source: branches/libc-0.6/src/gcc/contrib/warn_summary

Last change on this file was 2, checked in by bird, 22 years ago

Initial revision

  • Property cvs2svn:cvs-rev set to 1.1
  • Property svn:eol-style set to native
  • Property svn:executable set to *
File size: 6.2 KB
Line 
1#!/bin/sh
2#
3# This script parses the output of a gcc bootstrap when using warning
4# flags and determines various statistics.
5#
6# usage: warn_summary [-llf] [-s stage] [-nosub|-ch|-cp|-f|-java|-ada|-intl|-fixinc]
7# [-pass|-wpass] [file(s)]
8#
9# -llf
10# Filter out long lines from the bootstrap output before any other
11# action. This is useful for systems with broken awks/greps which choke
12# on long lines. It is not done by default as it sometimes slows things
13# down.
14#
15# -s number
16# Take warnings from stage "Number". Stage 0 means show warnings from
17# before and after the gcc bootstrap directory. E.g. libraries, etc.
18# This presupposes using "gcc -W*" for the stage1 compiler.
19#
20# -nosub
21# Only show warnings from the gcc top level directory.
22# -ch|-cp|-f|-java|-ada|-intl|-fixinc
23# Only show warnings from the specified language subdirectory.
24# These override each other so only the last one passed takes effect.
25#
26# -pass
27# Pass through the bootstrap output after filtering stage and subdir
28# (useful for manual inspection.) This is all lines, not just warnings.
29# -wpass
30# Pass through only warnings from the bootstrap output after filtering
31# stage and subdir.
32#
33# By Kaveh Ghazi (ghazi@caip.rutgers.edu) 12/13/97.
34
35
36# Some awks choke on long lines, sed seems to do a better job.
37# Truncate lines > 255 characters. RE '.\{255,\}' doesn't seem to work. :-(
38# Only do this if -llf was specified, because it can really slow things down.
39longLineFilter()
40{
41 if test -z "$llf" ; then
42 cat
43 else
44 sed 's/^\(...............................................................................................................................................................................................................................................................\).*/\1/'
45 fi
46}
47
48# This function does one of three things. It either passes through
49# all warning data, or passes through gcc toplevel warnings, or passes
50# through a particular subdirectory set of warnings.
51subdirectoryFilter()
52{
53 longLineFilter | (
54 if test -z "$filter" ; then
55 # Pass through all lines.
56 cat
57 else
58 if test "$filter" = nosub ; then
59 # Omit all subdirectories.
60 egrep -v '/gcc/(ch|cp|f|java|intl|fixinc)/'
61 else
62 # Pass through only subdir $filter.
63 grep "/gcc/$filter/"
64 fi
65 fi )
66}
67
68# This function displays all lines from stageN of the bootstrap. If
69# stage==0, then show lines prior to stage1 and lines from after the last
70# stage. I.e. utilities, libraries, etc.
71stageNfilter()
72{
73 if test "$stageN" -lt 1 ; then
74 # stage "0" means check everything *but* gcc.
75 $AWK "BEGIN{t=1} ; /^Bootstrapping the compiler/{t=0} ; /^Building runtime libraries/{t=1} ; {if(t==1)print}"
76 else
77 if test "$stageN" -eq 1 ; then
78 $AWK "/^Bootstrapping the compiler|^Building the C and C\+\+ compiler/{t=1} ; /stage$stageN/{t=0} ; {if(t==1)print}"
79 else
80 stageNminus1=`expr $stageN - 1`
81 $AWK "/stage${stageNminus1}\//{t=1} ; /stage$stageN/{t=0} ; {if(t==1)print}"
82 fi
83 fi
84}
85
86# This function displays lines containing warnings.
87warningFilter()
88{
89 grep ' warning: '
90}
91
92# This function replaces `xxx' with `???', where xxx is usually some
