32-bit MinGW self test failures

[noloader]

It looks like 32-bit MinGW is failing self tests for LEA, SIMON, SPECK and SM4.

An example of a failure is shown below.

Testing SymmetricCipher algorithm SM4/ECB.
.....................
Testing SymmetricCipher algorithm SM4/CBC.
.......................
incorrectly encrypted: 9B195C61B03B3DF17F0A5C36C332A1A8EF265A6EB555E140D3BBF04EA
41B0FF3F333DB0EB42671ED22AF0000371DAA94B1ACD4BB7D5E362BE83A0A75253B529D70FE88FC3
1E4A2E25C525EFFD54AC8CF4F1346C2D68D77F3E7F7DE1575E30B4AEE95D4F9505FACC40925B642C
09160931FB3B5E062DD438DECFBEB005F7BFA6B
AlgorithmType: SymmetricCipher
Ciphertext: 7A97307CB8E9EACD703E6F9B518772AB2C7A0FA3F9FF61FBE8CE0896F10DA287E0CA
E7C276EC9E6713A692908284EEA0420CAC3B35C6D43594605CA637C7520CB6B7759FBE7660167C4C
08B337C4451B85890C3B354382C5721A555777474CDA0E0A82E623FEC9C0645CECD7A7FE7E5F499E
71E49DB83A1540448FC1B84BC06C
Comment: SM4-128(128)
IV: B09B187F7CCE25E94F534F06D8442796
Key: 5458876D02C39DB8458372E89CB3EF27
Name: SM4/CBC
Plaintext: 751579F1BB15910733507A4CC04CF00EAEFC3577EAD165F77F2CDF037B445CA4390B5
6EDF0F3832889828B613A785CA924D3259AD7E664186D2C88C01615B637D0796246AEBBA584AA374
6E10EEF436E73792CFEA40290260AE9BE1CABA919919F5AF3A2F7A2CE67912FD3464A564BF4D4374
895F0CE6AB91851F35A1CB197B9
Source: Botan 2.3 generated
Test: Encrypt

Test FAILED.
Skipping to next test.
......
Tests complete. Total tests = 51. Failed tests = 1.

[noloader]

A retest this week on the same machine did not witness the problem.

I'm beginning to wonder if wires are getting crossed/wrong DLL's being used because I have this many environments:

• Git Bash
• MinGW-32
• MinGW-64
• Cygwin-32
• Cygwin-64

I often see weird failures with Git Bash, like "resource unavailable" when performing a git pull. If I reboot the problem seems to clear itself. The problem seems to get worse when I try to run two or three of the terminals at once.