektrobit.com>
Date: Thu, 22 Sep 2022 15:18:17 +0200
Subject: [PATCH 3/5] Adapt test results

---
 .../migrations/mir_calls_to_shims.fixed                     | 1 -
 .../migrations/mir_calls_to_shims.stderr                    | 2 +-
 src/test/ui/panic-handler/weak-lang-item.stderr             | 2 +-
 src/test/ui/unwind-abis/ffi-unwind-calls-lint.stderr        | 6 +++---
 4 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/src/test/ui/closures/2229_closure_analysis/migrations/mir_calls_to_shims.fixed b/src/test/ui/closures/2229_closure_analysis/migrations/mir_calls_to_shims.fixed
index 89f3931418dac..ff2244a8e31b9 100644
--- a/src/test/ui/closures/2229_closure_analysis/migrations/mir_calls_to_shims.fixed
+++ b/src/test/ui/closures/2229_closure_analysis/migrations/mir_calls_to_shims.fixed
@@ -3,7 +3,6 @@
 
 #![deny(rust_2021_incompatible_closure_captures)]
 //~^ NOTE: the lint level is defined here
-// ignore-wasm32-bare compiled with panic=abort by default
 #![feature(fn_traits)]
 #![feature(never_type)]
 
diff --git a/src/test/ui/closures/2229_closure_analysis/migrations/mir_calls_to_shims.stderr b/src/test/ui/closures/2229_closure_analysis/migrations/mir_calls_to_shims.stderr
index 2648b00435b31..62cfcbe95bc2c 100644
--- a/src/test/ui/closures/2229_closure_analysis/migrations/mir_calls_to_shims.stderr
+++ b/src/test/ui/closures/2229_closure_analysis/migrations/mir_calls_to_shims.stderr
@@ -1,5 +1,5 @@
 error: changes to closure capture in Rust 2021 will affect which traits the closure implements
-  --> $DIR/mir_calls_to_shims.rs:21:38
+  --> $DIR/mir_calls_to_shims.rs:20:38
    |
 LL |     let result = panic::catch_unwind(move || {
    |                                      ^^^^^^^
diff --git a/src/test/ui/panic-handler/weak-lang-item.stderr b/src/test/ui/panic-handler/weak-lang-item.stderr
index 202f3309d035e..3bce1e26fe276 100644
--- a/src/test/ui/panic-handler/weak-lang-item.stderr
+++ b/src/test/ui/panic-handler/weak-lang-item.stderr
@@ -1,5 +1,5 @@
 error[E0259]: the name `core` is defined multiple times
-  --> $DIR/weak-lang-item.rs:9:1
+  --> $DIR/weak-lang-item.rs:8:1
    |
 LL | extern crate core;
    | ^^^^^^^^^^^^^^^^^^ `core` reimported here
diff --git a/src/test/ui/unwind-abis/ffi-unwind-calls-lint.stderr b/src/test/ui/unwind-abis/ffi-unwind-calls-lint.stderr
index ed41cb74623cb..937a2b3dff8b6 100644
--- a/src/test/ui/unwind-abis/ffi-unwind-calls-lint.stderr
+++ b/src/test/ui/unwind-abis/ffi-unwind-calls-lint.stderr
@@ -1,17 +1,17 @@
 warning: call to foreign function with FFI-unwind ABI
-  --> $DIR/ffi-unwind-calls-lint.rs:21:14
+  --> $DIR/ffi-unwind-calls-lint.rs:20:14
    |
 LL |     unsafe { foo(); }
    |              ^^^^^ call to foreign function with FFI-unwind ABI
    |
 note: the lint level is defined here
-  --> $DIR/ffi-unwind-calls-lint.rs:6:9
+  --> $DIR/ffi-unwind-calls-lint.rs:5:9
    |
 LL | #![warn(ffi_unwind_calls)]
    |         ^^^^^^^^^^^^^^^^
 
 warning: call to function pointer with FFI-unwind ABI
-  --> $DIR/ffi-unwind-calls-lint.rs:25:5
+  --> $DIR/ffi-unwind-calls-lint.rs:24:5
    |
 LL |     ptr();
    |     ^^^^^ call to function pointer with FFI-unwind ABI

From 0be3cc82345b22c898fb46a93e69fa7b1f6c710f Mon Sep 17 00:00:00 2001
From: Florian Bartels <Florian.Bartels@elektrobit.com>
Date: Fri, 23 Sep 2022 09:41:12 +0200
Subject: [PATCH 4/5] ignore test cases when checking emscripten

---
 src/test/ui/extern-flag/empty-extern-arg.rs | 1 +
 src/test/ui/panic-handler/weak-lang-item.rs | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/test/ui/extern-flag/empty-extern-arg.rs b/src/test/ui/extern-flag/empty-extern-arg.rs
index a371afb128cab..2f4ae7d8e70fa 100644
--- a/src/test/ui/extern-flag/empty-extern-arg.rs
+++ b/src/test/ui/extern-flag/empty-extern-arg.rs
@@ -1,5 +1,6 @@
 // compile-flags: --extern std=
 // error-pattern: extern location for std does not exist
 // needs-unwind since it affects the error output
+// ignore-emscripten missing eh_catch_typeinfo lang item
 
 fn main() {}
diff --git a/src/test/ui/panic-handler/weak-lang-item.rs b/src/test/ui/panic-handler/weak-lang-item.rs
index aef5e1b2c1c7a..14a07a9ef1b55 100644
--- a/src/test/ui/panic-handler/weak-lang-item.rs
+++ b/src/test/ui/panic-handler/weak-lang-item.rs
@@ -2,6 +2,7 @@
 // error-pattern: `#[panic_handler]` function required, but not found
 // error-pattern: language item required, but not found: `eh_personality`
 // needs-unwind since it affects the error output
+// ignore-emscripten missing eh_catch_typeinfo lang item
 
 #![no_std]
 

From ccd19c7e9ede1cdb6606045bbab19d452ca39929 Mon Sep 17 00:00:00 2001
From: Florian Bartels <Florian.Bartels@elektrobit.com>
Date: Fri, 23 Sep 2022 10:10:07 +0200
Subject: [PATCH 5/5] Repair stderr test result to added line

---
 src/test/ui/panic-handler/weak-lang-item.stderr | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/test/ui/panic-handler/weak-lang-item.stderr b/src/test/ui/panic-handler/weak-lang-item.stderr
index 3bce1e26fe276..202f3309d035e 100644
--- a/src/test/ui/panic-handler/weak-lang-item.stderr
+++ b/src/test/ui/panic-handler/weak-lang-item.stderr
@@ -1,5 +1,5 @@
 error[E0259]: the name `core` is defined multiple times
-  --> $DIR/weak-lang-item.rs:8:1
+  --> $DIR/weak-lang-item.rs:9:1
    |
 LL | extern crate core;
    | ^^^^^^^^^^^^^^^^^^ `core` reimported here