Fix warnings from BoringSSL on Rust 1.70

openssl-sys/build/run_bindgen.rs

@@ -110,11 +110,15 @@ pub fn run_boringssl(include_dirs: &[PathBuf]) {
     let mut builder = bindgen::builder()
         .rust_target(RustTarget::Stable_1_47)
         .ctypes_prefix("::libc")
+        .raw_line("use libc::*;")
         .derive_default(false)
         .enable_function_attribute_detection()
         .default_macro_constant_type(MacroTypeVariation::Signed)
         .rustified_enum("point_conversion_form_t")
         .allowlist_file(".*/openssl/[^/]+\\.h")
+        .allowlist_recursively(false)
+        .blocklist_function("BIO_vsnprintf")
+        .blocklist_function("OPENSSL_vasprintf")
         .wrap_static_fns(true)
         .wrap_static_fns_path(out_dir.join("boring_static_wrapper").display().to_string())
         .layout_tests(false)
@@ -165,11 +169,15 @@ pub fn run_boringssl(include_dirs: &[PathBuf]) {
         .arg(out_dir.join("bindgen.rs"))
         .arg("--rust-target=1.47")
         .arg("--ctypes-prefix=::libc")
+        .arg("--raw-line=use libc::*;")
         .arg("--no-derive-default")
         .arg("--enable-function-attribute-detection")
         .arg("--default-macro-constant-type=signed")
         .arg("--rustified-enum=point_conversion_form_t")
         .arg("--allowlist-file=.*/openssl/[^/]+\\.h")
+        .arg("--no-recursive-allowlist")
+        .arg("--blocklist-function=BIO_vsnprintf")
+        .arg("--blocklist-function=OPENSSL_vasprintf")
         .arg("--experimental")
         .arg("--wrap-static-fns")
         .arg("--wrap-static-fns-path")

openssl-sys/src/lib.rs

@@ -10,6 +10,8 @@
     overflowing_literals,
     unused_imports
 )]
+#![cfg_attr(feature = "unstable_boringssl", allow(ambiguous_glob_reexports))]
+
 #![doc(html_root_url = "https://docs.rs/openssl-sys/0.9")]
 #![recursion_limit = "128"] // configure fixed limit across all rust versions