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myisamchk bogus error for files larger than 4G

Description

Was reported by SkySQL folks, in the upgrade context.

What happens is that : my_copystat() function that is called near the end of myisamchk, calls stat(), which , on Windows, with Visual Studio 2010, returns an error on files larger than 4G (the struct stat is an ancient one , with 32bit st_size ).

Ironically, returning an error instead of truncated size is a bugfix introduced in SDK from VS2010 upwards, and was not seen in earlier versions of C runtime library.

There are variations of stat() (stat64, stati64) that can handle large files correctly. my_stat() behavior is correct, because it is using stat64.

Environment

Windows, VS2010

Status

Assignee

Vladislav Vaintroub

Reporter

Vladislav Vaintroub

Fix versions

Affects versions

5.5.28
5.5.28a
5.3.11
5.2.13
5.1.66

Priority

Major