From 27842288b393e532e5693f2a2bab94fee73a326d Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Mon, 4 Aug 2008 13:20:36 +0000 Subject: libbb: make xrealloc_vector zero out the realloc'ed tail function old new delta xrealloc_vector_helper 51 76 +25 man_main 712 705 -7 act 250 234 -16 create_list 91 70 -21 getopt_main 695 664 -31 load_dep_bb 281 248 -33 fileAction 744 709 -35 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/6 up/down: 25/-143) Total: -118 bytes --- include/libbb.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/libbb.h') diff --git a/include/libbb.h b/include/libbb.h index 2dcdeacb1..f7a68492c 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -570,6 +570,10 @@ void *malloc_or_warn(size_t size) FAST_FUNC; void *xmalloc(size_t size) FAST_FUNC; void *xzalloc(size_t size) FAST_FUNC; void *xrealloc(void *old, size_t size) FAST_FUNC; +/* After xrealloc_vector(v, 4, idx) it's ok to use + * at least v[idx] and v[idx+1], for all idx values. + * shift specifies how many new elements are added (1: 2, 2: 4... 8: 256...) + * when all elements are used up. New elements are zeroed out. */ #define xrealloc_vector(vector, shift, idx) \ xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx)) void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC; -- cgit v1.2.3