[libcxx-commits] [clang] [libcxxabi] [clang][ItaniumMangle] Mangle friend function templates with a constr… (PR #110247)

[LLVM Continuous Integration via libcxx-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-sie-win` running on `sie-win-worker` while building `clang,libcxxabi` at step 7 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/46/builds/5723

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 7 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'Clang :: CodeGenCXX/mangle-concept.cpp' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 1
z:\b\llvm-clang-x86_64-sie-win\build\bin\clang.exe -cc1 -internal-isystem Z:\b\llvm-clang-x86_64-sie-win\build\lib\clang\20\include -nostdsysteminc -verify -std=c++20 -emit-llvm -triple x86_64-sie-ps5 -o - Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp -fclang-abi-compat=latest | z:\b\llvm-clang-x86_64-sie-win\build\bin\filecheck.exe Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp
# executed command: 'z:\b\llvm-clang-x86_64-sie-win\build\bin\clang.exe' -cc1 -internal-isystem 'Z:\b\llvm-clang-x86_64-sie-win\build\lib\clang\20\include' -nostdsysteminc -verify -std=c++20 -emit-llvm -triple x86_64-sie-ps5 -o - 'Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp' -fclang-abi-compat=latest
# .---command stderr------------
# | error: 'expected-error' diagnostics seen but not expected: 
# |   File Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp Line 39: redefinition of 'h'
# |   File Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp Line 38: default template argument not permitted on a friend template
# |   File Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp Line 45: redefinition of 'j'
# |   File Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp Line 44: default template argument not permitted on a friend template
# |   File Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp Line 51: redefinition of 'l'
# |   File Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp Line 50: default template argument not permitted on a friend template
# | error: 'expected-note' diagnostics seen but not expected: 
# |   File Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp Line 55: in instantiation of template class 'test2::A<bool>' requested here
# |   File Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp Line 39: previous definition is here
# |   File Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp Line 45: previous definition is here
# |   File Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp Line 51: previous definition is here
# | 10 errors generated.
# `-----------------------------
# error: command failed with exit status: 1
# executed command: 'z:\b\llvm-clang-x86_64-sie-win\build\bin\filecheck.exe' 'Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp'
# .---command stderr------------
# | FileCheck error: '<stdin>' is empty.
# | FileCheck command line:  z:\b\llvm-clang-x86_64-sie-win\build\bin\filecheck.exe Z:\b\llvm-clang-x86_64-sie-win\llvm-project\clang\test\CodeGenCXX\mangle-concept.cpp
# `-----------------------------
# error: command failed with exit status: 2

--

********************


```

</details>

https://github.com/llvm/llvm-project/pull/110247