Hi, While running your changed tests on Windows, I think I found new failures. Being a bot and all I'm not very good at pattern recognition, so I might be wrong, but could you please double-check? Full results can be found at https://testbot.winehq.org/JobDetails.pl?Key=25415 Your paranoid android. === w1064 (32 bit locale) === locale.c:2562: Test failed: LCMapStringEx should fail with bad locale name locale.c:2563: Test failed: unexpected error code -559038737 locale.c:2654: Test failed: Expected lcid == 0, got 00001000, error -559038737 locale.c:4384: Test failed: IsValidLocaleName should have failed locale.c:4386: Test failed: IsValidLocaleName should have failed locale.c:4769: Test failed: For id 7, expected ret == 4, got 1, error 87 locale.c:4771: Test failed: For id 7, Expected IVC, got '' === w1064 (64 bit locale) === locale.c:2562: Test failed: LCMapStringEx should fail with bad locale name locale.c:2563: Test failed: unexpected error code -559038737 locale.c:2654: Test failed: Expected lcid == 0, got 00001000, error -559038737 locale.c:4384: Test failed: IsValidLocaleName should have failed locale.c:4386: Test failed: IsValidLocaleName should have failed locale.c:4769: Test failed: For id 7, expected ret == 4, got 1, error 87 locale.c:4771: Test failed: For id 7, Expected IVC, got ''