[llvm] Object: Don't error out on malformed bitcode files. (PR #96848)

[Fangrui Song via llvm-commits]

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@@ -9,37 +10,52 @@
 # RUN: llvm-as input.ll -o input.bc
 # RUN: cp input.bc good.bc
 # RUN: %python -c "with open('input.bc', 'a') as f: f.truncate(10)"
-# RUN: not llvm-ar rc bad.a input.bc 2>&1 | FileCheck %s --check-prefix=ERR1
+# RUN: llvm-ar rc bad.a input.bc 2>&1 | FileCheck %s --check-prefix=WARN1
+
+# llvm-nm will fail when it tries to read the malformed bitcode file, but
+# it's supposed to print the archive map first, which in this case it
+# won't because there won't be one.
+# RUN: not llvm-nm --print-armap bad.a | count 0
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MaskRay wrote:

`2>&1` and check the stderr as well?

https://github.com/llvm/llvm-project/pull/96848