On 2019/4/25 上午1:45, David Sterba wrote:
> On Wed, Apr 24, 2019 at 03:22:53PM +0800, Qu Wenruo wrote:
>> Allowing error injection for btrfs_check_leaf_full() and
>> btrfs_check_node() is useful to test the failure path of btrfs write
>> time tree check.
>>
>> Signed-off-by: Qu Wenruo <wqu@suse.com>
> 
> Does not compile:
> 
>   CC [M]  fs/btrfs/tests/extent-map-tests.o
> In file included from fs/btrfs/tree-checker.c:18:
> ./include/linux/error-injection.h:15:15: error: unknown type name ‘bool’
>  static inline bool within_error_injection_list(unsigned long addr)
>                ^~~~
> ./include/linux/error-injection.h: In function ‘within_error_injection_list’:
> ./include/linux/error-injection.h:17:9: error: ‘false’ undeclared (first use in this function)
>   return false;
>          ^~~~~
> ./include/linux/error-injection.h:17:9: note: each undeclared identifier is reported only once for each function it appears in
> make[1]: *** [scripts/Makefile.build:275: fs/btrfs/tree-checker.o] Error 1
> make[1]: *** Waiting for unfinished jobs....
> make: *** [Makefile:1737: fs/btrfs/] Error 2

Compiles without problem here using 8.2.1 gcc.

...
  CC [M]  fs/btrfs/check-integrity.o
  CC [M]  fs/btrfs/ref-verify.o
  CC [M]  fs/btrfs/tests/free-space-tests.o
  CC [M]  fs/btrfs/tests/extent-buffer-tests.o
  CC [M]  fs/btrfs/tests/btrfs-tests.o
  CC [M]  fs/btrfs/tests/extent-io-tests.o
  CC [M]  fs/btrfs/tests/inode-tests.o
  CC [M]  fs/btrfs/tests/qgroup-tests.o
  CC [M]  fs/btrfs/tests/free-space-tree-tests.o
  CC [M]  fs/btrfs/tests/extent-map-tests.o
  LD [M]  fs/btrfs/btrfs.o
  Building modules, stage 2.
  MODPOST 1 modules
  CC      fs/btrfs/btrfs.mod.o
  LD [M]  fs/btrfs/btrfs.ko

> 
> 
> gcc is 8.3.1
> 

Upgrading to gcc 8.3.0, still passes.

Is that a regression in gcc 8.3.1?

Thanks,
Qu