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[cross-project-tests] Unset _FORTIFY_SOURCE when building the LLDB formatter tests (#174770)

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When building `cross-project-tests` with `_FORTIFY_SOURCE` set, we get
following warnings:
```
In file included from /app/gcc/14.2.0/include/c++/14.2.0/x86_64-pc-linux-gnu/bits/os_defines.h:39,
                 from /app/gcc/14.2.0/include/c++/14.2.0/x86_64-pc-linux-gnu/bits/c++config.h:680,
                 from /app/gcc/14.2.0/include/c++/14.2.0/type_traits:38,
                 from ../include/llvm/ADT/ADL.h:12,
                 from ../include/llvm/ADT/Hashing.h:47,
                 from ../include/llvm/ADT/ArrayRef.h:12,
                 from ../../cross-project-tests/debuginfo-tests/llvm-prettyprinters/lldb/arrayref.cpp:1:
/usr/include/features.h:381:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
  381 | #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
      |    ^~~~~~~
```

This patch works around this by undefining the macro when compiling the
LLDB formatter tests.

If this ever becomes an issue we could try to detect `_FORTIFY_SOURCE`
and skip the tests if set.
This commit is contained in:
Michael Buch 2026-01-07 16:11:04 +00:00 committed by GitHub
parent 13551112a7
commit 7584db7820
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1 changed files with 2 additions and 1 deletions
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3
cross-project-tests/debuginfo-tests/llvm-prettyprinters/lldb/CMakeLists.txt
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@ -1,4 +1,5 @@
set(LLDB_TEST_DEBUG_COMPILE_OPTIONS -g -O0)
# Unset _FORTIFY_SOURCE since it's incompatible with -O0.
set(LLDB_TEST_DEBUG_COMPILE_OPTIONS -g -O0 -U_FORTIFY_SOURCE)
add_executable(check-lldb-llvm-support-arrayref arrayref.cpp)
target_link_libraries(check-lldb-llvm-support-arrayref PRIVATE LLVMSupport)