https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77710
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> --- With GCC 7.0.0 20160927 configured with --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=arm-none-eabi I get the expected output (below). I see failures in other tests in the results reported for arm-unknown-linux-gnueabihf below but none in the builtin-sprintf-warn-4.c test: https://gcc.gnu.org/ml/gcc-testresults/2016-09/msg02201.html Can you please check again? /src/gcc/trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-4.c:10:24: warning: writing a terminating nul past the end of the destination [-Wformat-length=] sprintf (dst + 7, "%-s", "1"); ~~^~ /src/gcc/trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-4.c:10:3: note: format output 2 bytes into a destination of size 1 sprintf (dst + 7, "%-s", "1"); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /src/gcc/trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-4.c:22:22: warning: '%-s' directive writing 4 bytes into a region of size 1 [-Wformat-length=] sprintf (dst + 7, "%-s", "abcd"); ^~~ ~~~~~~ /src/gcc/trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-4.c:22:3: note: format output 5 bytes into a destination of size 1 sprintf (dst + 7, "%-s", "abcd"); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
