# <http://lists.gnu.org/archive/html/emacs-diffs/2011-11/msg00265.html>.
nw="$nw -Wshadow"
+ # Emacs's use of alloca inhibits protecting the stack.
+ nw="$nw -Wstack-protector"
+
# The following line should be removable at some point.
nw="$nw -Wsuggest-attribute=pure"
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to use -Wstack-protector" >&5
-$as_echo_n "checking whether to use -Wstack-protector... " >&6; }
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#if (1 <= __LONG_MAX__ >> 31 >> 31 \
- && 4 < __GNUC__ + (7 < __GNUC_MINOR__ + (2 <= __GNUC_PATCHLEVEL__)))
- /* OK */
- #else
- #error "Not GCC, or GCC before 4.7.2, or 'long int' has < 64 bits."
- #endif
-
-int
-main ()
-{
-
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_cpp "$LINENO"; then :
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
- nw="$nw -Wstack-protector"
-fi
-rm -f conftest.err conftest.$ac_ext
-
if test -n "$GCC"; then