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common/mem.h: introduce xstrdup_replace()

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Consolatis 2024-11-15 22:59:57 +01:00 • committed by Johan Malm
parent 6754801052
commit a4204d3335
1 changed files with 8 additions and 0 deletions
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8
include/common/mem.h
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@ -44,6 +44,14 @@ void *xrealloc(void *ptr, size_t size);
*/ */
char *xstrdup(const char *str); char *xstrdup(const char *str);
/*
* Same as ptr = xstrdup(str) but free
* <ptr> before assigning the result.
*/
#define xstrdup_replace(ptr, str) do { \
free(ptr); (ptr) = xstrdup(str); \
} while (0)
/* /*
* Frees memory pointed to by <ptr> and sets <ptr> to NULL. * Frees memory pointed to by <ptr> and sets <ptr> to NULL.
* Does nothing if <ptr> is already NULL. * Does nothing if <ptr> is already NULL.