[edk2-devel] [PATCH 3/3] Basetools: turn off gcc12 warning
Rebecca Cran
rebecca at bsdio.com
Mon Mar 28 21:29:53 UTC 2022
This breaks building BaseTools with clang 13.1.6 on macOS:
/Applications/Xcode.app/Contents/Developer/usr/bin/make -C DevicePath
gcc -c -I .. -I ../Include/Common -I ../Include/ -I
../Include/IndustryStandard -I ../Common/ -I .. -I . -I
../Include/AArch64/ -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror
-Wno-deprecated-declarations -Wno-self-assign -Wno-unused-result
-nostdlib -g -O2 -Wno-error=stringop-overflow DevicePath.c -o DevicePath.o
error: unknown warning option '-Werror=stringop-overflow'; did you mean
'-Werror=shift-overflow'? [-Werror,-Wunknown-warning-option]
--
Rebecca Cran
On 3/24/22 6:04 AM, Gerd Hoffmann wrote:
> In function ‘SetDevicePathEndNode’,
> inlined from ‘FileDevicePath’ at DevicePathUtilities.c:857:5:
> DevicePathUtilities.c:321:3: error: writing 4 bytes into a region of size 1 [-Werror=stringop-overflow=]
> 321 | memcpy (Node, &mUefiDevicePathLibEndDevicePath, sizeof (mUefiDevicePathLibEndDevicePath));
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> In file included from UefiDevicePathLib.h:22,
> from DevicePathUtilities.c:16:
> ../Include/Protocol/DevicePath.h: In function ‘FileDevicePath’:
> ../Include/Protocol/DevicePath.h:51:9: note: destination object ‘Type’ of size 1
> 51 | UINT8 Type; ///< 0x01 Hardware Device Path.
> | ^~~~
>
> Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
> ---
> BaseTools/Source/C/DevicePath/GNUmakefile | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/BaseTools/Source/C/DevicePath/GNUmakefile b/BaseTools/Source/C/DevicePath/GNUmakefile
> index 7ca08af9662d..b05d2bddfa68 100644
> --- a/BaseTools/Source/C/DevicePath/GNUmakefile
> +++ b/BaseTools/Source/C/DevicePath/GNUmakefile
> @@ -13,6 +13,9 @@ OBJECTS = DevicePath.o UefiDevicePathLib.o DevicePathFromText.o DevicePathUtili
>
> include $(MAKEROOT)/Makefiles/app.makefile
>
> +# gcc 12 trips over device path handling
> +BUILD_CFLAGS += -Wno-error=stringop-overflow
> +
> LIBS = -lCommon
> ifeq ($(CYGWIN), CYGWIN)
> LIBS += -L/lib/e2fsprogs -luuid
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