invalid stdout_utf8 handling in run_make_support

Author: Oneirical

Diff for: src/tools/run-make-support/src/command.rs

@@ -167,6 +167,12 @@ impl CompletedProcess {
         String::from_utf8(self.output.stdout.clone()).expect("stdout is not valid UTF-8")
     }
 
+    #[must_use]
+    #[track_caller]
+    pub fn invalid_stdout_utf8(&self) -> String {
+        String::from_utf8_lossy(&self.output.stdout.clone()).to_string()
+    }
+
     #[must_use]
     #[track_caller]
     pub fn stderr_utf8(&self) -> String {

Diff for: tests/run-make/symbol-visibility/rmake.rs

@@ -142,7 +142,7 @@ fn main() {
 
 #[track_caller]
 fn symbols_check(path: &str, symbol_check_type: SymbolCheckType, exists_once: bool) {
-    let out = llvm_readobj().arg("--dyn-symbols").input(path).run().stdout_utf8();
+    let out = llvm_readobj().arg("--dyn-symbols").input(path).run().invalid_stdout_utf8();
     assert_eq!(
         out.lines()
             .filter(|&line| !line.contains("__imp_") && has_symbol(line, symbol_check_type))