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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.2.2/] [contrib/] [warn_summary] - Blame information for rev 38

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Line No. Rev Author Line
1 38 julius
#!/bin/sh
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#
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# This script parses the output of a gcc bootstrap when using warning
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# flags and determines various statistics.
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#
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# usage: warn_summary [-llf] [-s stage] [-nosub|-ch|-cp|-f|-fortran|-java|-ada|-intl|-fixinc]
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#       [-pass|-wpass] [file(s)]
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#
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# -llf
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# Filter out long lines from the bootstrap output before any other
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# action.  This is useful for systems with broken awks/greps which choke
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# on long lines.  It is not done by default as it sometimes slows things
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# down.
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#
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# -s number
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# Take warnings from stage "Number".  Stage 0 means show warnings from
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# before and after the gcc bootstrap directory.  E.g. libraries, etc.
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# This presupposes using "gcc -W*" for the stage1 compiler.
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#
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# -nosub
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# Only show warnings from the gcc top level directory.
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# -ch|-cp|-f|-fortran|-java|-ada|-intl|-fixinc
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# Only show warnings from the specified gcc subdirectory.
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# These override each other so only the last one passed takes effect.
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#
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# -pass
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# Pass through the bootstrap output after filtering stage and subdir
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# (useful for manual inspection.)  This is all lines, not just warnings.
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# -wpass
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# Pass through only warnings from the bootstrap output after filtering
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# stage and subdir.
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#
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# By Kaveh Ghazi  (ghazi@caip.rutgers.edu)  12/13/97.
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# Some awks choke on long lines, sed seems to do a better job.
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# Truncate lines > 255 characters.  RE '.\{255,\}' doesn't seem to work. :-(
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# Only do this if -llf was specified, because it can really slow things down.
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longLineFilter()
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{
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  if test -z "$llf" ; then
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    cat
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  else
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    sed 's/^\(...............................................................................................................................................................................................................................................................\).*/\1/'
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  fi
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}
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# This function does one of three things.  It either passes through
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# all warning data, or passes through gcc toplevel warnings, or passes
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# through a particular subdirectory set of warnings.
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subdirectoryFilter()
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{
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  longLineFilter | (
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  if test -z "$filter" ; then
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    # Pass through all lines.
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    cat
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  else
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    if test "$filter" = nosub ; then
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      # Omit all subdirectories.
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      egrep -v '/gcc/(ch|cp|f|fortran|java|ada|intl|fixinc)/'
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    else
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      # Pass through only subdir $filter.
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      grep "/gcc/$filter/"
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    fi
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  fi )
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}
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# This function displays all lines from stageN of the bootstrap.  If
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# stage==0, then show lines prior to stage1 and lines from after the last
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# stage.  I.e. utilities, libraries, etc.
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stageNfilter()
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{
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  if test "$stageN" -lt 1 ; then
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    # stage "0" means check everything *but* gcc.
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    $AWK "BEGIN{t=1} ; /^Bootstrapping the compiler/{t=0} ; /^Building runtime libraries/{t=1} ; {if(t==1)print}"
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  else
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    if test "$stageN" -eq 1 ; then
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      $AWK "/^Bootstrapping the compiler|^Building the C and C\+\+ compiler/{t=1} ; /stage$stageN/{t=0} ; {if(t==1)print}"
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    else
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      stageNminus1=`expr $stageN - 1`
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      $AWK "/stage${stageNminus1}\//{t=1} ; /stage$stageN/{t=0} ; {if(t==1)print}"
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    fi
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  fi
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}
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# This function displays lines containing warnings.
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warningFilter()
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{
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  grep ' warning: '
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}
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# This function replaces `xxx' with `???', where xxx is usually some
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# variable or function name.  This allows similar warnings to be
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# counted together when summarizing.  However it avoids replacing
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# certain C keywords which are known appear in various messages.
