test-getgroups.c:stringop-overflow warning on newer GCC

Newer GCC complains about this test: $ make test-getgroups.o V=1 depbase=`echo test-getgroups.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\ gcc -DHAVE_CONFIG_H -DEXEEXT=\"\" -I. -I.. -DIN_FINDUTILS_GNULIB_TESTS=1 -I. -I. -I.. -I./.. -I../gl/lib -I./.. \ /gl/lib -g -O2 -MT test-getgroups.o

Re: test-getgroups.c:stringop-overflow warning on newer GCC

Hi Berny, Bernhard Voelker wrote in : > Newer GCC complains about this test: > > $ make test-getgroups.o V=1 > depbase=`echo test-getgroups.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\ > gcc -DHAVE_CONFIG_H -DEXEEXT=\"\" -I. -I

Re: test-getgroups.c:stringop-overflow warning on newer GCC

Hi Bruno, On 1/1/21 1:56 PM, Bruno Haible wrote: > Hi Berny, > > Bernhard Voelker wrote in > : >> Newer GCC complains about this test: >> >> $ make test-getgroups.o V=1 >> depbase=`echo test-getgroups.o | sed 's|[^/]*$|.deps

Re: test-getgroups.c:stringop-overflow warning on newer GCC

Hi Berny, > So it may be an issue with the 10.2.1 version > ... > I'm not sure how to proceed from here. The most interesting piece of information is the rationale of this warning (i.e. more precisely why the warning is enabled by default). Maybe it can be found in the set of patches of this GCC

Re: test-getgroups.c:stringop-overflow warning on newer GCC

Hi Bruno, On 1/2/21 2:59 AM, Bruno Haible wrote: > Hi Berny, > >> So it may be an issue with the 10.2.1 version >> ... >> I'm not sure how to proceed from here. > > The most interesting piece of information is the rationale of this > warning (i.e. more precisely why the warning is enabled by def

Re: test-getgroups.c:stringop-overflow warning on newer GCC

On 1/1/21 6:30 PM, Bernhard Voelker wrote: As I see the same on Fedora, the issue seems to be upstream, doesn't it? I see the problem on Fedora 33 as well. It doesn't appear to be a GCC bug. unistd.h's declaration expands to this: extern int getgroups (int __size, __gid_t __list[]) __attribu

Re: test-getgroups.c:stringop-overflow warning on newer GCC

Paul Eggert wrote: > I see the problem on Fedora 33 as well. It doesn't appear to be a GCC > bug. unistd.h's declaration expands to this: > > extern int getgroups (int __size, __gid_t __list[]) __attribute__ > ((__nothrow__, __leaf__)) __attribute__ ((__access__ (__write_only__, 2, > 1))); > >

Re: test-getgroups.c:stringop-overflow warning on newer GCC

On 1/2/21 1:51 PM, Bruno Haible wrote: > 2021-01-02 Bruno Haible > > getgroups test: Avoid warning with glibc >= 2.32 and gcc >= 10. Thanks, works. Have a nice day, Berny