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Add warning for size_of(&x) expressions

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Franz
2026-01-14 00:43:06 +01:00
parent 9d72025a0b
commit c64fad8ef7
1 changed files with 10 additions and 0 deletions
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10
src/check_builtin.cpp
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@@ -2695,6 +2695,16 @@ gb_internal bool check_builtin_procedure(CheckerContext *c, Operand *operand, As
case BuiltinProc_size_of: {
// size_of :: proc(Type or expr) -> untyped int
if (ce->args[0]->kind == Ast_UnaryExpr) {
ast_node(arg, UnaryExpr, ce->args[0]);
if (arg->op.kind == Token_And) {
ERROR_BLOCK();
warning(ce->args[0], "'size_of(&x)' returns the size of a pointer, not the size of x");
error_line("\tSuggestion: Use 'size_of(rawptr)' if you want the size of the pointer");
}
}
Operand o = {};
check_expr_or_type(c, &o, ce->args[0]);
if (o.mode == Addressing_Invalid) {