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[lldb] Default LLDB_ENABLE_MTE to OFF when Sanitizers are enabled. (#186884)

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The MTE launcher complicates injecting the sanitizer runtime libraries.
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Jonas Devlieghere 2026-03-16 14:22:55 -07:00 committed by GitHub
parent 013f2542a2
commit 9da068b7cf
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1 changed files with 13 additions and 9 deletions
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22
lldb/cmake/modules/LLDBConfig.cmake
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@ -166,15 +166,19 @@ endif()
if (APPLE)
set(default_enable_mte OFF)
execute_process(
COMMAND sysctl -n hw.optional.arm.FEAT_MTE4
OUTPUT_VARIABLE SYSCTL_OUTPUT
ERROR_QUIET
RESULT_VARIABLE SYSCTL_RESULT
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(SYSCTL_RESULT EQUAL 0 AND SYSCTL_OUTPUT STREQUAL "1")
set(default_enable_mte ON)
# The MTE launcher complicates injecting the sanitizer runtime libraries.
# Default to OFF when any sanitizer is enabled.
if (NOT LLVM_USE_SANITIZER)
execute_process(
COMMAND sysctl -n hw.optional.arm.FEAT_MTE4
OUTPUT_VARIABLE SYSCTL_OUTPUT
ERROR_QUIET
RESULT_VARIABLE SYSCTL_RESULT
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(SYSCTL_RESULT EQUAL 0 AND SYSCTL_OUTPUT STREQUAL "1")
set(default_enable_mte ON)
endif()
endif()
option(LLDB_ENABLE_MTE "Run the LLDB test suite with MTE enabled." ${default_enable_mte})