[all-commits] [llvm/llvm-project] f322f4: [sanitizer_common] Provide dummy ThreadDescriptorS...

[Rainer Orth via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f322f4a55e8a60b996a0a9f0b3fe924c7af2cb1b
      https://github.com/llvm/llvm-project/commit/f322f4a55e8a60b996a0a9f0b3fe924c7af2cb1b
  Author: Rainer Orth <ro at gcc.gnu.org>
  Date:   2024-09-20 (Fri, 20 Sep 2024)

  Changed paths:
    M compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp

  Log Message:
  -----------
  [sanitizer_common] Provide dummy ThreadDescriptorSize on Solaris (#109285)

Since 2c69a09bee94acca859a1adf5b04d01dc13f7295, the Solaris build is
broken like
```
Undefined			first referenced
 symbol  			    in file
_ZN11__sanitizer20ThreadDescriptorSizeEv projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.i386.dir/sanitizer_linux_libcdep.cpp.o
```
The `ThreadDescriptorSize` reference is from
`sanitizer_linux_libcdep.cpp` (`GetTls`), l.590. This isn't actually
needed on non-glibc targets AFAICS, so this patch provides a dummy to
restore the build.

Tested on `sparcv9-sun-solaris2.11`, `amd64-pc-solaris2.11`, and
`x86_64-pc-linux-gnu`.



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