Exceptions don't work when used with -fvisibility=hidden

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Bugzilla Link	PR52579
Status	NEW
Importance	P normal
Reported by	Daniel Schopf (schopf.dan@gmail.com)
Reported on	2021-11-22 07:24:31 -0800
Last modified on	2021-11-24 07:14:48 -0800
Version	13.0
Hardware	PC Linux
CC	llvm-bugs@lists.llvm.org, mclow.lists@gmail.com, nok.raven@gmail.com
Fixed by commit(s)
Attachments	exception.cpp (333 bytes, text/x-c++src) exception.h (274 bytes, text/x-chdr) test.cpp (223 bytes, text/x-c++src)
Blocks
Blocked by
See also	PR39191

Created attachment 25466
exception source file

Using exceptions in shared libraries compiled with -fvisibility=hidden yields
the wrong results

Steps to Reproduce:

  1. Compile the attached files with the following commands:

    clang++ -shared -stdlib=libc++ -fvisibility=hidden exception.cpp -o libexception.so
    clang++ -stdlib=libc++ test.cpp libexception.so -o exception_test

  2. Run the exception_test binary

Actual Results:

  The output is "Error value = -2"

Expected Results:

  The output should be "Error value = 1"

This error cannot be reproduced when either removing the -fvisibility=hidden
switch or
when using -stdlib=libstdc++. So using -stdlib=libstdc++ together with -
fvisibility=hidden
produces the correct output.

Reproduced with clang-13 on Arch Linux.

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Attached exception.cpp (333 bytes, text/x-c++src): exception source file

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Attached exception.h (274 bytes, text/x-chdr): exception header file

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Attached test.cpp (223 bytes, text/x-c++src): test code