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translate-c: fix meta.cast to ?*c_void

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xackus
2021-04-07 17:30:12 +02:00
committed by Veikka Tuominen
parent d4f61f9842
commit 2d2316f5c0
1 changed files with 7 additions and 2 deletions
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9
lib/std/meta.zig
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@@ -970,12 +970,15 @@ fn castPtr(comptime DestType: type, target: anytype) DestType {
if (source.is_const and !dest.is_const or source.is_volatile and !dest.is_volatile)
return @intToPtr(DestType, @ptrToInt(target))
else if (@typeInfo(dest.child) == .Opaque)
// dest.alignment would error out
return @ptrCast(DestType, target)
else
return @ptrCast(DestType, @alignCast(dest.alignment, target));
}
fn ptrInfo(comptime PtrType: type) TypeInfo.Pointer {
return switch(@typeInfo(PtrType)){
return switch (@typeInfo(PtrType)) {
.Optional => |opt_info| @typeInfo(opt_info.child).Pointer,
.Pointer => |ptr_info| ptr_info,
else => unreachable,
@@ -1010,6 +1013,8 @@ test "std.meta.cast" {
testing.expectEqual(@intToPtr(*u8, 2), cast(*u8, @intToPtr(*const u8, 2)));
testing.expectEqual(@intToPtr(*u8, 2), cast(*u8, @intToPtr(*volatile u8, 2)));
testing.expectEqual(@intToPtr(?*c_void, 2), cast(?*c_void, @intToPtr(*u8, 2)));
}
/// Given a value returns its size as C's sizeof operator would.
@@ -1328,4 +1333,4 @@ test "shuffleVectorIndex" {
testing.expect(shuffleVectorIndex(5, vector_len) == -2);
testing.expect(shuffleVectorIndex(6, vector_len) == -3);
testing.expect(shuffleVectorIndex(7, vector_len) == -4);
}
}