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widl: Fix a crash in compare_expr.

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Dan Hipschman 2007-10-24 18:06:16 -07:00 committed by Alexandre Julliard
parent f974facf5a
commit 9825ac7a1a
1 changed files with 23 additions and 2 deletions
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25
tools/widl/typegen.c
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@ -228,6 +228,22 @@ static const char *get_context_handle_type_name(const type_t *type)
return NULL;
}
/* This is actually fairly involved to implement precisely, due to the
effects attributes may have and things like that. Right now this is
only used for optimization, so just check for a very small set of
criteria that guarantee the types are equivalent; assume every thing
else is different. */
static int compare_type(const type_t *a, const type_t *b)
{
if (a == b
|| (a->name
&& b->name
&& strcmp(a->name, b->name) == 0))
return 0;
/* Ordering doesn't need to be implemented yet. */
return 1;
}
static int compare_expr(const expr_t *a, const expr_t *b)
{
int ret;
@ -265,12 +281,17 @@ static int compare_expr(const expr_t *a, const expr_t *b)
if (ret != 0)
return ret;
return compare_expr(a->u.ext, b->u.ext);
case EXPR_CAST:
ret = compare_type(a->u.tref, b->u.tref);
if (ret != 0)
return ret;
/* Fall through. */
case EXPR_NOT:
case EXPR_NEG:
case EXPR_PPTR:
case EXPR_CAST:
case EXPR_SIZEOF:
return compare_expr(a->ref, b->ref);
case EXPR_SIZEOF:
return compare_type(a->u.tref, b->u.tref);
case EXPR_VOID:
return 0;
}