Re: spgist rangetypes compiler warning (gcc 7.2.0)

On 11/18/2017 10:40 PM, Tom Lane wrote:
> Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> writes:
>> while compiling on gcc 7.2.0 (on ARM), I got this warning:
>
>> rangetypes_spgist.c: In function 'spg_range_quad_inner_consistent':
>> rangetypes_spgist.c:559:29: warning: comparison between pointer and
>> zero character constant [-Wpointer-compare]
>> if (in->traversalValue != (Datum) 0)
>> ^~
>
> Huh. I wonder why 7.2.1 on Fedora isn't producing that warning.
>

Not sure. Maybe Ubuntu uses different flags (on ARM)? This is what I get
from 'gcc -v' on the machine:

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/7/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
7.2.0-8ubuntu3' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
--enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-7
--program-prefix=arm-linux-gnueabihf- --enable-shared
--enable-linker-build-id --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --libdir=/usr/lib
--enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-libitm --disable-libquadmath --enable-plugin
--enable-default-pie --with-system-zlib --with-target-system-zlib
--enable-objc-gc=auto --enable-multiarch --enable-multilib
--disable-sjlj-exceptions --with-arch=armv7-a --with-fpu=vfpv3-d16
--with-float=hard --with-mode=thumb --disable-werror --enable-multilib
--enable-checking=release --build=arm-linux-gnueabihf
--host=arm-linux-gnueabihf --target=arm-linux-gnueabihf
Thread model: posix
gcc version 7.2.0 (Ubuntu/Linaro 7.2.0-8ubuntu3)

regards

--
Tomas Vondra http://www.2ndQuadrant.com
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