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author | Paul Eggert <eggert@cs.ucla.edu> | 2021-01-08 17:17:32 -0800 |
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committer | Paul Eggert <eggert@cs.ucla.edu> | 2021-01-08 17:17:57 -0800 |
commit | 87ed1f9c4bc4ae9e98e1293465a5b3a929b9c3f9 (patch) | |
tree | caae83fb9efbe7ba0c597e19a2346104766714ce /lib | |
parent | 1731fef3d6d883bc8619c468a1a69b1d090a95c1 (diff) | |
download | gnulib-87ed1f9c4bc4ae9e98e1293465a5b3a929b9c3f9.tar.gz |
regex: stop using alloca
* lib/regex_internal.h: Do not include <alloca.h> or define
__libc_use_alloca or alloca. Patch written by Adhemerval Zanella:
https://sourceware.org/pipermail/libc-alpha/2021-January/121374.html
* modules/regex (Depends-on): Remove alloca-opt.
Diffstat (limited to 'lib')
-rw-r--r-- | lib/regex_internal.h | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/lib/regex_internal.h b/lib/regex_internal.h index 5d4d5fe2b3..b4f91d9ec7 100644 --- a/lib/regex_internal.h +++ b/lib/regex_internal.h @@ -445,25 +445,6 @@ typedef struct re_dfa_t re_dfa_t; #define re_string_skip_bytes(pstr,idx) ((pstr)->cur_idx += (idx)) #define re_string_set_index(pstr,idx) ((pstr)->cur_idx = (idx)) -#if defined _LIBC || HAVE_ALLOCA -# include <alloca.h> -#endif - -#ifndef _LIBC -# if HAVE_ALLOCA -/* The OS usually guarantees only one guard page at the bottom of the stack, - and a page size can be as small as 4096 bytes. So we cannot safely - allocate anything larger than 4096 bytes. Also care for the possibility - of a few compiler-allocated temporary stack slots. */ -# define __libc_use_alloca(n) ((n) < 4032) -# else -/* alloca is implemented with malloc, so just use malloc. */ -# define __libc_use_alloca(n) 0 -# undef alloca -# define alloca(n) malloc (n) -# endif -#endif - #ifdef _LIBC # define MALLOC_0_IS_NONNULL 1 #elif !defined MALLOC_0_IS_NONNULL |