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repro_fail revision 1.1 
      1 #!/bin/bash -eu
      2 #
      3 # Script to reproduce a test failure from a dejagnu .log file.
      4 #
      5 # Contributed by Diego Novillo <dnovillo (at] google.com>
      6 #
      7 # Copyright (C) 2011, 2012 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="
"
     69 num_lines=0
     70 for line in $lines ; do
     71     num_lines=$[$num_lines + 1]
     72     echo "[$num_lines] $line"
     73     commands[$num_lines]=$line
     74 done
     75 
     76 # If we found more than one line for PATTERN, ask which one we should run.
     77 cmds_to_run='0'
     78 if [ $num_lines -gt 1 ] ; then
     79     echo
     80     echo
     81     echo -n "Enter the list of commands to run or '0' to run them all: "
     82     read cmds_to_run
     83 fi
     84 if [ "$cmds_to_run" = "0" ] ; then
     85     cmds_to_run=$(seq 1 $num_lines)
     86 fi
     87 IFS="$old_IFS"
     88 
     89 # Finally, execute all the commands we were told to execute.
     90 for cmd_num in $cmds_to_run ; do
     91     cmd=${commands[$cmd_num]}
     92     set -x +e
     93     $cmd $debug_args "$@"
     94     set +x -e
     95 done
     96