Fix assertions in coverage-reports test

Update some `C-unwind` bits and then

src/test/run-make-fulldeps/coverage-reports/expected_show_coverage.abort.txt

@@ -1,70 +1,69 @@
-    1|       |#![feature(unwind_attributes)]
+    1|       |#![feature(c_unwind)]
     2|       |#![allow(unused_assignments)]
     3|       |
-    4|       |#[unwind(aborts)]
-    5|     12|fn might_abort(should_abort: bool) {
-    6|     12|    if should_abort {
-    7|      0|        println!("aborting...");
-    8|      0|        panic!("panics and aborts");
-    9|     12|    } else {
-   10|     12|        println!("Don't Panic");
-   11|     12|    }
-   12|     12|}
-   13|       |
-   14|      1|fn main() -> Result<(), u8> {
-   15|      1|    let mut countdown = 10;
-   16|     11|    while countdown > 0 {
-   17|     10|        if countdown < 5 {
-   18|      4|            might_abort(false);
-   19|      6|        }
-   20|       |        // See discussion (below the `Notes` section) on coverage results for the closing brace.
-   21|     10|        if countdown < 5 { might_abort(false); } // Counts for different regions on one line.
+    4|     12|extern "C" fn might_abort(should_abort: bool) {
+    5|     12|    if should_abort {
+    6|      0|        println!("aborting...");
+    7|      0|        panic!("panics and aborts");
+    8|     12|    } else {
+    9|     12|        println!("Don't Panic");
+   10|     12|    }
+   11|     12|}
+   12|       |
+   13|      1|fn main() -> Result<(), u8> {
+   14|      1|    let mut countdown = 10;
+   15|     11|    while countdown > 0 {
+   16|     10|        if countdown < 5 {
+   17|      4|            might_abort(false);
+   18|      6|        }
+   19|       |        // See discussion (below the `Notes` section) on coverage results for the closing brace.
+   20|     10|        if countdown < 5 { might_abort(false); } // Counts for different regions on one line.
                                        ^4                     ^6
-   22|       |        // For the following example, the closing brace is the last character on the line.
-   23|       |        // This shows the character after the closing brace is highlighted, even if that next
-   24|       |        // character is a newline.
-   25|     10|        if countdown < 5 { might_abort(false); }
+   21|       |        // For the following example, the closing brace is the last character on the line.
+   22|       |        // This shows the character after the closing brace is highlighted, even if that next
+   23|       |        // character is a newline.
+   24|     10|        if countdown < 5 { might_abort(false); }
                                        ^4                     ^6
-   26|     10|        countdown -= 1;
-   27|       |    }
-   28|      1|    Ok(())
-   29|      1|}
-   30|       |
-   31|       |// Notes:
-   32|       |//   1. Compare this program and its coverage results to those of the similar tests
-   33|       |//      `panic_unwind.rs` and `try_error_result.rs`.
-   34|       |//   2. This test confirms the coverage generated when a program includes `TerminatorKind::Abort`.
-   35|       |//   3. The test does not invoke the abort. By executing to a successful completion, the coverage
-   36|       |//      results show where the program did and did not execute.
-   37|       |//   4. If the program actually aborted, the coverage counters would not be saved (which "works as
-   38|       |//      intended"). Coverage results would show no executed coverage regions.
-   39|       |//   6. If `should_abort` is `true` and the program aborts, the program exits with a `132` status
-   40|       |//      (on Linux at least).
-   41|       |
-   42|       |/*
-   43|       |
-   44|       |Expect the following coverage results:
-   45|       |
-   46|       |```text
-   47|       |    16|     11|    while countdown > 0 {
-   48|       |    17|     10|        if countdown < 5 {
-   49|       |    18|      4|            might_abort(false);
-   50|       |    19|      6|        }
-   51|       |```
-   52|       |
-   53|       |This is actually correct.
-   54|       |
-   55|       |The condition `countdown < 5` executed 10 times (10 loop iterations).
-   56|       |
-   57|       |It evaluated to `true` 4 times, and executed the `might_abort()` call.
-   58|       |
-   59|       |It skipped the body of the `might_abort()` call 6 times. If an `if` does not include an explicit
-   60|       |`else`, the coverage implementation injects a counter, at the character immediately after the `if`s
-   61|       |closing brace, to count the "implicit" `else`. This is the only way to capture the coverage of the
-   62|       |non-true condition.
-   63|       |
-   64|       |As another example of why this is important, say the condition was `countdown < 50`, which is always
-   65|       |`true`. In that case, we wouldn't have a test for what happens if `might_abort()` is not called.
-   66|       |The closing brace would have a count of `0`, highlighting the missed coverage.
-   67|       |*/
+   25|     10|        countdown -= 1;
+   26|       |    }
+   27|      1|    Ok(())
+   28|      1|}
+   29|       |
+   30|       |// Notes:
+   31|       |//   1. Compare this program and its coverage results to those of the similar tests
+   32|       |//      `panic_unwind.rs` and `try_error_result.rs`.
+   33|       |//   2. This test confirms the coverage generated when a program includes `TerminatorKind::Abort`.
+   34|       |//   3. The test does not invoke the abort. By executing to a successful completion, the coverage
+   35|       |//      results show where the program did and did not execute.
+   36|       |//   4. If the program actually aborted, the coverage counters would not be saved (which "works as
+   37|       |//      intended"). Coverage results would show no executed coverage regions.
+   38|       |//   6. If `should_abort` is `true` and the program aborts, the program exits with a `132` status
+   39|       |//      (on Linux at least).
+   40|       |
+   41|       |/*
+   42|       |
+   43|       |Expect the following coverage results:
+   44|       |
+   45|       |```text
+   46|       |    16|     11|    while countdown > 0 {
+   47|       |    17|     10|        if countdown < 5 {
+   48|       |    18|      4|            might_abort(false);
+   49|       |    19|      6|        }
+   50|       |```
+   51|       |
+   52|       |This is actually correct.
+   53|       |
+   54|       |The condition `countdown < 5` executed 10 times (10 loop iterations).
+   55|       |
+   56|       |It evaluated to `true` 4 times, and executed the `might_abort()` call.
+   57|       |
+   58|       |It skipped the body of the `might_abort()` call 6 times. If an `if` does not include an explicit
+   59|       |`else`, the coverage implementation injects a counter, at the character immediately after the `if`s
+   60|       |closing brace, to count the "implicit" `else`. This is the only way to capture the coverage of the
+   61|       |non-true condition.
+   62|       |
+   63|       |As another example of why this is important, say the condition was `countdown < 50`, which is always
+   64|       |`true`. In that case, we wouldn't have a test for what happens if `might_abort()` is not called.
+   65|       |The closing brace would have a count of `0`, highlighting the missed coverage.
+   66|       |*/
 

