[Bug jit/101942] New: many jit test failures (test-accessing-bitfield.c.exe et al.)

[Bug jit/101942] New: many jit test failures (test-accessing-bitfield.c.exe et al.)

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101942

            Bug ID: 101942
           Summary: many jit test failures (test-accessing-bitfield.c.exe
                    et al.)
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: jit
          Assignee: dmalcolm at gcc dot gnu.org
          Reporter: msebor at gcc dot gnu.org
  Target Milestone: ---

A regression test run with today's top of trunk shows failures in the following
JIT tests:

!  FAIL: jit.dg/test-compile-to-assembler.c, (1: +1)
!  FAIL: jit.dg/test-compile-to-object.c, (1: +1)
!  FAIL: output-of-test-compile-to-assembler.c.s (1: +1)
!  FAIL: output-of-test-compile-to-dynamic-library.c.so (1: +1)
!  FAIL: output-of-test-compile-to-executable.c.exe (2: +2)
!  FAIL: output-of-test-compile-to-object.c.o (1: +1)
!  FAIL: test-accessing-bitfield.c.exe (1: +1)
!  FAIL: test-accessing-struct.c.exe (1: +1)
!  FAIL: test-accessing-union.c.exe (1: +1)
!  FAIL: test-alignment.cc.exe (1: +1)
!  FAIL: test-alignment.c.exe (1: +1)
!  FAIL: test-arith-overflow.c.exe (1: +1)
!  FAIL: test-array-as-pointer.c.exe (1: +1)
!  FAIL: test-arrays.c.exe (1: +1)
!  FAIL: test-asm.cc.exe (1: +1)
!  FAIL: test-asm.c.exe (1: +1)
!  FAIL: test-autovectorize.c.exe (1: +1)
!  FAIL: test-benchmark.c.exe (1: +1)
!  FAIL: test-builtin-memcpy.c.exe (1: +1)
!  FAIL: test-builtin-unreachable.c.exe (1: +1)
!  FAIL: test-calling-external-function.c.exe (1: +1)
!  FAIL: test-calling-function-ptr.c.exe (1: +1)
!  FAIL: test-cast.c.exe (1: +1)
!  FAIL: test-combination.c.exe (1: +1)
!  FAIL: test-compile-to-assembler.c.exe (1: +1)
!  FAIL: test-compile-to-dynamic-library.c.exe (1: +1)
!  FAIL: test-compile-to-executable.c.exe (1: +1)
!  FAIL: test-compile-to-object.c.exe (1: +1)
!  FAIL: test-compound-assignment.c.exe (1: +1)
!  FAIL: test-constants.c.exe (1: +1)
!  FAIL: test-debug-strings.c.exe (1: +1)
!  FAIL: test-dot-product.c.exe (1: +1)
!  FAIL: test-empty.c.exe (1: +1)
!  FAIL: test-error-array-bounds.c.exe (1: +1)
!  FAIL: test-error-gcc_jit_context_new_bitfield-invalid-width.c.exe (1: +1)
!  FAIL: test-error-gcc_jit_lvalue_get_address-bitfield.c.exe (1: +1)
!  FAIL: test-error-gcc_jit_timer_pop-mismatch.c.exe (1: +1)
!  FAIL: test-error-gcc_jit_timer_pop-too-many.c.exe (1: +1)
!  FAIL: test-error-impossible-must-tail-call.c.exe (1: +1)
!  FAIL: test-error-pr63969-missing-driver.c.exe (1: +1)
!  FAIL: test-error-unrecognized-dump.c.exe (1: +1)
!  FAIL: test-expressions.c.exe (1: +1)
!  FAIL: test-factorial-must-tail-call.c.exe (1: +1)
!  FAIL: test-fibonacci.c.exe (1: +1)
!  FAIL: test-functions.c.exe (1: +1)
!  FAIL: test-global-set-initializer.c.exe (1: +1)
!  FAIL: test-linked-list.c.exe (1: +1)
!  FAIL: test-long-names.c.exe (1: +1)
!  FAIL: test-long-string-literal.c.exe (1: +1)
!  FAIL: test-nested-contexts.c.exe (1: +1)
!  FAIL: test-nested-loops.c.exe (1: +1)
!  FAIL: test-operator-overloading.cc.exe (1: +1)
!  FAIL: test-pr66700-observing-write-through-ptr.c.exe (1: +1)
!  FAIL: test-pr66779.c.exe (1: +1)
!  FAIL: test-pr95306-builtin-types.c.exe (1: +1)
!  FAIL: test-pr95314-rvalue-reuse.c.exe (1: +1)
!  FAIL: test-quadratic.cc.exe (1: +1)
!  FAIL: test-quadratic.c.exe (1: +1)
!  FAIL: test-returning-function-ptr.c.exe (1: +1)
!  FAIL: test-string-literal.c.exe (1: +1)
!  FAIL: test-sum-of-squares.c.exe (1: +1)
!  FAIL: test-switch.cc.exe (1: +1)
!  FAIL: test-switch.c.exe (1: +1)
!  FAIL: test-threads.c.exe (1: +1)
!  FAIL: test-trap.c.exe (1: +1)
!  FAIL: test-types.c.exe (1: +1)
!  FAIL: test-using-global.c.exe (1: +1)
!  FAIL: test-validly-unreachable-block.c.exe (1: +1)
!  FAIL: test-vector-rvalues.cc.exe (1: +1)
!  FAIL: test-vector-types.cc.exe (1: +1)
!  FAIL: test-version.c.exe (1: +1)
!  FAIL: test-volatile.c.exe (1: +1)
!  FAIL: verify-dynamic-library.c.exe (1: +1)

Most fail with a SEGV:

FAIL: test-accessing-bitfield.c.exe killed: 29762 exp6 0 0 CHILDKILLED SIGSEGV
{segmentation violation}

[Bug jit/101942] many jit test failures (test-accessing-bitfield.c.exe et al.)

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101942

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
                 CC|                            |marxin at gcc dot gnu.org
   Last reconfirmed|                            |2021-08-17
             Status|UNCONFIRMED                 |WAITING

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Can't reproduce that for the current master. Please post what exactly fails in
the tests..

[Bug jit/101942] many jit test failures (test-accessing-bitfield.c.exe et al.)

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101942

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Never mind.  It was caused by an uninitialized variable introduced by a change
in my tree and for some reason only caught by the JIT tests and none others. 
Sorry about that!