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riscv-gcc-1
Commit e19a77e6 by Richard Stallman
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(unary_expr => ANDAND identifier): Handle lookup_label returning 0. 

From-SVN: r3325
parent 7d9795e5
Showing with 9 additions and 3 deletions
gcc/c-parse.in
...@@ -390,9 +390,15 @@ unary_expr: ...@@ -390,9 +390,15 @@ unary_expr:
/* Refer to the address of a label as a pointer. */ /* Refer to the address of a label as a pointer. */
| ANDAND identifier | ANDAND identifier
{ tree label = lookup_label ($2); { tree label = lookup_label ($2);
TREE_USED (label) = 1; if (label == 0)
$$ = build1 (ADDR_EXPR, ptr_type_node, label); $$ = null_pointer_node;
TREE_CONSTANT ($$) = 1; } else
{
TREE_USED (label) = 1;
$$ = build1 (ADDR_EXPR, ptr_type_node, label);
TREE_CONSTANT ($$) = 1;
}
}
/* This seems to be impossible on some machines, so let's turn it off. /* This seems to be impossible on some machines, so let's turn it off.
You can use __builtin_next_arg to find the anonymous stack args. You can use __builtin_next_arg to find the anonymous stack args.
| '&' ELLIPSIS | '&' ELLIPSIS
......
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