[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH 3/3] posix: Remove alloca definition from regex
From: |
Adhemerval Zanella |
Subject: |
[PATCH 3/3] posix: Remove alloca definition from regex |
Date: |
Wed, 6 Jan 2021 15:17:07 -0300 |
Since it is not used anymore. No functional changes is expected.
Checked on x86_64-linux-gnu.
---
posix/regex_internal.h | 19 -------------------
1 file changed, 19 deletions(-)
diff --git a/posix/regex_internal.h b/posix/regex_internal.h
index e31ac92674..641b27e2b1 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
--
2.25.1