[Bug testsuite/114222] New: gcc.c-torture/execute/builtin-bitops-1.c fails for H8/300

[jdx at o2 dot pl]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114222

            Bug ID: 114222
           Summary: gcc.c-torture/execute/builtin-bitops-1.c fails for
                    H8/300
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: testsuite
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jdx at o2 dot pl
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: h8300-elf

Excerpt from gcc.log:
[...]
Executing on host: /home/jdx/testgcc/builddir/gcc/xgcc
-B/home/jdx/testgcc/builddir/gcc/
/home/jdx/testgcc/combosrc/gcc/testsuite/gcc.c-torture/execute/builtin-bitops-1.c
   -fdiagnostics-plain-output    -O0  -w  -isystem
/home/jdx/testgcc/builddir/h8300-elf/./newlib/targ-include -isystem
/home/jdx/testgcc/combosrc/newlib/libc/include -L/home/jdx/testgcc/builddir/ld
-B/home/jdx/testgcc/builddir/h8300-elf/./newlib/
-L/home/jdx/testgcc/builddir/h8300-elf/./newlib  -lm  -o ./builtin-bitops-1.exe
   (timeout = 300)
spawn -ignore SIGHUP /home/jdx/testgcc/builddir/gcc/xgcc
-B/home/jdx/testgcc/builddir/gcc/
/home/jdx/testgcc/combosrc/gcc/testsuite/gcc.c-torture/execute/builtin-bitops-1.c
-fdiagnostics-plain-output -O0 -w -isystem
/home/jdx/testgcc/builddir/h8300-elf/./newlib/targ-include -isystem
/home/jdx/testgcc/combosrc/newlib/libc/include -L/home/jdx/testgcc/builddir/ld
-B/home/jdx/testgcc/builddir/h8300-elf/./newlib/
-L/home/jdx/testgcc/builddir/h8300-elf/./newlib -lm -o ./builtin-bitops-1.exe
PASS: gcc.c-torture/execute/builtin-bitops-1.c   -O0  (test for excess errors)
spawn /home/jdx/testgcc/builddir/sim/h8300/run ./builtin-bitops-1.exe
program stopped with signal 4 (Illegal instruction).
FAIL: gcc.c-torture/execute/builtin-bitops-1.c   -O0  execution test
[...]

Further investigation showed that:
 a) the test case fails at line 181, (most likely) inside __builtin_ffs();
other __builtins work as expected,
 b) it happens when the test case is compiled with default options, i.e. when
ints are 16 bit wide; when -mint32 is added to the options (i.e. ints are 32
bit wide), the test passes.