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[qfcc] Handle pointer dereferences in offset casts

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Offset casts are used heavily in geometric algebra, but doing an offset
cast on a dereferenced pointer (array index) doesn't work well for
assignments. Fixes yet another bug in my test scene :)
This commit is contained in:
Bill Currie 2024-02-20 00:33:34 +09:00
parent 62221b2735
commit 389571cbbe
1 changed files with 9 additions and 1 deletions
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10
tools/qfcc/source/expr_algebra.c
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@ -178,7 +178,15 @@ alias_expr (const type_t *type, const expr_t *e, int offset)
neg = true;
e = neg_expr (e);
}
e = new_offset_alias_expr (type, e, offset);
if (e->type == ex_uexpr && e->expr.op == '.') {
auto offs = new_int_expr (offset);
auto ptr = e->expr.e1;
ptr = offset_pointer_expr (ptr, edag_add_expr (offs));
ptr = cast_expr (pointer_type (type), ptr);
e = unary_expr ('.', ptr);
} else {
e = new_offset_alias_expr (type, e, offset);
}
if (neg) {
e = edag_add_expr (e);
e = neg_expr (e);