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keywordFilter() {
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  sed 's/.*warning: //;
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        s/`\(int\)'"'"'/"\1"/g;
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        s/`\(long\)'"'"'/"\1"/g;
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        s/`\(char\)'"'"'/"\1"/g;
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        s/`\(inline\)'"'"'/"\1"/g;
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        s/`\(else\)'"'"'/"\1"/g;
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        s/`\(return\)'"'"'/"\1"/g;
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        s/`\(static\)'"'"'/"\1"/g;
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        s/`\(extern\)'"'"'/"\1"/g;
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        s/`\(const\)'"'"'/"\1"/g;
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        s/`\(noreturn\)'"'"'/"\1"/g;
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        s/`\(longjmp\)'"'"' or `\(vfork\)'"'"'/"\1" or "\2"/g;
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        s/'"[\`'][^']*'/"'"???"/g;
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        s/.*format, .* arg (arg [0-9][0-9]*)/??? format, ??? arg (arg ???)/;
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        s/\([( ]\)arg [0-9][0-9]*\([) ]\)/\1arg ???\2/;
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        s/"\([^"]*\)"/`\1'"'"'/g'
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}
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# This function strips out relative pathnames for source files printed
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# by the warningFilter function.  This is done so that as the snapshot
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# directory name changes every week, the output of this program can be
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# compared to previous runs without spurious diffs caused by source
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# directory name changes.
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srcdirFilter()
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{
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  sed '
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s%^[^ ]*/\(gcc/\)%\1%;
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s%^[^ ]*/\(include/\)%\1%;
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s%^[^ ]*/\(texinfo/\)%\1%;
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s%^[^ ]*/\(fastjar/\)%\1%;
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s%^[^ ]*/\(zlib/\)%\1%;
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s%^[^ ]*/\(lib[a-z23+-]*/\)%\1%;'
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}
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# Start the main section.
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usage="usage: `basename $0` [-llf] [-s stage] [-nosub|-ch|-cp|-f|-fortran|-java|-ada|-intl|-fixinc] [-pass|-wpass] [file(s)]"
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stageN=3
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tmpfile=/tmp/tmp-warn.$$
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# Remove $tmpfile on exit and various signals.
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trap "rm -f $tmpfile" 0
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trap "rm -f $tmpfile ; exit 1" 1 2 3 5 9 13 15
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# Find a good awk.
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if test -z "$AWK" ; then
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  for AWK in gawk nawk awk ; do
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    if type $AWK 2>&1 | grep 'not found' > /dev/null 2>&1 ; then
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      :
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    else
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      break
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    fi
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  done
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fi
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# Parse command line arguments.
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while test -n "$1" ; do
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 case "$1" in
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   -llf) llf=1 ; shift ;;
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   -s)  if test -z "$2"; then echo $usage 1>&2; exit 1; fi
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        stageN="$2"; shift 2 ;;
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   -s*) stageN="`expr $1 : '-s\(.*\)'`" ; shift ;;
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   -nosub|-ch|-cp|-f|-fortran|-java|-ada|-intl|-fixinc) filter="`expr $1 : '-\(.*\)'`" ; shift ;;
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   -pass) pass=1 ; shift ;;
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   -wpass) pass=w ; shift ;;
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   -*)  echo $usage 1>&2 ; exit 1 ;;
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   *)   break ;;
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 esac
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done
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# Check for a valid value of $stageN.
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case "$stageN" in
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  [0-9]) ;;
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  *) echo "Stage <$stageN> must be in the range [0..9]." 1>&2 ; exit 1 ;;
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esac
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for file in "$@" ; do
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  stageNfilter < $file | subdirectoryFilter > $tmpfile
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  # (Just) show me the warnings.
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  if test "$pass" != '' ; then
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    if test "$pass" = w ; then
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      warningFilter < $tmpfile
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    else
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      cat $tmpfile
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    fi
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    continue
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  fi
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  if test -z "$filter" ; then
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    echo "Counting all warnings,"
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  else
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    if test "$filter" = nosub ; then
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      echo "Counting non-subdirectory warnings,"
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    else
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      echo "Counting warnings in the gcc/$filter subdirectory,"
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    fi
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  fi
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  count=`warningFilter < $tmpfile | wc -l`
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  echo there are $count warnings in stage$stageN of this bootstrap.
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  echo
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  echo Number of warnings per file:
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  warningFilter < $tmpfile | srcdirFilter | $AWK -F: '{print$1}' | sort | \
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    uniq -c | sort -nr
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  echo
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  echo Number of warning types:
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  warningFilter < $tmpfile | keywordFilter | sort | uniq -c | sort -nr
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done

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