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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2018-07-16 17:39:23 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-02-09 16:58:16 -0300
commit36c604ed36b9989a38dd4e323c404d89fd173009 (patch)
tree9e8e7b09d73fe64eb5175dbc382f437fe6838fd6 /posix
parentf3e5c7262e77ca84bcef60fe20a3dc70eae12d5e (diff)
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regex: stop using alloca
It syncs with gnulib version 87ed1f9c4.  No functional changes is
expected.

Checked on x86_64-linux-gnu.
Diffstat (limited to 'posix')
-rw-r--r--posix/regex_internal.h19
1 files changed, 0 insertions, 19 deletions
diff --git a/posix/regex_internal.h b/posix/regex_internal.h
index 011f733176..edcdc07e99 100644
--- a/posix/regex_internal.h
+++ b/posix/regex_internal.h
@@ -444,25 +444,6 @@ 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