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CLEANUP: compiler: prefer char * over void * for pointer arithmetic

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This patch changes two instances of pointer arithmetic on void *
to use char * instead, to avoid UB. This is essentially to please
UB analyzers, though.
This commit is contained in:
Ben Kallus 2025-07-20 12:48:07 -04:00 committed by Willy Tarreau
parent 75e480d107
commit d3b46cca7b
1 changed files with 2 additions and 2 deletions
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4
include/haproxy/compiler.h
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@ -350,7 +350,7 @@
* <type> which has its member <name> stored at address <ptr>. * <type> which has its member <name> stored at address <ptr>.
*/ */
#ifndef container_of #ifndef container_of
#define container_of(ptr, type, name) ((type *)(((void *)(ptr)) - ((long)&((type *)0)->name))) #define container_of(ptr, type, name) ((type *)(((char *)(ptr)) - ((long)&((type *)0)->name)))
#endif #endif
/* returns a pointer to the structure of type <type> which has its member <name> /* returns a pointer to the structure of type <type> which has its member <name>
@ -359,7 +359,7 @@
#ifndef container_of_safe #ifndef container_of_safe
#define container_of_safe(ptr, type, name) \ #define container_of_safe(ptr, type, name) \
({ void *__p = (ptr); \ ({ void *__p = (ptr); \
__p ? (type *)(__p - ((long)&((type *)0)->name)) : (type *)0; \ __p ? (type *)((char *)__p - ((long)&((type *)0)->name)) : (type *)0; \
}) })
#endif #endif