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Enable -Wundef, when supported.

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This can catch bugs in which one header defines a numeric constant, and another
uses it without including the defining header. Undefined preprocessor symbols
expand to '0', so that this will compile fine, silently doing the math wrong.
This commit is contained in:
David Goldblatt 2017-04-21 13:47:49 -07:00 • committed by David Goldblatt
parent 3823effe12
commit 425253e2cd
5 changed files with 12 additions and 13 deletions
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10
src/jemalloc.c
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@ -2285,15 +2285,7 @@ je_valloc(size_t size) {
}
#endif
/*
* is_malloc(je_malloc) is some macro magic to detect if jemalloc_defs.h has
* #define je_malloc malloc
*/
#define malloc_is_malloc 1
#define is_malloc_(a) malloc_is_ ## a
#define is_malloc(a) is_malloc_(a)
#if ((is_malloc(je_malloc) == 1) && defined(JEMALLOC_GLIBC_MALLOC_HOOK))
#if defined(JEMALLOC_IS_MALLOC) && defined(JEMALLOC_GLIBC_MALLOC_HOOK)
/*
* glibc provides the RTLD_DEEPBIND flag for dlopen which can make it possible
* to inconsistently reference libc's malloc(3)-compatible functions