maint: update comment gcc-4.6.2 still botches -Wsuggest-attribute=pure

* configure.ac: Update the comment on which gcc versions still must
not use -Wsuggest-attribute=pure option: still required on post-
Fedora 16 rawhide's 4.6.2 20111027.

diff --git a/configure.ac b/configure.ac
index 3c4681c..a174178 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -124,7 +124,7 @@ if test "$gl_gcc_warnings" = yes; then
   gl_WARN_ADD([-Wno-format-nonliteral])
   gl_WARN_ADD([-Wno-unsuffixed-float-constants])
 
-  # Enable this warning only with gcc-4.7 and newer.  With 4.6.1 20110824,
+  # Enable this warning only with gcc-4.7 and newer.  With 4.6.2 20111027,
   # it suggests test.c's advance function may be pure, even though it
   # increments a global variable.  Oops.
   # Normally we'd write code to test for the precise failure, but that