Files
Bruno Haible 9c6d8d0b46 Avoid wrong configure results with gcc -fsanitize=address.
This completes the work done on 2016-02-06 on this topic.

* m4/memmem.m4 (gl_FUNC_MEMMEM): Free allocated memory before returning.
* m4/getcwd.m4 (gl_FUNC_GETCWD_NULL): Likewise.
* m4/strcasestr.m4 (gl_FUNC_STRCASESTR): Likewise.
* m4/strstr.m4 (gl_FUNC_STRSTR): Likewise.
* m4/fopen.m4 (gl_FUNC_FOPEN): Close allocated FILE streams before
returning.
* m4/fflush.m4 (gl_FUNC_FFLUSH_STDIN): Likewise.
* m4/fpurge.m4 (gl_FUNC_FPURGE): Likewise.
* m4/ftello.m4 (gl_FUNC_FTELLO): Likewise.
* m4/rmdir-errno.m4 (gl_FUNC_RMDIR_NOTEMPTY): Likewise.
* m4/signbit.m4 (gl_FLOATTYPE_SIGN_LOCATION): Likewise.
* m4/ungetc.m4 (gl_FUNC_UNGETC_WORKS): Likewise.
* m4/getdelim.m4 (gl_FUNC_GETDELIM): Close allocated FILE streams and
free allocated memory before returning.
* m4/getline.m4 (gl_FUNC_GETLINE): Likewise.
* m4/d-ino.m4 (gl_CHECK_TYPE_STRUCT_DIRENT_D_INO): Close allocated DIR
objects before returning.
* m4/iconv.m4 (AM_ICONV_LINK): Close allocated iconv_t handles before
returning.
2017-05-20 15:26:26 +02:00

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# fopen.m4 serial 10
dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_FOPEN],
[
AC_REQUIRE([gl_STDIO_H_DEFAULTS])
AC_REQUIRE([AC_CANONICAL_HOST])
case "$host_os" in
mingw* | pw*)
dnl Replace fopen, for handling of "/dev/null".
REPLACE_FOPEN=1
dnl fopen on mingw also has the trailing slash bug.
gl_cv_func_fopen_slash="guessing no"
;;
*)
dnl fopen("foo/", "w") should not create a file when the file name has a
dnl trailing slash.
AC_CACHE_CHECK([whether fopen recognizes a trailing slash],
[gl_cv_func_fopen_slash],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stddef.h>
#include <stdio.h>
int main ()
{
FILE *fp = fopen ("conftest.sl/", "w");
int result = (fp != NULL);
if (fp != NULL)
fclose (fp);
return result;
}]])],
[gl_cv_func_fopen_slash=yes],
[gl_cv_func_fopen_slash=no],
[
changequote(,)dnl
case "$host_os" in
aix* | hpux* | solaris2.[0-9] | solaris2.[0-9].*)
gl_cv_func_fopen_slash="guessing no" ;;
*)
gl_cv_func_fopen_slash="guessing yes" ;;
esac
changequote([,])dnl
])
rm -f conftest.sl
])
;;
esac
case "$gl_cv_func_fopen_slash" in
*no)
AC_DEFINE([FOPEN_TRAILING_SLASH_BUG], [1],
[Define to 1 if fopen() fails to recognize a trailing slash.])
REPLACE_FOPEN=1
;;
esac
])
# Prerequisites of lib/fopen.c.
AC_DEFUN([gl_PREREQ_FOPEN], [:])