Implicit function declarations in C can have unexpected results. We should make -Wimplicit-function-declaration an error. This warning is important since WiredTiger is written in C is compiled with different settings depending on when it is compiled in mongo vs standalone.
Example warnings from the solaris builder:
[2016/03/31 13:35:08.113] src/third_party/wiredtiger/src/os_posix/os_alloc.c: In function '__wt_realloc_aligned': [2016/03/31 13:35:08.113] src/third_party/wiredtiger/src/os_posix/os_alloc.c:221:3: warning: implicit declaration of function 'posix_memalign' [-Wimplicit-function-declaration] [2016/03/31 13:35:08.113] if ((ret = posix_memalign(&newp, [2016/03/31 13:35:08.113] ^ [2016/03/31 13:35:09.876] src/third_party/wiredtiger/src/os_posix/os_stdio.c: In function '__wt_fclose': [2016/03/31 13:35:09.876] src/third_party/wiredtiger/src/os_posix/os_stdio.c:117:3: warning: implicit declaration of function 'fileno' [-Wimplicit-function-declaration] [2016/03/31 13:35:09.876] if (fsync(fileno(fp)) != 0) [2016/03/31 13:35:09.876] [2016/03/31 13:35:10.095] src/third_party/wiredtiger/src/os_posix/os_time.c: In function '__wt_epoch': [2016/03/31 13:35:10.095] src/third_party/wiredtiger/src/os_posix/os_time.c:21:2: warning: implicit declaration of function 'clock_gettime' [-Wimplicit-function-declaration] [2016/03/31 13:35:10.095] WT_SYSCALL_RETRY(clock_gettime(CLOCK_REALTIME, tsp), ret); [2016/03/31 13:35:10.095]
- is depended on by
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WT-2330 in-memory configurations should not create on-disk collection files
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- Closed
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