The following makes sure to initialize the location range for c_exprs the gimple parser routines eventually return.
Bootstrap / regtest in progress on x86_64-unknown-linux-gnu. Richard. 2017-02-23 Richard Biener <rguent...@suse.de> PR c/79684 * gimple-parser.c (c_parser_gimple_statement): Use set_error to initialize c_exprs to return. (c_parser_gimple_binary_expression): Likewise. (c_parser_gimple_unary_expression): Likewise. (c_parser_gimple_postfix_expression): Likewise. Index: gcc/c/gimple-parser.c =================================================================== --- gcc/c/gimple-parser.c (revision 245676) +++ gcc/c/gimple-parser.c (working copy) @@ -270,7 +270,7 @@ c_parser_gimple_statement (c_parser *par lhs = c_parser_gimple_unary_expression (parser); loc = EXPR_LOCATION (lhs.value); - rhs.value = error_mark_node; + rhs.set_error (); /* GIMPLE call statement without LHS. */ if (c_parser_next_token_is (parser, CPP_SEMICOLON) @@ -455,7 +455,7 @@ c_parser_gimple_binary_expression (c_par /* Location of the binary operator. */ struct c_expr ret, lhs, rhs; enum tree_code code = ERROR_MARK; - ret.value = error_mark_node; + ret.set_error (); lhs = c_parser_gimple_postfix_expression (parser); if (c_parser_error (parser)) return ret; @@ -553,9 +553,7 @@ c_parser_gimple_unary_expression (c_pars struct c_expr ret, op; location_t op_loc = c_parser_peek_token (parser)->location; location_t finish; - ret.original_code = ERROR_MARK; - ret.original_type = NULL; - ret.value = error_mark_node; + ret.set_error (); switch (c_parser_peek_token (parser)->type) { case CPP_AND: @@ -723,11 +721,10 @@ c_parser_parse_ssa_name (c_parser *parse static struct c_expr c_parser_gimple_postfix_expression (c_parser *parser) { - struct c_expr expr; location_t loc = c_parser_peek_token (parser)->location; source_range tok_range = c_parser_peek_token (parser)->get_range (); - expr.original_code = ERROR_MARK; - expr.original_type = NULL; + struct c_expr expr; + expr.set_error (); switch (c_parser_peek_token (parser)->type) { case CPP_NUMBER: