https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113752
Bug ID: 113752 Summary: [14 Regression] warning: ‘%s’ directive writing up to 10218 bytes into a region of size between 0 and 10240 [-Wformat-overflow=] Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: hjl.tools at gmail dot com Target Milestone: --- Created attachment 57315 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57315&action=edit A testcase [hjl@gnu-tgl-2 tmp]$ /usr/gcc-14.0.1-x32-apx/bin/gcc -O3 -S x.i -Wall In file included from tests-mbwc/tst_wctype.c:8: tests-mbwc/tsp_common.c: In function ‘result.constprop.isra’: tests-mbwc/tsp_common.c:55:24: warning: ‘%s’ directive writing up to 10218 bytes into a region of size between 0 and 10240 [-Wformat-overflow=] tests-mbwc/tsp_common.c:55:3: note: ‘sprintf’ output between 18 and 20484 bytes into a destination of size 10256 [hjl@gnu-tgl-2 tmp]$ GCC 13 is OK.