BZ:https://bugzilla.tianocore.org/show_bug.cgi?id=1764
Some compiler flags restrict the compiler from making arbitrary decisions while handling undefined C/C++ behaviors. Therefore they can be used to fix some issues caused by undefined behavior. For example, for GCC, the following flags are available: -fno-strict-overflow tells the compiler NOT to assume that signed overflow does not occur. -fno-delete-null-pointer-checks tells the compiler NOT to assume that null pointer deference does not exist. -fwrapv tells the compiler that signed overflow always wraps. This patch is going to add these 3 build options to BaseTool GCC build option. Signed-off-by: Bob Feng <bob.c.f...@intel.com> Cc: Liming Gao <liming....@intel.com> --- BaseTools/Source/C/Makefiles/header.makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/BaseTools/Source/C/Makefiles/header.makefile b/BaseTools/Source/C/Makefiles/header.makefile index 90fb3453ad..f1aed62769 100644 --- a/BaseTools/Source/C/Makefiles/header.makefile +++ b/BaseTools/Source/C/Makefiles/header.makefile @@ -68,11 +68,11 @@ BUILD_OPTFLAGS = -O2 $(EXTRA_OPTFLAGS) ifeq ($(DARWIN),Darwin) # assume clang or clang compatible flags on OS X BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-deprecated-declarations -Wno-self-assign -Wno-unused-result -nostdlib -g else -BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-deprecated-declarations -Wno-stringop-truncation -Wno-restrict -Wno-unused-result -nostdlib -g +BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-deprecated-declarations -Wno-stringop-truncation -Wno-restrict -Wno-unused-result -nostdlib -g -fwrapv -fno-delete-null-pointer-checks -fno-strict-overflow endif BUILD_LFLAGS = BUILD_CXXFLAGS = -Wno-unused-result ifeq ($(HOST_ARCH), IA32) -- 2.20.1.windows.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#39749): https://edk2.groups.io/g/devel/message/39749 Mute This Topic: https://groups.io/mt/31381008/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
