On Wed, Apr 5, 2017 at 1:19 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Peter Eisentraut <peter.eisentraut@2ndquadrant.com> writes:
>> On 4/5/17 12:04, Tom Lane wrote:
>>> Conclusion: Fedora's gcc is playing fast and loose somehow with the
>>> command "#include <stdbool.h>"; that does not include the file
>>> you'd think it does, it does something magic inside the compiler.
>>> The magic evidently includes not complaining about duplicate macro
>>> definitions for true and false.
>
>> Perhaps -Wsystem-headers would change the outcome in your case.
>
> Hah, you're right: with that,
>
> In file included from /usr/include/selinux/label.h:9:0,
> from label.c:40:
> /usr/lib/gcc/x86_64-redhat-linux/6.3.1/include/stdbool.h:34:0: warning: "true" redefined
> #define true 1
>
> In file included from ../../src/include/postgres.h:47:0,
> from label.c:11:
> ../../src/include/c.h:206:0: note: this is the location of the previous definition
> #define true ((bool) 1)
>
> and likewise for "false". So that mystery is explained.
>
> I stand by my previous patch suggestion, except that we can replace
> the parenthetical comment with something like "(We don't care if
> <stdbool.h> redefines "true"/"false"; those are close enough.)".
>
Sounds good. Updated patchset will include that verbiage, along with
some regression tests for partitioned tables.
Thanks,
--
Mike Palmiotto
Software Engineer
Crunchy Data Solutions
https://crunchydata.com