src/test/run-make-fulldeps/coverage-reports/expected_show_coverage.generics.txt

@@ -29,12 +29,12 @@
    18|      2|        println!("BOOM times {}!!!", self.strength);
    19|      2|    }
   ------------------
-  | <generics::Firework<i32> as core::ops::drop::Drop>::drop:
+  | <generics::Firework<f64> as core::ops::drop::Drop>::drop:
   |   17|      1|    fn drop(&mut self) {
   |   18|      1|        println!("BOOM times {}!!!", self.strength);
   |   19|      1|    }
   ------------------
-  | <generics::Firework<f64> as core::ops::drop::Drop>::drop:
+  | <generics::Firework<i32> as core::ops::drop::Drop>::drop:
   |   17|      1|    fn drop(&mut self) {
   |   18|      1|        println!("BOOM times {}!!!", self.strength);
   |   19|      1|    }

src/test/run-make-fulldeps/coverage-reports/expected_show_coverage.uses_crate.txt

@@ -19,12 +19,12 @@
    18|      2|    println!("used_only_from_bin_crate_generic_function with {:?}", arg);
    19|      2|}
   ------------------
-  | used_crate::used_only_from_bin_crate_generic_function::<&str>:
+  | used_crate::used_only_from_bin_crate_generic_function::<&alloc::vec::Vec<i32>>:
   |   17|      1|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
   |   18|      1|    println!("used_only_from_bin_crate_generic_function with {:?}", arg);
   |   19|      1|}
   ------------------
-  | used_crate::used_only_from_bin_crate_generic_function::<&alloc::vec::Vec<i32>>:
+  | used_crate::used_only_from_bin_crate_generic_function::<&str>:
   |   17|      1|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
   |   18|      1|    println!("used_only_from_bin_crate_generic_function with {:?}", arg);
   |   19|      1|}

src/test/run-make-fulldeps/coverage/abort.rs

@@ -17,16 +17,11 @@ fn main() -> Result<(), u8> {
             might_abort(false);
         }
         // See discussion (below the `Notes` section) on coverage results for the closing brace.
-        if countdown < 5 {
-            might_abort(false);
-        }
-        // Counts for different regions on one line.
+        if countdown < 5 { might_abort(false); } // Counts for different regions on one line.
         // For the following example, the closing brace is the last character on the line.
         // This shows the character after the closing brace is highlighted, even if that next
         // character is a newline.
-        if countdown < 5 {
-            might_abort(false);
-        }
+        if countdown < 5 { might_abort(false); }
         countdown -= 1;
     }
     Ok(())