| Issue |
138437
|
| Summary |
Backport 801b519dfd01 ("[sanitizer_common] Fix build on ppc64+musl (#120036)") to LLVM 20
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
ziyao233
|
As described in the original commit, not only ppc64 but also riscv64 and mips platforms were affected by the missing guard, causing errors like,
```
[1/10] Building CXX object lib/sanitiz...cv64.dir/sanitizer_linux_libcdep.cpp.o
FAILED: lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.riscv64.dir/sanitizer_linux_libcdep.cpp.o
/usr/sbin/riscv64-unknown-linux-musl-clang++ --target=riscv64-unknown-linux-musl -DHAVE_RPC_XDR_H=0 -D__func__=__FUNCTION__ -I/root/Source/llvm-project/compiler-rt/lib/sanitizer_common/.. -std=c++17 -O3 -MD -MT lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.riscv64.dir/sanitizer_linux_libcdep.cpp.o -MF lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.riscv64.dir/sanitizer_linux_libcdep.cpp.o.d -o lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.riscv64.dir/sanitizer_linux_libcdep.cpp.o -c /root/Source/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
/root/Source/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp:627:29: error: use of undeclared identifier 'TlsPreTcbSize'
627 | const uptr pre_tcb_size = TlsPreTcbSize();
| ^
1 error generated.
[2/10] Building CXX object lib/sanitiz...cv64.dir/sanitizer_linux_libcdep.cpp.o
```
when building compiler-rt for riscv64-unknown-linux-musl platforms.
I've tested the referred patch does fix the problem and could be applied cleanly to branch release/20.x.
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