diff options
| author | Marcus Boerger <helly@php.net> | 2002-10-02 12:52:53 +0000 |
|---|---|---|
| committer | Marcus Boerger <helly@php.net> | 2002-10-02 12:52:53 +0000 |
| commit | 614d10a8cbd009c3107c210f54645f78f58cfe1c (patch) | |
| tree | 8f7683698b13d998d51c693a92848d7e2ef92578 /acinclude.m4 | |
| parent | 66833340662ec055592b9cca3a23825fa619da8e (diff) | |
| download | php-git-614d10a8cbd009c3107c210f54645f78f58cfe1c.tar.gz | |
Check for C99 conformance of snprintf.
#This way we force using internal version if a broken library is used.
#E.g. length parameter is broken, return value or default precision wrong.
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index 7f8f57a181..01810775be 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -1164,7 +1164,7 @@ AC_DEFUN(PHP_MISSING_FCLOSE_DECL,[ ]) dnl -dnl Check for broken sprintf() +dnl Check for broken sprintf(), C99 conformance dnl AC_DEFUN(PHP_AC_BROKEN_SPRINTF,[ AC_CACHE_CHECK(whether sprintf is broken, ac_cv_broken_sprintf,[ @@ -1177,9 +1177,42 @@ AC_DEFUN(PHP_AC_BROKEN_SPRINTF,[ ]) ]) if test "$ac_cv_broken_sprintf" = "yes"; then - AC_DEFINE(PHP_BROKEN_SPRINTF, 1, [ ]) + AC_DEFINE(PHP_BROKEN_SPRINTF, 1, [Whether sprintf is C99 conform]) else - AC_DEFINE(PHP_BROKEN_SPRINTF, 0, [ ]) + AC_DEFINE(PHP_BROKEN_SPRINTF, 0, [Whether sprintf is C99 conform]) + fi +]) + +dnl +dnl Check for broken snprintf(), C99 conformance +dnl +AC_DEFUN(PHP_AC_BROKEN_SNPRINTF,[ + AC_CACHE_CHECK(whether snprintf is broken, ac_cv_broken_snprintf,[ + AC_TRY_RUN([ +#define NULL (0L) +main() { + char buf[20]; + int res = 0; + res = res || (snprintf(buf, 2, "marcus") != 6); + res = res || (buf[1] != '\0'); + res = res || (snprintf(buf, 0, "boerger") != 7); + res = res || (buf[0] != 'm'); + res = res || (snprintf(NULL, 0, "boerger") != 7); + res = res || (snprintf(buf, sizeof(buf), "%f", 0.12345678) != 8); + exit(res); +} + ],[ + ac_cv_broken_snprintf=no + ],[ + ac_cv_broken_snprintf=yes + ],[ + ac_cv_broken_snprintf=no + ]) + ]) + if test "$ac_cv_broken_snprintf" = "yes"; then + AC_DEFINE(PHP_BROKEN_SNPRINTF, 1, [Whether snprintf is C99 conform]) + else + AC_DEFINE(PHP_BROKEN_SNPRINTF, 0, [Whether snprintf is C99 conform]) fi ]) |