Piotr Caban (@piotr) commented about dlls/msvcp140/tests/msvcp140.c:
void *tail;
} critical_section;
-typedef struct -{ +typedef union {
- critical_section conc;
- SRWLOCK win;
+} cs;
+typedef struct { DWORD flags;
- critical_section cs; ULONG_PTR unknown;
Please initialize `unknown` in `_Mtx_init_in_situ`. Otherwise the tests may randomly fail accessing uninitialized value.