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Value: fix null test for c pointers

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This commit is contained in:
Jacob Young 2023-05-31 01:25:02 -04:00 committed by Andrew Kelley
parent 26fac15f48
commit 71c4077c35
1 changed files with 7 additions and 6 deletions
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13
src/value.zig
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@ -2131,19 +2131,20 @@ pub const Value = struct {
}
/// Asserts the value is not undefined and not unreachable.
/// Integer value 0 is considered null because of C pointers.
/// C pointers with an integer value of 0 are also considered null.
pub fn isNull(val: Value, mod: *Module) bool {
return switch (val.toIntern()) {
.undef => unreachable,
.unreachable_value => unreachable,
.null_value => true,
else => return switch (mod.intern_pool.indexToKey(val.toIntern())) {
.undef => unreachable,
.int => {
var buf: BigIntSpace = undefined;
return val.toBigInt(&buf, mod).eqZero();
.ptr => |ptr| switch (ptr.addr) {
.int => {
var buf: BigIntSpace = undefined;
return val.toBigInt(&buf, mod).eqZero();
},
else => false,
},
.opt => |opt| opt.val == .none,
else => false,