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Disable negation of unsigned constants (Issue: #145)

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gingerBill
2017-11-15 21:25:16 +00:00
parent 9bd8bdaa5a
commit e48346a9ee
2 changed files with 7 additions and 1 deletions
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core/decimal.odin
-1
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@@ -1,4 +1,3 @@
// #import "fmt.odin";
// Multiple precision decimal numbers // Multiple precision decimal numbers
// NOTE: This is only for floating point printing and nothing else // NOTE: This is only for floating point printing and nothing else
src/check_expr.cpp
+7
View File
@@ -1494,6 +1494,13 @@ void check_unary_expr(Checker *c, Operand *o, Token op, AstNode *node) {
o->mode = Addressing_Invalid; o->mode = Addressing_Invalid;
return; return;
} }
if (op.kind == Token_Sub && is_type_unsigned(type)) {
gbString err_str = expr_to_string(node);
error(op, "A unsigned constant cannot be negated '%s'", err_str);
gb_string_free(err_str);
o->mode = Addressing_Invalid;
return;
}
o->value = exact_unary_operator_value(op.kind, o->value, precision); o->value = exact_unary_operator_value(op.kind, o->value, precision);