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translate-c: Fix for compound assign implicit cast error

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february cozzocrea 2024-01-16 07:57:31 -08:00 committed by GitHub
parent 195eeed2d8
commit 50457482b1
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2 changed files with 25 additions and 9 deletions
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14
src/translate_c.zig
View File

@ -3807,11 +3807,7 @@ fn transCreateCompoundAssign(
const rhs_qt = getExprQualType(c, rhs);
const is_signed = cIsSignedInteger(lhs_qt);
const is_ptr_op_signed = qualTypeIsPtr(lhs_qt) and cIsSignedInteger(rhs_qt);
const requires_int_cast = blk: {
const are_integers = cIsInteger(lhs_qt) and cIsInteger(rhs_qt);
const are_same_sign = cIsSignedInteger(lhs_qt) == cIsSignedInteger(rhs_qt);
break :blk are_integers and !(are_same_sign and cIntTypeCmp(lhs_qt, rhs_qt) == .eq);
};
const requires_cast = !lhs_qt.eq(rhs_qt) and !is_ptr_op_signed;
if (used == .unused) {
// common case
@ -3822,7 +3818,7 @@ fn transCreateCompoundAssign(
if (is_ptr_op_signed) rhs_node = try usizeCastForWrappingPtrArithmetic(c.arena, rhs_node);
if ((is_mod or is_div) and is_signed) {
if (requires_int_cast) rhs_node = try transCCast(c, scope, loc, lhs_qt, rhs_qt, rhs_node);
if (requires_cast) rhs_node = try transCCast(c, scope, loc, lhs_qt, rhs_qt, rhs_node);
const operands = .{ .lhs = lhs_node, .rhs = rhs_node };
const builtin = if (is_mod)
try Tag.signed_remainder.create(c.arena, operands)
@ -3834,7 +3830,7 @@ fn transCreateCompoundAssign(
if (is_shift) {
rhs_node = try Tag.int_cast.create(c.arena, rhs_node);
} else if (requires_int_cast) {
} else if (requires_cast) {
rhs_node = try transCCast(c, scope, loc, lhs_qt, rhs_qt, rhs_node);
}
return transCreateNodeInfixOp(c, op, lhs_node, rhs_node, .used);
@ -3861,7 +3857,7 @@ fn transCreateCompoundAssign(
var rhs_node = try transExpr(c, &block_scope.base, rhs, .used);
if (is_ptr_op_signed) rhs_node = try usizeCastForWrappingPtrArithmetic(c.arena, rhs_node);
if ((is_mod or is_div) and is_signed) {
if (requires_int_cast) rhs_node = try transCCast(c, scope, loc, lhs_qt, rhs_qt, rhs_node);
if (requires_cast) rhs_node = try transCCast(c, scope, loc, lhs_qt, rhs_qt, rhs_node);
const operands = .{ .lhs = ref_node, .rhs = rhs_node };
const builtin = if (is_mod)
try Tag.signed_remainder.create(c.arena, operands)
@ -3873,7 +3869,7 @@ fn transCreateCompoundAssign(
} else {
if (is_shift) {
rhs_node = try Tag.int_cast.create(c.arena, rhs_node);
} else if (requires_int_cast) {
} else if (requires_cast) {
rhs_node = try transCCast(c, &block_scope.base, loc, lhs_qt, rhs_qt, rhs_node);
}

20
test/cases/run_translated_c/compound_assignments_with_implicit_casts.c Normal file
View File

@ -0,0 +1,20 @@
int main() {
int i = 2;
float f = 3.2f;
i += 1.7;
if (i != 3) return 1;
i += f;
if (i != 6) return 2;
f += 2UL;
if (f <= 5.1999 || f >= 5.2001) return 3;
f += i;
if (f <= 11.1999 || f >= 11.2001) return 4;
return 0;
}
// run-translated-c
// c_frontends=aro,clang