93# variable or function name. This allows similar warnings to be
94# counted together when summarizing. However it avoids replacing
95# certain C keywords which are known appear in various messages.
96
97keywordFilter() {
98 sed 's/.*warning: //;
99 s/`\(int\)'"'"'/"\1"/g;
100 s/`\(long\)'"'"'/"\1"/g;
101 s/`\(char\)'"'"'/"\1"/g;
102 s/`\(inline\)'"'"'/"\1"/g;
103 s/`\(else\)'"'"'/"\1"/g;
104 s/`\(return\)'"'"'/"\1"/g;
105 s/`\(static\)'"'"'/"\1"/g;
106 s/`\(extern\)'"'"'/"\1"/g;
107 s/`\(const\)'"'"'/"\1"/g;
108 s/`\(noreturn\)'"'"'/"\1"/g;
109 s/`\(longjmp\)'"'"' or `\(vfork\)'"'"'/"\1" or "\2"/g;
110 s/`'"[^']*'/"'`???'"'/g;"'
111 s/.*format, .* arg (arg [0-9][0-9]*)/??? format, ??? arg (arg ???)/;
112 s/\([( ]\)arg [0-9][0-9]*\([) ]\)/\1arg ???\2/;
113 s/"\([^"]*\)"/`\1'"'"'/g'
114}
115
116# This function strips out relative pathnames for source files printed
117# by the warningFilter function. This is done so that as the snapshot
118# directory name changes every week, the output of this program can be
119# compared to previous runs without spurious diffs caused by source
120# directory name changes.
121
122srcdirFilter()
123{
124 sed '
125s%^[^ ]*/\(gcc/\)%\1%;
126s%^[^ ]*/\(include/\)%\1%;
127s%^[^ ]*/\(texinfo/\)%\1%;
128s%^[^ ]*/\(fastjar/\)%\1%;
129s%^[^ ]*/\(zlib/\)%\1%;
130s%^[^ ]*/\(lib[a-z23+-]*/\)%\1%;'
131}
132
133# Start the main section.
134
135usage="usage: `basename $0` [-llf] [-s stage] [-nosub|-ch|-cp|-f|-java|-ada|-intl|-fixinc] [-pass|-wpass] [file(s)]"
136stageN=3
137tmpfile=/tmp/tmp-warn.$$
138
139# Remove $tmpfile on exit and various signals.
140trap "rm -f $tmpfile" 0
141trap "rm -f $tmpfile ; exit 1" 1 2 3 5 9 13 15
142
143# Find a good awk.
144if test -z "$AWK" ; then
145 for AWK in gawk nawk awk ; do
146 if type $AWK 2>&1 | grep 'not found' > /dev/null 2>&1 ; then
147 :
148 else
149 break
150 fi
151 done
152fi
153
154# Parse command line arguments.
155while test -n "$1" ; do
156 case "$1" in
157 -llf) llf=1 ; shift ;;
158 -s) if test -z "$2"; then echo $usage 1>&2; exit 1; fi
159 stageN="$2"; shift 2 ;;
160 -s*) stageN="`expr $1 : '-s\(.*\)'`" ; shift ;;
161 -nosub|-ch|-cp|-f|-java|-ada|-intl|-fixinc) filter="`expr $1 : '-\(.*\)'`" ; shift ;;
162 -pass) pass=1 ; shift ;;
163 -wpass) pass=w ; shift ;;
164 -*) echo $usage 1>&2 ; exit 1 ;;
165 *) break ;;
166 esac
167done
168
169# Check for a valid value of $stageN.
170case "$stageN" in
171 [0-9]) ;;
172 *) echo "Stage <$stageN> must be in the range [0..9]." 1>&2 ; exit 1 ;;
173esac
174
175for file in "$@" ; do
176
177 stageNfilter < $file | subdirectoryFilter > $tmpfile
178
179 # (Just) show me the warnings.
180 if test "$pass" != '' ; then
181 if test "$pass" = w ; then
182 warningFilter < $tmpfile
183 else
184 cat $tmpfile
185 fi
186 continue
187 fi
188
189 if test -z "$filter" ; then
190 echo "Counting all warnings,"
191 else
192 if test "$filter" = nosub ; then
193 echo "Counting non-subdirectory warnings,"
194 else
195 echo "Counting warnings in the gcc/$filter subdirectory,"
196 fi
197 fi
198 count=`warningFilter < $tmpfile | wc -l`
199 echo there are $count warnings in stage$stageN of this bootstrap.
200
201 echo
202 echo Number of warnings per file:
203 warningFilter < $tmpfile | srcdirFilter | $AWK -F: '{print$1}' | sort | \
204 uniq -c | sort -nr
205
206 echo
207 echo Number of warning types:
208 warningFilter < $tmpfile | keywordFilter | sort | uniq -c | sort -nr
209
210done
Note: See TracBrowser for help on using the repository browser.