re PR middle-end/78901 (ICE: verify_gimple failed (error: statement marked for…

re PR middle-end/78901 (ICE: verify_gimple failed (error: statement marked for throw in middle of block))

	PR middle-end/78901
	* except.c (nothrow_libfn_p): Expect libc_name_p to return
	const struct libc_name_struct *, if it returns NULL, return 0,
	otherwise check c_ver and use flag_isoc99 or flag_isoc11.
	* cfns.gperf: Add %struct-type and libc_name_struct definition.
	For all C89 C library functions add , 89 after the name, add
	C99 C library functions with , 99 and C11 C library functions
	with , 11 suffix.
	* cfns.h: Regenerated.

From-SVN: r243914

gcc/cp/ChangeLog

+2016-12-24  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/78901
+	* except.c (nothrow_libfn_p): Expect libc_name_p to return
+	const struct libc_name_struct *, if it returns NULL, return 0,
+	otherwise check c_ver and use flag_isoc99 or flag_isoc11.
+	* cfns.gperf: Add %struct-type and libc_name_struct definition.
+	For all C89 C library functions add , 89 after the name, add
+	C99 C library functions with , 99 and C11 C library functions
+	with , 11 suffix.
+	* cfns.h: Regenerated.
+
 2016-12-22  Jason Merrill  <jason@redhat.com>
 
 	PR c++/78906

gcc/cp/except.c

@@ -892,8 +892,17 @@ nothrow_libfn_p (const_tree fn)
      unless the system headers are playing rename tricks, and if
      they are, we don't want to be confused by them.  */
   id = DECL_NAME (fn);
-  return !!libc_name::libc_name_p (IDENTIFIER_POINTER (id),
-				   IDENTIFIER_LENGTH (id));
+  const struct libc_name_struct *s
+    = libc_name::libc_name_p (IDENTIFIER_POINTER (id), IDENTIFIER_LENGTH (id));
+  if (s == NULL)
+    return 0;
+  switch (s->c_ver)
+    {
+    case 89: return 1;
+    case 99: return !flag_iso || flag_isoc99;
+    case 11: return !flag_iso || flag_isoc11;
+    default: gcc_unreachable ();
+    }
 }
 
 /* Returns nonzero if an exception of type FROM will be caught by a