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[qfcc] Skip over aliases when checking for blocks

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This fixes the double call to [super init] as tested by ifsuper.r.
This commit is contained in:
Bill Currie 2022-11-12 22:18:36 +09:00
parent 76740d213e
commit 5b202a1733
1 changed files with 17 additions and 6 deletions
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23
tools/qfcc/source/expr_bool.c
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@ -243,23 +243,34 @@ bool_expr (int op, expr_t *label, expr_t *e1, expr_t *e2)
internal_error (e1, 0);
}
static int __attribute__((pure))
has_block_expr (expr_t *e)
{
while (e->type == ex_alias) {
e = e->e.alias.expr;
}
return e->type == ex_block;
}
expr_t *
convert_bool (expr_t *e, int block)
{
expr_t *b;
if (e->type == ex_assign) {
expr_t *src;
expr_t *tst;
if (!e->paren && options.warnings.precedence)
warning (e, "suggest parentheses around assignment "
"used as truth value");
src = e->e.assign.src;
if (src->type == ex_block) {
src = new_temp_def_expr (get_type (src));
tst = e->e.assign.src;
if (has_block_expr (tst) && has_block_expr (e->e.assign.dst)) {
tst = new_temp_def_expr (get_type (tst));
e = new_assign_expr (e->e.assign.dst,
assign_expr (src, e->e.assign.src));
assign_expr (tst, e->e.assign.src));
} else if (has_block_expr (tst)) {
tst = e->e.assign.dst;
}
b = convert_bool (src, 1);
b = convert_bool (tst, 1);
if (b->type == ex_error)
return b;
// insert the assignment into the bool's block