contrib/repro_fail

   1 #!/bin/bash -eu
   2 #
   3 # Script to reproduce a test failure from a dejagnu .log file.
   4 #
   5 # Contributed by Diego Novillo <dnovillo@google.com>
   6 #
   7 # Copyright (C) 2011 Free Software Foundation, Inc.
   8 #
   9 # This file is part of GCC.
  10 #
  11 # GCC is free software; you can redistribute it and/or modify
  12 # it under the terms of the GNU General Public License as published by
  13 # the Free Software Foundation; either version 3, or (at your option)
  14 # any later version.
  15 #
  16 # GCC is distributed in the hope that it will be useful,
  17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 # GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with GCC; see the file COPYING.  If not, write to
  23 # the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  24 # Boston, MA 02110-1301, USA.
  25
  26 # This script will search a line starting with 'spawn' that includes the
  27 # pattern you are looking for (typically a source file name).
  28 #
  29 # Once it finds that pattern, it re-executes the whole command
  30 # in the spawn line.  If the pattern matches more than one spawn
  31 # command, it asks which one you want.
  32
  33 if [ $# -lt 2 ] ; then
  34     echo "usage: $0 [--debug|--debug-tui] pattern file.log [additional-args]"
  35     echo
  36     echo "Finds the 'spawn' line matching PATTERN in FILE.LOG and executes"
  37     echo "the command with any arguments in ADDITIONAL-ARGS."
  38     echo
  39     echo "If --debug is used, the compiler is invoked with -wrapper gdb,--args"
  40     echo "If --debug-tui is used, the compiler is invoked with -wrapper "\
  41          "gdb,--tui,--args"
  42     exit 1
  43 fi
  44
  45 if [ "$1" == "--debug" ] ; then
  46     debug_args="-wrapper gdb,--args"
  47     shift
  48 elif [ "$1" == "--debug-tui" ] ; then
  49     debug_args="-wrapper gdb,--tui,--args"
  50     shift
  51 else
  52     debug_args=""
  53 fi
  54 pattern="$1"
  55 logf="$2"
  56 shift 2
  57
  58 # Find the commands in LOGF that reference PATTERN.
  59 lines=$(grep -E "^spawn .*$pattern" $logf | sed -e 's/^spawn //')
  60 if [ -z "$lines" ] ; then
  61     echo "Could not find a spawn command for pattern $pattern"
  62     exit 1
  63 fi
  64
  65 # Collect all the command lines into the COMMANDS array.
  66 old_IFS="$IFS"
  67 IFS="
"
  68 num_lines=0
  69 for line in $lines ; do
  70     num_lines=$[$num_lines + 1]
  71     echo "[$num_lines] $line"
  72     commands[$num_lines]=$line
  73 done
  74
  75 # If we found more than one line for PATTERN, ask which one we should run.
  76 cmds_to_run='0'
  77 if [ $num_lines -gt 1 ] ; then
  78     echo
  79     echo
  80     echo -n "Enter the list of commands to run or '0' to run them all: "
  81     read cmds_to_run
  82 fi
  83 if [ "$cmds_to_run" = "0" ] ; then
  84     cmds_to_run=$(seq 1 $num_lines)
  85 fi
  86 IFS="$old_IFS"
  87
  88 # Finally, execute all the commands we were told to execute.
  89 for cmd_num in $cmds_to_run ; do
  90     cmd=${commands[$cmd_num]}
  91     set -x +e
  92     $cmd $debug_args "$@"
  93     set +x -e
  94 done