Paul Eggert wrote: > > diffseq.h:424:36: warning: 'fxbest' may be used uninitialized > > [-Wmaybe-uninitialized] > > diffseq.h:431:36: warning: 'bxbest' may be used uninitialized > > [-Wmaybe-uninitialized] > > What platform are you using and how did you configure and build?
To reproduce with gettext: - On a glibc/x86_64 system (Ubuntu 22.04). $ git clone git://git.savannah.gnu.org/gettext.git $ unset GNULIB_SRCDIR $ cd gettext $ ./autopull.sh $ sed -i -e '/pragma GCC diagnostic/d' gnulib/lib/diffseq.h $ ./autogen.sh - On Ubuntu 22.04, the default gcc is version 11.3. $ mkdir build-gcc11 $ cd build-gcc11 $ ../configure CC=gcc CXX=g++ CPPFLAGS=-Wall 2>&1 | tee log1 $ make 2>&1 | tee log2 $ grep warning: log2 ... ../../../gettext-tools/gnulib-lib/diffseq.h:441:36: warning: 'bxbest' may be used uninitialized in this function [-Wmaybe-uninitialized] ../../../gettext-tools/gnulib-lib/diffseq.h:434:36: warning: 'fxbest' may be used uninitialized in this function [-Wmaybe-uninitialized] ... $ cd .. - Put gcc 13.1.0 (built from source) in $PATH. $ mkdir build-gcc13 $ cd build-gcc13 $ ../configure CC=gcc CXX=g++ CPPFLAGS=-Wall 2>&1 | tee log1 $ make 2>&1 | tee log2 $ grep warning: log2 ... ../../../gettext-tools/gnulib-lib/diffseq.h:434:36: warning: 'fxbest' may be used uninitialized [-Wmaybe-uninitialized] ../../../gettext-tools/gnulib-lib/diffseq.h:441:36: warning: 'bxbest' may be used uninitialized [-Wmaybe-uninitialized] ... $ cd .. For diffutils, that was one or two weeks ago; I don't have the details any more. > I'd rather not litter the code with those ifdefs, as they cut into > maintenance effort and could mask real bugs. Sure; but that needs to be balanced against the desire to have a warning-free build. https://lists.gnu.org/archive/html/bug-gnulib/2023-05/msg00119.html Bruno
