https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88780
--- Comment #8 from Marietto <marietto2008 at gmail dot com> --- https://bugs.launchpad.net/ubuntu/+source/gcc-9/+bug/1892475 Il giorno mar 18 ago 2020 alle ore 19:26 msebor at gcc dot gnu.org < gcc-bugzi...@gcc.gnu.org> ha scritto: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88780 > > --- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> --- > (In reply to Marietto from comment #6) > ... > > In function ‘strncpy’, > > inlined from ‘xc_set_cpufreq_gov’ at xc_pm.c:308:5: > > /usr/include/x86_64-linux-gnu/bits/string_fortified.h:106:10: error: > > ‘__builtin_strncpy’ specified bound 16 equals destination size > > [-Werror=stringop-truncation] > > 106 | return __builtin___strncpy_chk (__dest, __src, __len, __bos > (__dest)); > > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > This instance of the warning is most likely unrelated to the one reported > in > comment #0 (to tell for sure we'd need a test case to reproduce it). It > indicates that strncpy is being called with the third argument set to the > size > of the destination array, which leaves the destination unterminated unless > the > source string is shorter. The following articles describe the problem and > the > suggested solutions in detail: > > > https://developers.redhat.com/blog/2018/05/24/detecting-string-truncation-with-gcc-8/ > > https://us-cert.cisa.gov/bsi/articles/knowledge/coding-practices/strncpy-and-strncat > > -- > You are receiving this mail because: > You are on the CC list for the bug.
