database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-27 12:41:57 +03:00
Code Activity

Don't try to call posix_fadvise() unless <fcntl.h> supplies a declaration

Browse Source 
for it.  Hopefully will fix core dump evidenced by some buildfarm members
since fadvise patch went in.  The actual definition of the function is not
ABI-compatible with compiler's default assumption in the absence of any
declaration, so it's clearly unsafe to try to call it without seeing a
declaration.
This commit is contained in:
Tom Lane
2006-06-18 18:30:21 +00:00
parent 22045666d6
commit 1e8ae13640
4 changed files with 86 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

73
configure vendored
View File

@ -13917,6 +13917,79 @@ _ACEOF
fi
echo "$as_me:$LINENO: checking whether posix_fadvise is declared" >&5
echo $ECHO_N "checking whether posix_fadvise is declared... $ECHO_C" >&6
if test "${ac_cv_have_decl_posix_fadvise+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <fcntl.h>
int
main ()
{
#ifndef posix_fadvise
char *p = (char *) posix_fadvise;
#endif
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
(eval $ac_compile) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_c_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest.$ac_objext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_cv_have_decl_posix_fadvise=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_cv_have_decl_posix_fadvise=no
fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
fi
echo "$as_me:$LINENO: result: $ac_cv_have_decl_posix_fadvise" >&5
echo "${ECHO_T}$ac_cv_have_decl_posix_fadvise" >&6
if test $ac_cv_have_decl_posix_fadvise = yes; then
cat >>confdefs.h <<_ACEOF
#define HAVE_DECL_POSIX_FADVISE 1
_ACEOF
else
cat >>confdefs.h <<_ACEOF
#define HAVE_DECL_POSIX_FADVISE 0
_ACEOF
fi
HAVE_IPV6=no
echo "$as_me:$LINENO: checking for struct sockaddr_in6" >&5