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sunday project, gdb, 2003-09-11


. Dedication

  The 2003-09-11 report is dedicated to FDNY.
  Wanna help out?  Give blood.  Anywhere in the world helps.

. Highlights of this report

  gcc 5.3.91 and gcc gcc_6_0-branch are healthy.

  gcc HEAD enabled function-at-a-time with -O2.  Unfortunately, gdb has
  very little coverage of -O2, so I have little test coverage for this.
  I did find one gcc bug already with gdb.base/break.exp.

  There is a mystery FAIL in gdb.cp/m-data.exp with gcc HEAD.
  It feels like a disconnect between gcc HEAD and binutils 2.14.
  Binutils HEAD works fine.

Michael C

. Old Bugs Fixed

  . gcc HEAD

    http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12204
    [regression] gcc emits bogus .file when __inline__ called

      Someone fixed this bug in gcc HEAD.
      I don't know exactly what patch did the job.

  . gdb gdb_6_0-branch

      Someone, either Andrew C or Daniel J, fixed two bugs which
      affected store.exp.

. New Bugs Detected

  . gcc HEAD

    http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12267
    [3.4 regression] function-at-a-time generates stabs in bad order

      gcc HEAD flipped the switch and does function-at-a-time
      whenever -O2 is specified.  This generates bad stabs for
      "factorial" in the middle of the epilog of "main" in
      gdb.base/break.exp.

. PR Count

  Query executed 2003-09-12 19:53:30 UTC

  1374 matches found
    22 analyzed
   615 closed
    27 feedback
   696 open
     3 paperwork
    11 suspended
  1374 TOTAL

. Libiberty Testing

  . target=native, host=i686-pc-linux-gnu, osversion=red-hat-8.0, libc=2.2.93-5-rh
      binutils HEAD                                      714 tests, 31 failures
      gcc 2.95.3, binutils HEAD                          All 616 tests passed
      gcc 3.3.1, binutils HEAD                           649 tests, 0 failures
      gcc gcc-3_3-branch, binutils 2.14                  649 tests, 0 failures
      gcc gcc-3_3-branch, binutils HEAD                  649 tests, 0 failures
      gcc gcc-3_3-branch, binutils vendor                649 tests, 0 failures
      gcc HEAD, binutils 2.14                            714 tests, 31 failures
      gcc HEAD, binutils HEAD                            714 tests, 31 failures
      gcc HEAD, binutils vendor                          714 tests, 31 failures
      gdb carlton_dictionary-branch                      714 tests, 31 failures
      gdb gdb_6_0-branch                                 649 tests, 0 failures
      gdb HEAD                                           714 tests, 31 failures

    These are long-standing demangler bugs.

      http://gcc.gnu.org/bugzilla/show_bug.cgi?id=7986
      Problems with demangling (__cxa_demangle())

      http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11028
      The standalone C++ demangler doesn't work on some symbols

    A libiberty log is available at

      http://gcc.gnu.org/ml/gcc/2003-07/msg00032.html

. Gdb Testing

  My tables are at

    http://www.shout.net/~mec/sunday/2003-09-11/index.html

  The previous tables are at

    http://www.shout.net/~mec/sunday/2003-09-05/index.html

  . Non-PASS Results

    gdb 5.3             410 non-PASS results
    gdb 5.3.91          406 non-PASS results
    gdb gdb_6_0-branch  403 non-PASS results
    gdb HEAD            436 non-PASS results

  . 5.3

    . gdb.base/break.exp: run until function breakpoint, optimized file
        PASS -> FAIL

        This is a regression with "gcc HEAD -gstabs+ -g2 -O2".

          http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12267
          [3.4 regression] function-at-a-time generates stabs in bad order

        gcc HEAD flipped the switch and does function-at-a-time
        whenever -O2 is specified.  This generates bad stabs for
        "factorial" in the middle of the epilog of "main" in
        gdb.base/break.exp.

