On Wed, 15 Mar 2023, 18:17 Alejandro Colomar via Gcc-help, < gcc-help@xxxxxxxxxxx> wrote: > Hi, > > I'm getting this error while building GCC from the master branch: > > alx@debian:~/src/gnu/gcc/.tmp$ make 'BOOT_CFLAGS=-march=native' bootstrap > [...] > /home/alx/src/gnu/gcc/.tmp/./prev-gcc/xg++ > -B/home/alx/src/gnu/gcc/.tmp/./prev-gcc/ > -B/opt/gnu/gcc/alx/Wusi/1/x86_64-pc-linux-gnu/bin/ -nostdinc++ > -B/home/alx/src/gnu/gcc/.tmp/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs > -B/home/alx/src/gnu/gcc/.tmp/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs > -I/home/alx/src/gnu/gcc/.tmp/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu > -I/home/alx/src/gnu/gcc/.tmp/prev-x86_64-pc-linux-gnu/libstdc++-v3/include > -I/home/alx/src/gnu/gcc/libstdc++-v3/libsupc++ > -L/home/alx/src/gnu/gcc/.tmp/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs > -L/home/alx/src/gnu/gcc/.tmp/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs > -fno-PIE -c -march=native -fno-checking -gtoggle -DIN_GCC > -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall > -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute > -Wconditionally-supported -Woverloaded-virtual -pedantic -Wno-long-long > -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common > -DHAVE_CONFIG_H -I. -I. -I../../gcc -I../../gcc/. -I../../gcc/../include > -I../../gcc/../libcpp/include -I../../gcc/../libcody > -I../../gcc/../libdecnumber -I../../gcc/../libdecnumber/bid > -I../libdecnumber -I../../gcc/../libbacktrace -o opts.o -MT opts.o -MMD > -MP -MF ./.deps/opts.TPo ../../gcc/opts.cc > ../../gcc/opts.cc: In function ‘void print_filtered_help(unsigned int, > unsigned int, unsigned int, unsigned int, gcc_options*, unsigned int)’: > ../../gcc/opts.cc:1685:26: error: ‘ ’ directive output may be truncated > writing 2 bytes into a region of size between 1 and 256 > [-Werror=format-truncation=] > 1685 | "%s %s", help, _(use_diagnosed_msg)); > | ^~ > ../../gcc/opts.cc:1684:22: note: ‘snprintf’ output 3 or more bytes > (assuming 258) into a destination of size 256 > 1684 | snprintf (new_help, sizeof new_help, > | ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ > 1685 | "%s %s", help, _(use_diagnosed_msg)); > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > cc1plus: all warnings being treated as errors > make[3]: *** [Makefile:1152: opts.o] Error 1 > > > My system is Debian Sid, and GCC 12.2.0: > $ gcc --version > gcc (Debian 12.2.0-14) 12.2.0 > Copyright (C) 2022 Free Software Foundation, Inc. > This is free software; see the source for copying conditions. There is NO > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. > > > Is it some known issue? I was trying to test a patch I'm developing, > but I can't even build from master. > --disable-werror should work around it.
