#!/bin/sh
+#
# This script parses the output of a gcc bootstrap when using warning
# flags and determines various statistics.
+#
+# usage: warn_summary [-llf] [-s stage] [-nosub|-ch|-cp|-f|-java]
+# [-pass|-wpass] [file(s)]
+#
+# -llf
+# Filter out long lines from the bootstap output before any other
+# action. This is useful for systems with broken awks/greps which choke
+# on long lines. It is not done by default as it sometimes slows things
+# down.
+#
+# -s number
+# Take warnings from stage "Number". Stage 0 means show warnings from
+# before and after the gcc bootstrap directory. E.g. libraries, etc.
+# This presupposes using "gcc -W*" for the stage1 compiler.
+#
+# -nosub
+# Only show warnings from the gcc top level directory.
+# -ch|-cp|-f|-java
+# Only show warnings from the specified language subdirectory.
+# These flags assume the output contains "Entering/Leaving" messages from
+# gnu make. They override each other so only the last one takes effect.
+#
+# -pass
+# Pass through the bootstrap output after filtering stage and subdir
+# (useful for manual inspection.) This is all lines, not just warnings.
+# -wpass
+# Pass through only warnings from the bootstrap output after filtering
+# stage and subdir.
#
# By Kaveh Ghazi (ghazi@caip.rutgers.edu) 12/13/97.
+
+# Some awks choke on long lines, sed seems to do a better job.
+# Truncate lines > 255 characters. RE '.\{255,\}' doesn't seem to work. :-(
+# Only do this if -llf was specified, because it can really slow things down.
+longLineFilter()
+{
+ if test -z "$llf" ; then
+ cat $1
+ else
+ sed 's/^\(...............................................................................................................................................................................................................................................................\).*/\1/' $1
+ fi
+}
+
# This function does one of three things. It either passes through
# all warning data, or passes through gcc toplevel warnings, or passes
# through a particular subdirectory set of warnings.
subdirectoryFilter()
{
- if test "$filter" = '' ; then
+ longLineFilter $1 | (
+ if test -z "$filter" ; then
# Pass through all lines.
- cat $1
+ cat
else
if test "$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
+ $AWK 'BEGIN{t=1} ; /Entering directory.*\/gcc\/[a-z]/{t--} ; /Leaving directory.*\/gcc\/[a-z]/{t++} ; {if(t==1)print}'
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
+ $AWK "BEGIN {t=-1} ; /^cd $filter; make/{t=0} ; /Entering directory .*\/gcc\/$filter/{t++} ; /Leaving directory .*\/gcc\/$filter/{t--} ; {if(t==1)print}"
fi
- fi
+ fi )
}
-# This function displays all warnings from stageN of the bootstrap.
-stageNwarns()
+# This function displays all lines from stageN of the bootstrap. If
+# stage==0, then show lines prior to stage1 and lines from after the last
+# stage. I.e. utilities, libraries, etc.
+stageNfilter()
{
- 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$stageN/{if(t==1)t=0}"
+ if test "$stageN" -lt 1 ; then
+ # stage "0" means check everything *but* gcc.
+ $AWK "BEGIN{t=1} ; /^Bootstrapping the compiler/{t=0} ; /^Building runtime libraries/{t=1} ; {if(t==1)print}"
+ else
+ if test "$stageN" -eq 1 ; then
+ $AWK "/^Bootstrapping the compiler|^Building the C and C\+\+ compiler/{t=1} ; /stage$stageN/{t=0} ; {if(t==1)print}"
+ else
+ stageNminus1=`expr $stageN - 1`
+ $AWK "/stage$stageNminus1/{t=1} ; /stage$stageN/{t=0} ; {if(t==1)print}"
+ fi
+ fi
+}
+
+# This function displays lines containing warnings.
+warningFilter()
+{
+ grep ' warning: ' $1
}
-usage="usage: `basename $0` [-s stage] [-nosub|-ch|-cp|-f|-java] [file(s)]"
+# This function replaces `xxx' with `???', where xxx is usually some
+# variable or function name. This allows similar warnings to be
+# counted together when summarizing. However it avoids replacing
+# certain C keywords which are known appear in various messages.
+
+keywordFilter() {
+ 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/`\(noreturn\)'"'"'/"\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'
+}
+
+
+# Start the main section.
+
+usage="usage: `basename $0` [-llf] [-s stage] [-nosub|-ch|-cp|-f|-java] [-pass|-wpass] [file(s)]"
stageN=3
+tmpfile=/tmp/tmp-warn.$$
+
+# Remove $tmpfile on exit and various signals.
+trap "rm -f $tmpfile" 0
+trap "rm -f $tmpfile ; exit 1" 1 2 3 5 9 13 15
# Find a good awk.
if test -z "$AWK" ; then
done
fi
+# Parse command line arguments.
while test -n "$1" ; do
case "$1" in
+ -llf) llf=1 ; shift ;;
-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 ;;
+ -pass) pass=1 ; shift ;;
+ -wpass) pass=w ; shift ;;
-*) echo $usage ; exit 1 ;;
*) break ;;
esac
# Check for a valid value of $stageN.
case "$stageN" in
- [1-9]) ;;
- *) echo "Stage <$stageN> must be in the range [1..9]." ; exit 1 ;;
+ [0-9]) ;;
+ *) echo "Stage <$stageN> must be in the range [0..9]." ; exit 1 ;;
esac
for file in "$@" ; do
- if test "$filter" = '' ; then
+ subdirectoryFilter $file | stageNfilter > $tmpfile
+
+ # (Just) show me the warnings.
+ if test "$pass" != '' ; then
+ if test "$pass" = w ; then
+ warningFilter $tmpfile
+ else
+ cat $tmpfile
+ fi
+ continue
+ fi
+
+ if test -z "$filter" ; then
echo "Counting all warnings,"
else
if test "$filter" = nosub ; then
echo "Counting warnings in the gcc/$filter subdirectory,"
fi
fi
- count=`subdirectoryFilter $file | stageNwarns | wc -l`
+ count=`warningFilter $tmpfile | 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
+ warningFilter $tmpfile | $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
+ warningFilter $tmpfile | keywordFilter | sort | uniq -c | sort -nr
done
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