https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99814
Bug ID: 99814 Summary: regexec fails with -fsanitize=address Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: sanitizer Assignee: unassigned at gcc dot gnu.org Reporter: stefansf at linux dot ibm.com CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org, jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at gcc dot gnu.org Target Milestone: --- Target: s390x Testing against today's commit https://gcc.gnu.org/g:d579e2e76f9469e1b386d693af57c5c4f0ede410 on s390x we have: $ gcc pr98920.c -fsanitize=address && ./a.out failed to match The testcase succeeds without `-fsanitize=address`. In GDB I see that the address loaded from _ZN14__interception12real_regexecE equals the address of regexec@GLIBC_2.2 which explains why the testcase fails. Without `-fsanitize=address` function regexec@@GLIBC_2.3.4 is executed.