    . gdb.c++/annota2.exp: annotate-quit

        http://sources.redhat.com/gdb/bugs/544
        gdb.c++/annota2.exp: annotate-quit test sometimes fails

        Fluctuation in test result probably due to a signal handling
        race in the command loop.

    . gdb.threads/killed.exp: GDB exits after multi-threaded program exits messily

        http://sources.redhat.com/gdb/bugs/568
        GDB confused by messily-exiting multi-threaded programs

        Jim B thinks that this test may depend on a race condition:

          http://sources.redhat.com/ml/gdb-testers/2002-q4/msg00010.html

    . gdb.threads/schedlock.exp: *

        This test script is useless in this release because of a
        signed-versus-unsigned bug.

        Daniel J has an obvious fix, which has been applied to gdb HEAD:

          http://sources.redhat.com/ml/gdb-patches/2002-10/msg00454.html

  . gdb 5.3.91

    . gdb.base/break.exp: run until function breakpoint, optimized file
        PASS -> FAIL

        Same analysis as gdb 5.3.

    . gdb.base/fileio.exp: *
        FAIL -> PASS

        Someone fixed a bug in gcc HEAD.

          http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12204
          [regression] gcc emits bogus .file when __inline__ called

    . gdb.cp/annota3.exp: annotate-quit

        Same analysis as gdb 5.3.

    . gdb.cp/m-data.exp: continue to breakpoint: continue to shadow breakpoint
        PASS -> FAIL

        This test regressed with gcc HEAD -gstabs+ with binutils 2.14
        and binutils 2.13.90.0.2-rh.  This test continued to work fine
        with gcc HEAD -gstabs+ with binutils HEAD.

        Here are gdb.log excerpts:

          # gcc HEAD, binutils 2.14, -gstabs+
          (gdb) PASS: gdb.cp/m-data.exp: template object, derived enum
          break C::marker^M
          Breakpoint 3 at 0x8049b1d^M
          (gdb) continue^M
          Continuing.^M
          ^M
          Breakpoint 3, 0x08049b1d in C::marker() (this=0xbffff78c)^M
          (gdb) FAIL: gdb.cp/m-data.exp: continue to breakpoint: continue to shadow breakpoint

          # gcc HEAD, binutils HEAD, -gstabs+
          (gdb) PASS: gdb.cp/m-data.exp: template object, derived enum
          break C::marker^M
          Breakpoint 3 at 0x8049a9d: file /berman/migchain/source/gdb-5.3.91/gdb/testsuite
          /gdb.cp/m-data.cc, line 49.^M
          (gdb) continue^M
          Continuing.^M
          ^M
          Breakpoint 3, 0x08049a9d in C::marker() (this=0xbffff78c) at /berman/migchain/source/gdb-5.3.91/gdb/testsuite/gdb.cp/m-data.cc:49^M
          49        void marker () {}^M
          (gdb) PASS: gdb.cp/m-data.exp: continue to breakpoint: continue to shadow breakpoint

        The first configuration FAILed because gdb did not print file
        and line number information for the breakpoint at C::marker.

        This FAIL could use more attention, but I am out of attention.

    . gdb.mi/mi-pthreads.exp: check mi_thread_command_set: -thread-select 3
      gdb.mi/mi-pthreads.exp: check mi_thread_command_set: -thread-select 4
      gdb.mi/mi-pthreads.exp: check mi_thread_command_set: -thread-select 5
      gdb.mi/mi-pthreads.exp: check mi_thread_command_set: -thread-select 6
      gdb.mi1/mi-pthreads.exp: check mi_thread_command_set: -thread-select 4
      gdb.mi1/mi-pthreads.exp: check mi_thread_command_set: -thread-select 5
      gdb.mi1/mi-pthreads.exp: check mi_thread_command_set: -thread-select 6
      gdb.mi2/mi-pthreads.exp: check mi_thread_command_set: -thread-select 6
        blank -> PASS
        PASS -> blank

        Fluctuation with unknown cause.  Probably harmless.

    . gdb.threads/print-threads.exp: Hit thread_function breakpoint, 5 (slow with kill breakpoint)
        blank -> PASS

        Fluctuation with unknown cause.  Probably harmless.

    . gdb.threads/schedlock.exp: *
        PASS
      gdb.threads/schedlock.exp: thread 0 ran (didn't run)
      gdb.threads/schedlock.exp: thread 1 ran (didn't run)
      gdb.threads/schedlock.exp: thread 2 ran (didn't run)
      gdb.threads/schedlock.exp: thread 3 ran (didn't run)
      gdb.threads/schedlock.exp: thread 4 ran (didn't run)
      gdb.threads/schedlock.exp: thread 5 ran (didn't run)
        PASS
        FAIL

        All tests PASSed in all configurations except for the
        "thread N ran" tests.  Here are the counts per thread.

                    PASS  FAIL
          thread 0     0    26
          thread 1    26     0
          thread 2    26     0
          thread 3    26     0
          thread 4    26     0
          thread 5    26     0

        That is interesting!  Maybe this is because I exited the
        X window system before I ran these tests.

  . gdb gdb_6_0-branch

    checkout date is '2003-09-11 07:19:23 UTC'
    previous date is '2003-09-05 17:37:31 UTC'

    . gdb.base/break.exp: run until function breakpoint, optimized file
        PASS -> FAIL

        This is a regression with "gcc HEAD -gstabs+ -g2 -O2".

        Same analysis as gdb 5.3.

    . gdb.base/fileio.exp: *
        FAIL -> PASS

        Same analysis as gdb 5.3.91.

    . gdb.base/store.exp: up print new l - int
      gdb.base/store.exp: up print new l - long
      gdb.base/store.exp: up print old l - int
      gdb.base/store.exp: up print old l - long
        FAIL -> PASS

        This happened with gcc 2.95.3 -gdwarf-2.
        Someone, either Andrew C or Daniel J, fixed a bug in gdb.

    . gdb.base/store.exp: up print old r - charest
      gdb.base/store.exp: up print old r - int
      gdb.base/store.exp: up print old r - long
      gdb.base/store.exp: up print old r - short
        FAIL -> PASS

        This happened with gcc 3.x -gdwarf-2.
        Someone, either Andrew C or Daniel J, fixed a bug in gdb.

    . gdb.cp/annota2.exp: annotate-quit
      gdb.cp/annota3.exp: annotate-quit

        Same analysis as gdb 5.3.

    . gdb.cp/m-data.exp: continue to breakpoint: continue to shadow breakpoint
        PASS -> FAIL

        Same analysis as gdb 5.3.91.

    . gdb.java/jmisc.exp: *
        blank -> WARNING
        blank -> UNTESTED
        PASS -> blank
        FAIL -> blank

        This happened in just one configuration.  It is probably just
        a symptom of swapping in my test bed (only 128 megabytes of
        memory).

    . gdb.mi/mi-pthreads.exp: check mi_thread_command_set: -thread-select 3
      gdb.mi/mi-pthreads.exp: check mi_thread_command_set: -thread-select 4
      gdb.mi/mi-pthreads.exp: check mi_thread_command_set: -thread-select 5
      gdb.mi/mi-pthreads.exp: check mi_thread_command_set: -thread-select 6
      gdb.mi1/mi-pthreads.exp: check mi_thread_command_set: -thread-select 4
      gdb.mi1/mi-pthreads.exp: check mi_thread_command_set: -thread-select 5
      gdb.mi1/mi-pthreads.exp: check mi_thread_command_set: -thread-select 6
      gdb.mi2/mi-pthreads.exp: check mi_thread_command_set: -thread-select 3
      gdb.mi2/mi-pthreads.exp: check mi_thread_command_set: -thread-select 4
      gdb.mi2/mi-pthreads.exp: check mi_thread_command_set: -thread-select 5
      gdb.mi2/mi-pthreads.exp: check mi_thread_command_set: -thread-select 6
        PASS -> blank
        blank -> PASS

        Same analysis as gdb 5.3.91.

