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[qfcc] Do type promotions for conditional expressions

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Where possible of course, but the two results need to have the same
type. When not possible, an error is generated.
This commit is contained in:
Bill Currie 2025-01-20 10:17:01 +09:00
parent b1389ddb79
commit 332c991064
1 changed files with 11 additions and 0 deletions
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11
tools/qfcc/source/expr_process.c
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@ -620,6 +620,17 @@ proc_cond (const expr_t *expr, rua_ctx_t *ctx)
if (is_error (false_expr)) {
return false_expr;
}
auto true_type = get_type (true_expr);
auto false_type = get_type (false_expr);
if (!type_same (true_type, false_type)) {
if (type_promotes (true_type, false_type)) {
false_expr = cast_expr (true_type, false_expr);
} else if (type_promotes (false_type, true_type)) {
true_expr = cast_expr (false_type, true_expr);
} else {
return error (expr, "incompatible types in conditional expression");
}
}
return new_cond_expr (test, true_expr, false_expr);
}