On MSYS2 (MinGW64) appstest.sh fails on "verify time stamp response"

[kinichiro]

X509_verify_cert() returns error for self signed certificate, MinGW only.
Cygwin is OK.

[TEST] ts ... verify time stamp response
Verification: FAILED
2587050918:error:2FFFF064:time stamp routines:CRYPTO_internal:
certificate verify error:ts/ts_rsp_verify.c:253:Verify error:self signed certificate
:-< error occurs, exit status = [ 1 ]

Environment.

$ uname -a
MINGW64_NT-6.1 INOGUCHI2 2.6.0(0.304/5/3) 2016-09-07 20:45 x86_64 Msys

[kinichiro]

error message "self signed certificate" is X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT .
in x509_vfy.c, this code sets this error message.

...
	ok = ctx->get_issuer(&xtmp, ctx, x);
	if ((ok <= 0) || X509_cmp(x, xtmp)) {
		ctx->error = X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT;
...

[kinichiro]

I saw X509_cmp() returns -1