re PR other/78766 (GCC Awk scripts use the non-POSIX /^{/ regex)

	PR other/78766
	* opt-functions.awk (opt_args): Use [{] instead of { in regexps.
	Formatting fix.

From-SVN: r243583

gcc/ChangeLog

+2016-12-12  Jakub Jelinek  <jakub@redhat.com>
+
+	PR other/78766
+	* opt-functions.awk (opt_args): Use [{] instead of { in regexps.
+	Formatting fix.
+
 2016-12-12  Martin Sebor  <msebor@redhat.com>
 
 	PR middle-end/78622

gcc/opt-functions.awk

@@ -61,10 +61,10 @@ function opt_args(name, flags)
 	if (flags !~ " " name "\\(")
 		return ""
 	sub(".* " name "\\(", "", flags)
-	if (flags ~ "^{")
+	if (flags ~ "^[{]")
 	{
-		sub ("^{", "", flags)
-		sub("}\\).*", "", flags)
+		sub ("^[{]", "", flags)
+		sub ("}\\).*", "", flags)
 	}
 	else
 		sub("\\).*", "", flags)