--- tests/aeadtest.c.orig Sat Jan 26 12:39:05 2019 +++ tests/aeadtest.c Fri Sep 4 04:04:26 2020 @@ -79,6 +79,12 @@ #define BUF_MAX 1024 +#ifdef _MSC_VER +#ifdef IN +#undef IN +#endif +#endif + /* These are the different types of line that are found in the input file. */ enum { AEAD = 0, /* name of the AEAD algorithm. */