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GCC/Clang: Treat void pointer arithmetic as error

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As an extension, GNU C treats sizeof(void) as 1. MSVC doesn't.
Make it an error on GCC/Clang to avoid accidental MSVC breakage.
This commit is contained in:
Ahmad Fatoum
2018-01-18 13:22:41 +01:00
parent a2edc9d641
commit 30ef3f3122
2 changed files with 16 additions and 10 deletions
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21
src/Makefile
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@@ -250,16 +250,17 @@ ifeq ($(PLATFORM),PLATFORM_ANDROID)
endif
# Define compiler flags:
# -O1 defines optimization level
# -g enable debugging
# -s strip unnecessary data from build
# -Wall turns on most, but not all, compiler warnings
# -std=c99 defines C language mode (standard C from 1999 revision)
# -std=gnu99 defines C language mode (GNU C from 1999 revision)
# -fgnu89-inline declaring inline functions support (GCC optimized)
# -Wno-missing-braces ignore invalid warning (GCC bug 53119)
# -D_DEFAULT_SOURCE use with -std=c99 on Linux and PLATFORM_WEB, required for timespec
CFLAGS += -O1 -Wall -std=c99 -D_DEFAULT_SOURCE -fgnu89-inline -Wno-missing-braces
# -O1 defines optimization level
# -g enable debugging
# -s strip unnecessary data from build
# -Wall turns on most, but not all, compiler warnings
# -std=c99 defines C language mode (standard C from 1999 revision)
# -std=gnu99 defines C language mode (GNU C from 1999 revision)
# -fgnu89-inline declaring inline functions support (GCC optimized)
# -Wno-missing-braces ignore invalid warning (GCC bug 53119)
# -D_DEFAULT_SOURCE use with -std=c99 on Linux and PLATFORM_WEB, required for timespec
# -Werror=pointer-arith catch unportable code that does direct arithmetic on void pointers
CFLAGS += -O1 -Wall -std=c99 -D_DEFAULT_SOURCE -fgnu89-inline -Wno-missing-braces -Werror=pointer-arith
# Additional flags for compiler (if desired)
#CFLAGS += -Wextra -Wmissing-prototypes -Wstrict-prototypes