windows-gnu tests

Author: jyn514

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -783,11 +783,13 @@ fn report_linker_output(sess: &Session, levels: CodegenLintLevels, stdout: &[u8]
 
     if !escaped_stderr.is_empty() {
         // We already print `warning:` at the start of the diagnostic. Remove it from the linker output if present.
-        let stderr = escaped_stderr
-            .strip_prefix("warning: ")
+        escaped_stderr =
+            escaped_stderr.strip_prefix("warning: ").unwrap_or(&escaped_stderr).to_owned();
+        escaped_stderr = escaped_stderr
+            .strip_prefix("Warning: ")
             .unwrap_or(&escaped_stderr)
             .replace(": warning: ", ": ");
-        lint_msg(format!("linker stderr: {stderr}"));
+        lint_msg(format!("linker stderr: {escaped_stderr}"));
     }
     if !escaped_stdout.is_empty() {
         lint_msg(format!("linker stdout: {}", escaped_stdout))

tests/ui/linking/windows-gnu-corrupt-drective.rs

@@ -0,0 +1,5 @@
+//@ only-windows-gnu
+//@ build-fail
+#![deny(linker_info)]
+//~? ERROR Warning: .drectve
+fn main() {}

tests/ui/linking/windows-gnu-corrupt-drective.stderr

@@ -0,0 +1,12 @@
+error: Warning: .drectve `-exclude-symbols:_ZN28windows_gnu_corrupt_drective4main17h291ed884c1aada69E ' unrecognized
+       Warning: corrupt .drectve at end of def file
+       
+   |
+note: the lint level is defined here
+  --> $DIR/windows-gnu-corrupt-drective.rs:3:9
+   |
+LL | #![deny(linker_info)]
+   |         ^^^^^^^^^^^
+
+error: aborting due to 1 previous error
+