This can sometime fail to evaluate properly

[rjonkman]

USBHost_t36/MassStorageDriver.cpp

Line 429 in 69b9072

if(StatusBlockWrapper.Tag != CBWTag) return msProcessError(MS_CSW_TAG_ERROR); // Tag mismatch error

The is probably a compiler optimization issue. Sometimes StatusBlockWrapper.Tag will evalute to 0 eventhough it's been updated in the background. Surpisingly declaring StatusBlockWrapper as volatile doesn't resolve the issue. I used the following hack just before the reference line of code to force the program to reread the value of StatusBlockWrapper.Tag.

char str[50];
sprintf(str, "%d", (int)StatusBlockWrapper.Tag);