[Bug tree-optimization/121703] New: [16 Regression] ubsan: load of value 32695, which is not a valid value for type 'internal_fn' in tree-vectorizer.h

[pheeck at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121703

            Bug ID: 121703
           Summary: [16 Regression] ubsan: load of value 32695, which is
                    not a valid value for type 'internal_fn' in
                    tree-vectorizer.h
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pheeck at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-linux
            Target: x86_64-linux

Doing

make check RUNTESTFLAGS='jit.exp=test-threads.c -v'

with an ubsan-instrumented GCC results in

DISCARDED exp6 :
/home/worker/buildworker/tiber-gcc-ubsan/build/gcc/tree-vectorizer.h:276:3:
runtime error: load of value 32695, which is not a valid value for type
'internal_fn'


GCC built with ../src/configure --enable-languages=default,jit,lto,go,d
--enable-host-shared --enable-checking=release --disable-multilib
--with-build-config=bootstrap-ubsan