qf/quakeforge
0
0
Fork 0
mirror of https://git.code.sf.net/p/quake/quakeforge synced 2025-04-08 10:21:40 +00:00
Code Issues Projects Releases Packages Wiki Activity

Add some error checking for attaching identifiers.

Browse source
This commit is contained in:
Bill Currie 2012-07-19 09:59:17 +09:00
parent 0ccf4093e4
commit 01c8aaae8c
1 changed files with 22 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
tools/qfcc/source/dags.c
View file

@ -221,9 +221,31 @@ dagnode_match (const dagnode_t *n, const daglabel_t *op,
return 1;
}
static int
op_is_identifer (operand_t *op)
{
while (op->op_type == op_alias)
op = op->o.alias;
if (op->op_type == op_pointer)
return 1;
if (op->op_type == op_temp)
return 1;
if (op->op_type != op_symbol)
return 0;
if (op->o.symbol->sy_type != sy_var)
return 0;
return 1;
}
static void
dagnode_attach_label (dagnode_t *n, daglabel_t *l)
{
if (!l->op)
internal_error (0, "attempt to attach operator label to dagnode "
"identifers");
if (!op_is_identifer (l->op))
internal_error (0, "attempt to attach non-identifer label to dagnode "
"identifers");
if (n->identifiers)
n->identifiers->prev = &l->next;
l->next = n->identifiers;