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fd1ad1e25a
The `<limits.h>` header file is part of the standard C89 headers [1] and on current systems can be included unconditionally. Since PHP requires at least C89 or greater, the `HAVE_LIMITS_H` symbol defined by Autoconf in configure.ac [2] can be ommitted and simplifed however due to bundled file library (libmagic) and timelib still using it, the removal there was omitted and done only in Zend.m4 file. Current bundled libraries libtime, oniguruma, and libmagic still include partial `HAVE_LIMITS_H` usage and will be more refactored when this is possible. Refs: [1] https://port70.net/~nsz/c/c89/c89-draft.html#4.1.2 [2] https://git.savannah.gnu.org/cgit/autoconf.git/tree/lib/autoconf/headers.m4
70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
#ifndef TSRM_CONFIG_COMMON_H
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#define TSRM_CONFIG_COMMON_H
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#ifndef __CYGWIN__
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# ifdef _WIN32
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# define TSRM_WIN32
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# endif
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#endif
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#ifdef TSRM_WIN32
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# include "tsrm_config.w32.h"
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#else
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# include <tsrm_config.h>
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# include <sys/param.h>
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#endif
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#if HAVE_ALLOCA_H && !defined(_ALLOCA_H)
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# include <alloca.h>
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#endif
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/* AIX requires this to be the first thing in the file. */
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#ifndef __GNUC__
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# ifndef HAVE_ALLOCA_H
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# ifdef _AIX
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#pragma alloca
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# else
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# ifndef alloca /* predefined by HP cc +Olibcalls */
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char *alloca ();
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# endif
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# endif
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# endif
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#endif
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <limits.h>
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#ifndef MAXPATHLEN
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# if _WIN32
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# include "win32/ioutil.h"
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# define MAXPATHLEN PHP_WIN32_IOUTIL_MAXPATHLEN
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# elif PATH_MAX
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# define MAXPATHLEN PATH_MAX
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# elif defined(MAX_PATH)
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# define MAXPATHLEN MAX_PATH
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# else
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# define MAXPATHLEN 256
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# endif
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#endif
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#if (HAVE_ALLOCA || (defined (__GNUC__) && __GNUC__ >= 2))
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# define TSRM_ALLOCA_MAX_SIZE 4096
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# define TSRM_ALLOCA_FLAG(name) \
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int name;
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# define tsrm_do_alloca_ex(size, limit, use_heap) \
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((use_heap = ((size) > (limit))) ? malloc(size) : alloca(size))
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# define tsrm_do_alloca(size, use_heap) \
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tsrm_do_alloca_ex(size, TSRM_ALLOCA_MAX_SIZE, use_heap)
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# define tsrm_free_alloca(p, use_heap) \
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do { if (use_heap) free(p); } while (0)
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#else
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# define TSRM_ALLOCA_FLAG(name)
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# define tsrm_do_alloca(p, use_heap) malloc(p)
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# define tsrm_free_alloca(p, use_heap) free(p)
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#endif
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#endif /* TSRM_CONFIG_COMMON_H */
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