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Add #+feature integer-division-by-zero:<string>

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This commit is contained in:
gingerBill
2025-08-08 10:24:44 +01:00
parent e4a0228a80
commit 991883d0e1
4 changed files with 77 additions and 22 deletions
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15
src/check_expr.cpp
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@@ -129,7 +129,7 @@ gb_internal bool check_is_castable_to(CheckerContext *c, Operand *operand, Type
gb_internal bool is_exact_value_zero(ExactValue const &v);
gb_internal IntegerDivisionByZeroKind check_for_integer_division_by_zero(Ast *node);
gb_internal IntegerDivisionByZeroKind check_for_integer_division_by_zero(CheckerContext *c, Ast *node);
enum LoadDirectiveResult {
LoadDirective_Success = 0,
@@ -4311,7 +4311,7 @@ gb_internal void check_binary_expr(CheckerContext *c, Operand *x, Ast *node, Typ
if (fail) {
if (is_type_integer(x->type) || (x->mode == Addressing_Constant && x->value.kind == ExactValue_Integer)) {
if (check_for_integer_division_by_zero(node) == IntegerDivisionByZero_Zero) {
if (check_for_integer_division_by_zero(c, node) == IntegerDivisionByZero_Zero) {
// Okay
break;
}
@@ -4371,7 +4371,7 @@ gb_internal void check_binary_expr(CheckerContext *c, Operand *x, Ast *node, Typ
match_exact_values(&a, &b);
if (check_for_integer_division_by_zero(node) == IntegerDivisionByZero_Zero &&
if (check_for_integer_division_by_zero(c, node) == IntegerDivisionByZero_Zero &&
b.kind == ExactValue_Integer && big_int_is_zero(&b.value_integer) &&
(op.kind == Token_QuoEq || op.kind == Token_Mod || op.kind == Token_ModMod)) {
if (op.kind == Token_QuoEq) {
@@ -9638,8 +9638,15 @@ gb_internal bool check_for_dynamic_literals(CheckerContext *c, Ast *node, AstCom
return cl->elems.count > 0;
}
gb_internal IntegerDivisionByZeroKind check_for_integer_division_by_zero(Ast *node) {
gb_internal IntegerDivisionByZeroKind check_for_integer_division_by_zero(CheckerContext *c, Ast *node) {
// TODO(bill): per file `#+feature` flags
u64 flags = check_feature_flags(c, node);
if ((flags & OptInFeatureFlag_IntegerDivisionByZero_Trap) != 0) {
return IntegerDivisionByZero_Trap;
}
if ((flags & OptInFeatureFlag_IntegerDivisionByZero_Zero) != 0) {
return IntegerDivisionByZero_Zero;
}
return build_context.integer_division_by_zero_behaviour;
}