re PR middle-end/77842 (genmatch segfault on a missing brace)

2016-10-05  Richard Biener  <rguenther@suse.de>

	PR middle-end/77842
	* genmatch.c (parser::parse_c_expr): Handle premature EOF.

From-SVN: r240774

gcc/ChangeLog

+2016-10-05  Richard Biener  <rguenther@suse.de>
+
+	PR middle-end/77842
+	* genmatch.c (parser::parse_c_expr): Handle premature EOF.
+
 2016-10-05  Pierre-Marie de Rodat  <derodat@adacore.com>
 
 	* dwarf2out.c (dwarf2out_imported_module_or_decl): Move DWARF

gcc/genmatch.c

@@ -4124,6 +4124,8 @@ parser::parse_c_expr (cpp_ttype start)
       else if (token->type == end
 	       && --opencnt == 0)
 	break;
+      else if (token->type == CPP_EOF)
+	fatal_at (token, "unexpected end of file");
 
       /* This is a lame way of counting the number of statements.  */
       if (token->type == CPP_SEMICOLON)