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src: enable -Wzero-as-null-pointer-constant when using clang

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Markus F.X.J. Oberhumer
2022-08-20 10:51:08 +02:00
parent d001a63bce
commit 6931a3aa70
3 changed files with 13 additions and 10 deletions
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src/conf.h
+5 -2
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@@ -78,8 +78,9 @@ ACC_COMPILE_TIME_ASSERT_HEADER(-1 == ~0) // two's complement - see http://wg21.l
ACC_COMPILE_TIME_ASSERT_HEADER(0u-1 == ~0u) // two's complement - see http://wg21.link/P0907R4
ACC_COMPILE_TIME_ASSERT_HEADER((1u << 31) << 1 == 0)
ACC_COMPILE_TIME_ASSERT_HEADER(((int)(1u << 31)) >> 31 == -1) // arithmetic right shift
ACC_COMPILE_TIME_ASSERT_HEADER((-1) >> 31 == -1) // arithmetic right shift
ACC_COMPILE_TIME_ASSERT_HEADER(CHAR_MAX == 255) // -funsigned-char
ACC_COMPILE_TIME_ASSERT_HEADER((char)(-1) > 0) // -funsigned-char
ACC_COMPILE_TIME_ASSERT_HEADER((char)(-1) == 255) // -funsigned-char
// enable/disable some warnings
// Some non-GLIBC toolchains do not use 'nullptr' everywhere when C++:
@@ -88,6 +89,8 @@ ACC_COMPILE_TIME_ASSERT_HEADER((char)(-1) > 0) // -funsigned-char
// 51:32: error: zero as null pointer constant
#if (ACC_CC_GNUC >= 0x040700) && defined(__GLIBC__)
# pragma GCC diagnostic error "-Wzero-as-null-pointer-constant"
#elif (ACC_CC_CLANG >= 0x050000ul)
# pragma clang diagnostic error "-Wzero-as-null-pointer-constant"
#endif
#if (ACC_CC_MSC)
@@ -325,7 +328,7 @@ inline void NO_fprintf(FILE *, const char *, ...) {}
typedef a acc_tmp_a_t; typedef b acc_tmp_b_t; \
__packed_struct(acc_tmp_t) acc_tmp_b_t x; acc_tmp_a_t y; acc_tmp_b_t z; __packed_struct_end() \
COMPILE_TIME_ASSERT(sizeof(struct acc_tmp_t) == 2*sizeof(b)+sizeof(a)) \
COMPILE_TIME_ASSERT(sizeof(((acc_tmp_t*)0)->x)+sizeof(((acc_tmp_t*)0)->y)+sizeof(((acc_tmp_t*)0)->z) == 2*sizeof(b)+sizeof(a)) \
COMPILE_TIME_ASSERT(sizeof(((acc_tmp_t*)nullptr)->x)+sizeof(((acc_tmp_t*)nullptr)->y)+sizeof(((acc_tmp_t*)nullptr)->z) == 2*sizeof(b)+sizeof(a)) \
}
#if defined(__acc_alignof)
# define __COMPILE_TIME_ASSERT_ALIGNOF(a,b) \