Mercurial > gnulib
view m4/tsearch.m4 @ 40140:81f075eaa990
ptsname_r: Work around bug on Android 4.3.
* m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): Define
HAVE_ESSENTIALLY_WORKING_PTSNAME_R. Test whether the return value is
correct.
* lib/ptsname_r.c (__ptsname_r): If HAVE_ESSENTIALLY_WORKING_PTSNAME_R
is defined, just fix the return value.
* doc/glibc-functions/ptsname_r.texi: Mention the Android bug. Reword:
The behaviour of musl libc is nothing to be "fixed", since it is
compliant with the next POSIX standard.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 26 Jan 2019 15:23:19 +0100 |
parents | b06060465f09 |
children |
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# tsearch.m4 serial 8 dnl Copyright (C) 2006-2019 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_TSEARCH], [ AC_REQUIRE([gl_SEARCH_H_DEFAULTS]) AC_CHECK_FUNCS([tsearch twalk]) if test $ac_cv_func_tsearch = yes; then dnl On OpenBSD 4.0, the return value of tdelete() is incorrect. AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether tdelete works], [gl_cv_func_tdelete_works], [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include <stddef.h> #include <search.h> static int cmp_fn (const void *a, const void *b) { return *(const int *) a - *(const int *) b; } int main () { int result = 0; int x = 0; void *root = NULL; if (!(tfind (&x, &root, cmp_fn) == NULL)) result |= 1; tsearch (&x, &root, cmp_fn); if (!(tfind (&x, &root, cmp_fn) != NULL)) result |= 2; if (!(tdelete (&x, &root, cmp_fn) != NULL)) result |= 4; return result; }]])], [gl_cv_func_tdelete_works=yes], [gl_cv_func_tdelete_works=no], [case "$host_os" in openbsd*) gl_cv_func_tdelete_works="guessing no" ;; # Guess yes on native Windows. mingw*) gl_cv_func_tdelete_works="guessing yes" ;; *) gl_cv_func_tdelete_works="guessing yes" ;; esac ]) ]) case "$gl_cv_func_tdelete_works" in *no) REPLACE_TSEARCH=1 ;; esac else HAVE_TSEARCH=0 fi if test $ac_cv_func_twalk != yes; then HAVE_TWALK=0 fi ]) # Prerequisites of lib/tsearch.c. AC_DEFUN([gl_PREREQ_TSEARCH], [ : ])