    . gdb.threads/killed.exp: GDB exits after multi-threaded program exits messily

        Same analysis as gdb 5.3.

    . gdb.threads/print-threads.exp: Hit thread_function breakpoint, 5 (slow with kill breakpoint)
        blank -> PASS

        Same analysis as gdb 5.3.91.

    . gdb.threads/schedlock.exp: *
        PASS
      gdb.threads/schedlock.exp: thread 0 ran (didn't run)
      gdb.threads/schedlock.exp: thread 1 ran (didn't run)
      gdb.threads/schedlock.exp: thread 2 ran (didn't run)
      gdb.threads/schedlock.exp: thread 3 ran (didn't run)
      gdb.threads/schedlock.exp: thread 4 ran (didn't run)
      gdb.threads/schedlock.exp: thread 5 ran (didn't run)
        PASS
        FAIL

        All tests PASSed in all configurations except for the
        "thread N ran" tests.  Here are the counts per thread.

                    PASS  FAIL
          thread 0     4    22
          thread 1    21     5
          thread 2    25     1
          thread 3    25     1
          thread 4    24     2
          thread 5    26     0

  . gdb HEAD

    checkout date is '2003-09-11 07:16:02 UTC'
    previous date is '2003-09-05 16:56:43 UTC'

    . gdb.arch/i386-prologue.exp: saved registers in gdb1253
      gdb.arch/i386-prologue.exp: saved registers in gdb1338
        blank -> PASS

        Mark K wrote some new tests.

    . gdb.base/break.exp: run until function breakpoint, optimized file
        PASS -> FAIL

        Same analysis as gdb 5.3.

    . gdb.base/fileio.exp: *
        FAIL -> PASS

        Same analysis as gdb 5.3.91.

    . gdb.base/gdb1250.exp: *
        blank -> PASS
        ERROR -> blank
        WARNING -> blank
        UNRESOLVED -> blank

        The test program had a function named 'gamma', which is a
        reserved identifier now.  gcc HEAD is okay; the test program was
        wrong.

          http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12213
          [3.4 regression] warning: conflicting types for builtin-function 'gamma'

        Michael C fixed the test program to work with gcc HEAD.

    . gdb.base/gdbvars.exp: Set value-history[1] using $1
        UNRESOLVED -> PASS

        This was a cascade failure from gdb.base/gdb1250.exp.

    . gdb.base/store.exp: up print new l - int
      gdb.base/store.exp: up print new l - long
      gdb.base/store.exp: up print old l - int
      gdb.base/store.exp: up print old l - long
        FAIL -> PASS

        Same analysis as gdb gdb_6_0-branch.

    . gdb.base/store.exp: up print old r - charest
      gdb.base/store.exp: up print old r - int
      gdb.base/store.exp: up print old r - long
      gdb.base/store.exp: up print old r - short
        FAIL -> PASS

        Same analysis as gdb gdb_6_0-branch.

    . gdb.cp/annota2.exp: annotate-quit
      gdb.cp/annota3.exp: annotate-quit

        Same analysis as gdb 5.3.

    . gdb.cp/classes.exp: print (ClassWithEnum::PrivEnum) 42
        FAIL -> KFAIL

        Michael C improved the test.

    . gdb.cp/m-data.exp: continue to breakpoint: continue to shadow breakpoint
        PASS -> FAIL

        Same analysis as gdb 5.3.91.

