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#!/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 does one of three things. It either passes through
# all warning data, or passes through gcc toplevel warnings, or passes
# through a particular subdirectory set of warnings.
subdirectoryFilter()
{
if test "$filter" = '' ; then
# Pass through all lines.
cat $1
else
if test "$filter" = nosub ; then
# Omit all subdirectories.
$AWK 'BEGIN{t=1} ; /^cd [a-z]*; make/{if(t==1)t=0} ; /Leaving directory/{if(t==0)t=1} ; {if(t==1)print}' $1
else
# Pass through only subdir $filter.
$AWK "/^cd $filter"'; make/{if(t==0)t=1} ; /Leaving directory/{if(t==1)t=0} ; {if(t==1)print}' $1
fi
fi
}
# 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 $0` [-s stage] [-nosub|-ch|-cp|-f|-java] [file(s)]"
stageN=3
# Find a good awk.
if test -z "$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 ;;
-nosub|-ch|-cp|-f|-java) filter="`expr $1 : '-\(.*\)'`" ; shift ;;
-*) echo $usage ; exit 1 ;;
*) break ;;
esac
done
# Check for a valid value of $stageN.
case "$stageN" in
[1-9]) ;;
*) echo "Stage <$stageN> must be in the range [1..9]." ; exit 1 ;;
esac
for file in "$@" ; do
if test "$filter" = '' ; then
echo "Counting all warnings,"
else
if test "$filter" = nosub ; then
echo "Counting non-subdirectory warnings,"
else
echo "Counting warnings in the gcc/$filter subdirectory,"
fi
fi
count=`subdirectoryFilter $file | stageNwarns | wc -l`
echo there are $count warnings in stage$stageN of this bootstrap.
echo
echo Number of warnings per file:
subdirectoryFilter $file | stageNwarns | $AWK -F: '{print$1}' | \
sort | uniq -c | sort -nr
echo
echo Number of warning types:
subdirectoryFilter $file | stageNwarns | sed 's/.*warning: //;
s/`\(int\)'"'"'/"\1"/g;
s/`\(long\)'"'"'/"\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/`\(const\)'"'"'/"\1"/g;
s/`\(longjmp\)'"'"' or `\(vfork\)'"'"'/"\1" or "\2"/g;
s/`'"[^']*'/"'`???'"'/g;"'
s/.*format, .* arg (arg [0-9][0-9]*)/??? format, ??? arg (arg ???)/;
s/\([( ]\)arg [0-9][0-9]*\([) ]\)/\1arg ???\2/;
s/"\([^"]*\)"/`\1'"'"'/g' | \
sort | uniq -c | sort -nr
done
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