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The requested length is too int

The type long is problematic in C, because its exact type is not defined, and practically it can be either 32-bit or 64-bit on common platforms. Sometimes people will do a mass search-and-replace to change all variables declared as long to int in order to fix portability issues. If you do this, you need to make sure you check the diffs or you will end up publishing something nonsensical:

This function returns status values as follows:

    CBS_INVARG  requested file name length is too int


This blog was originally open for comments when this entry was first posted, but was later closed and then removed due to spam and after a migration away from the original blog software. Unfortunately, it would have been a lot of work to reformat the comments to republish them. The author thanks everyone who posted comments and added to the discussion.