From: Huang Rui Date: Tue, 10 Dec 2025 00:00:00 +0000 Subject: [PATCH] i#7493 GCC-15: Specify language dialect when checking type existence Existence of types may vary between language versions. For example, bool is turned into a builtin type in C23, but is defined in stdbool.h only in pre-C23 specifications. Let's specify the C dialect used by our main codebase, GNU C99, explicitly when checking for existence of types, to keep probed results aligned with configuration used for building. Issue: #7493 --- dynamorio/CMakeLists.txt | 3 +++ 1 file changed, 3 insertions(+) --- a/dynamorio/CMakeLists.txt +++ b/dynamorio/CMakeLists.txt @@ -742,6 +742,8 @@ if (UNIX) # and set DR_DO_NOT_DEFINE_* # Note that for later gcc uint and ushort seem to be "soft typedefs": # defined, but overridable: ?!? + set(CMAKE_ORIG_C_FLAGS "${CMAKE_C_FLAGS}") + set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99") include(CheckTypeSize) CHECK_TYPE_SIZE(uint DR_DO_NOT_DEFINE_uint) CHECK_TYPE_SIZE(ushort DR_DO_NOT_DEFINE_ushort) @@ -766,6 +768,7 @@ if (UNIX) message(FATAL_ERROR "incompatible \"_Bool\" type is larger than 1 byte") endif (NOT ${DR__Bool_EXISTS} EQUAL 1) endif (DR__Bool_EXISTS) + set(CMAKE_C_FLAGS "${CMAKE_ORIG_C_FLAGS}") endif (UNIX) ###########################################################################