Avoid potential negative array index access to cached text.

[LibreOffice.git] / external / libqxp / ax_gcc_func_attribute.m4.patch

--- configure
+++ configure
@@ -18136,7 +18136,7 @@
 
 _ACEOF
 if ac_fn_cxx_try_link "$LINENO"; then :
-                                      if test -s conftest.err; then :
+                                      if grep -- -Wattributes conftest.err; then :
   ax_cv_have_func_attribute_visibility=no
 else
   ax_cv_have_func_attribute_visibility=yes