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Fix env_read_header() on Windows

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Commit d6d2638acc broke read
on zero-length files.
This commit is contained in:
Howard Chu 2013-07-12 12:53:35 -07:00
parent 3d46d5502a
commit ba6dfe0bbb
1 changed files with 2 additions and 0 deletions
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2
libraries/liblmdb/mdb.c
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@ -2487,6 +2487,8 @@ mdb_env_read_header(MDB_env *env, MDB_meta *meta)
memset(&ov, 0, sizeof(ov));
ov.Offset = off;
rc = ReadFile(env->me_fd,&pbuf,MDB_PAGESIZE,&len,&ov) ? (int)len : -1;
if (rc == -1 && ErrCode() == ERROR_HANDLE_EOF)
rc = 0;
#else
rc = pread(env->me_fd, &pbuf, MDB_PAGESIZE, off);
#endif