    . gdb.mi/mi-pthreads.exp: check mi_thread_command_set: -thread-select 3
      gdb.mi/mi-pthreads.exp: check mi_thread_command_set: -thread-select 6
      gdb.mi1/mi-pthreads.exp: check mi_thread_command_set: -thread-select 4
      gdb.mi1/mi-pthreads.exp: check mi_thread_command_set: -thread-select 5
      gdb.mi1/mi-pthreads.exp: check mi_thread_command_set: -thread-select 6
      gdb.mi2/mi-pthreads.exp: check mi_thread_command_set: -thread-select 4
      gdb.mi2/mi-pthreads.exp: check mi_thread_command_set: -thread-select 5
      gdb.mi2/mi-pthreads.exp: check mi_thread_command_set: -thread-select 6
        blank -> PASS
        PASS -> blank

        Same analysis as gdb 5.3.91.

    . gdb.threads/killed.exp: GDB exits after multi-threaded program exits messily

        Same analysis as gdb 5.3.

    . gdb.threads/schedlock.exp: *
        PASS
      gdb.threads/schedlock.exp: thread 0 ran (didn't run)
      gdb.threads/schedlock.exp: thread 1 ran (didn't run)
      gdb.threads/schedlock.exp: thread 2 ran (didn't run)
      gdb.threads/schedlock.exp: thread 3 ran (didn't run)
      gdb.threads/schedlock.exp: thread 4 ran (didn't run)
      gdb.threads/schedlock.exp: thread 5 ran (didn't run)
        PASS
        FAIL

        All tests PASSed in all configurations except for the
        "thread N ran" tests.  Here are the counts per thread.

                    PASS  FAIL
          thread 0     5    21
          thread 1    22     4
          thread 2    25     1
          thread 3    24     2
          thread 4    22     4
          thread 5    26     0

. Test Matrix

  target     => native
  host       => i686-pc-linux-gnu
  osversion  => red-hat-8.0
  gdb        => 5.3, 5.3.91, gdb_6_0-branch, HEAD
  gcc        => 2.95.3, 3.2-7-rh, 3.3.1, gcc-3_3-branch, HEAD
  binutils   => 2.13.90.0.2-rh, 2.14, HEAD
  glibc      => 2.2.93-5-rh
  gformat    => dwarf-2, stabs+
  glevel     => 2
  count         104 = 1 * 1 * 1 * 4 * (4*3+1*1) * 1 * 2 * 1

  'target' and 'host' are gnu configuration triples.

  'osversion' is the host operating system name, which is additional
  information beyond 'host'.

  'gdb', 'gcc', 'binutils', and 'glibc' are version names.

  versions starting with a digit are official releases or snapshots.
  versions starting with a digit and ending with '-rh' are
    vendor-supplied official releases on my red hat linux host.
  versions named 'HEAD' are the cvs HEAD, also known as 'mainline' or 'trunk'.
  versions with any other name are cvs branches.

  'gformat' is the debugging information format.
  'glevel' is the debugging level.

  'count' is the total number of configurations tested.
  The vendor gcc is available only with vendor binutils,
    thus the '(4*3+1*1)' term for gcc/binutils combinations.

. Host Software

  . host=i686-pc-linux-gnu, osversion=red-hat-8.0

    make 3.79.1
    binutils 2.14
    gcc 3.3
    flex 2.5.4
    bison 1.875
    tcl 8.4.4
    expect 5.39
    dejagnu 1.4.3

  The sources.redhat.com cvs repository has its own versions of tcl,
  expect, and dejagnu.  I don't have the resources to test with both
  tcl/expect/dejagnu stacks, so I choose the stock stack for my test
  bed.
  
  The sources.redhat.com version of tcl is nearly identical to tcl
  8.4.1.  The sources.redhat.com version of expect dates from
  1998-06-15.  The sources.redhat.com version of dejagnu is nearly
  identical to dejagnu 1.4.3.

  I have packaged and published my scripts to manage the baseline
  software.  They are called Migchain (Michael's Gnu Toolchain) and
  Migbat (Michael's Gnu Build and Test), and they are licensed under the
  GPL.

    ftp://ftp.shout.net/pub/users/mec/migchain/migchain-0.6.tar.gz
    ftp://ftp.shout.net/pub/users/mec/migbat/migbat-0.6.tar.gz

. Test Bed Changes Since Last Report

  None.


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