gcc/contrib/warn_summary

#!/bin/sh
# This script parses the output of a gcc bootstrap when using warning
# flags and determines various statistics.
#
# By Kaveh Ghazi  (ghazi@caip.rutgers.edu)  12/13/97.

# This function displays all warnings from stageN of the bootstrap.
stageNwarns()
{
  stageNminus1=`expr $stageN - 1`
# Some awks choke on long lines so grep them out.
  grep -v libf2c.a $1 | \
	$AWK "/ warning: /{if(t==1)print} ; /stage$stageNminus1/{if(t==0)t=1} ; /stage$stageN/{if(t==1)t=0}"
}

usage="usage: `basename $0` [-s stage] [file(s)]"
stageN=3

# Find a good awk.
if test -z "$AWK" ; then
  for AWK in gawk nawk awk ; do
    if type $AWK 2>&1 | grep 'not found' > /dev/null 2>&1 ; then
      :
    else
      break
    fi
  done
fi

while test -n "$1" ; do
 case "$1" in
   -s)  if test -z "$2"; then echo $usage; exit 1; fi; stageN="$2"; shift 2 ;;
   -s*) stageN="`expr $1 : '-s\(.*\)'`" ; shift ;;
   -*)  echo $usage ; exit 1 ;;
   *)   break ;;
 esac
done



for file in "$@" ; do

  count=`stageNwarns $file | wc -l`
  echo There are $count warnings in stage$stageN of this bootstrap.

  echo
  echo Number of warnings per file:
  stageNwarns $file | $AWK -F: '{print$1}' | sort | uniq -c | sort -nr

  echo
  echo Number of warning types:
  stageNwarns $file | sed 's/.*warning: //; 
		s/`\(int\)'"'"'/"\1"/g;
		s/`\(char\)'"'"'/"\1"/g;
		s/`\(inline\)'"'"'/"\1"/g;
		s/`\(else\)'"'"'/"\1"/g;
		s/`\(return\)'"'"'/"\1"/g;
		s/`\(static\)'"'"'/"\1"/g;
		s/`\(extern\)'"'"'/"\1"/g;
		s/`\(longjmp\)'"'"' or `\(vfork\)'"'"'/"\1" or "\2"/g;
		s/`'"[^']*'/"'`???'"'/g;"'
		s/.*format, .* arg (arg [0-9]*)/??? format, ??? arg (arg ???)/;
		s/(arg [0-9]*)/(arg ???)/;
		s/"\([^"]*\)"/`\1'"'"'/g' | \
	sort | uniq -c | sort -nr

done