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coverity: don't use (void)0 under coverity

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I'm not sure why this is needed, but apparrently coverity doesn't like
(void)0. With this change, coverity can (almost) build systemd:

CFLAGS='-D_Float128="long double"' meson cov-build -Dman=false && \
  CCACHE_DISABLE=1 COVERITY_UNSUPPORTED=1 cov-build --dir cov-int ninja -C cov-build

Patch originially by Marek Cermak <macermak@redhat.com>.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2018-01-04 09:45:23 +01:00
parent 14899e2ba3
commit 963c6c90af
1 changed files with 8 additions and 2 deletions
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10
src/basic/macro.h
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@ -139,11 +139,17 @@ static inline unsigned long ALIGN_POWER2(unsigned long u) {
return 1UL << (sizeof(u) * 8 - __builtin_clzl(u - 1UL));
}
#ifndef __COVERITY__
# define VOID_0 ((void)0)
#else
# define VOID_0 ((void*)0)
#endif
#define ELEMENTSOF(x) \
__extension__ (__builtin_choose_expr( \
!__builtin_types_compatible_p(typeof(x), typeof(&*(x))), \
sizeof(x)/sizeof((x)[0]), \
(void)0))
VOID_0))
/*
* STRLEN - return the length of a string literal, minus the trailing NUL byte.
@ -181,7 +187,7 @@ static inline unsigned long ALIGN_POWER2(unsigned long u) {
__builtin_constant_p(_B) && \
__builtin_types_compatible_p(typeof(_A), typeof(_B)), \
((_A) > (_B)) ? (_A) : (_B), \
(void)0))
VOID_0))
/* takes two types and returns the size of the larger one */
#define MAXSIZE(A, B) (sizeof(union _packed_ { typeof(A) a; typeof(B) b; }))