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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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children 04ced10e8804
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-1:000000000000 0:a06113de4d67
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|-fortran|-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|-fortran|-java|-ada|-intl|-fixinc
23 # Only show warnings from the specified gcc 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.
39 longLineFilter()
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.
51 subdirectoryFilter()
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|fortran|java|ada|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.
71 stageNfilter()
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.
87 warningFilter()
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
97 keywordFilter() {
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
122 srcdirFilter()
123 {
124 sed '
125 s%^[^ ]*/\(gcc/\)%\1%;
126 s%^[^ ]*/\(include/\)%\1%;
127 s%^[^ ]*/\(texinfo/\)%\1%;
128 s%^[^ ]*/\(fastjar/\)%\1%;
129 s%^[^ ]*/\(zlib/\)%\1%;
130 s%^[^ ]*/\(fixincludes/\)%\1%;
131 s%^[^ ]*/\(sim/\)%\1%;
132 s%^[^ ]*/\(newlib/\)%\1%;
133 s%^[^ ]*/\(mpfr/\)%\1%;
134 s%^[^ ]*/\(lib[a-z23+-]*/\)%\1%;'
135 }
136
137 # Start the main section.
138
139 usage="usage: `basename $0` [-llf] [-s stage] [-nosub|-ch|-cp|-f|-fortran|-java|-ada|-intl|-fixinc] [-pass|-wpass] [file(s)]"
140 stageN=3
141 tmpfile=/tmp/tmp-warn.$$
142
143 # Remove $tmpfile on exit and various signals.
144 trap "rm -f $tmpfile" 0
145 trap "rm -f $tmpfile ; exit 1" 1 2 3 5 9 13 15
146
147 # Find a good awk.
148 if test -z "$AWK" ; then
149 for AWK in gawk nawk awk ; do
150 if type $AWK 2>&1 | grep 'not found' > /dev/null 2>&1 ; then
151 :
152 else
153 break
154 fi
155 done
156 fi
157
158 # Parse command line arguments.
159 while test -n "$1" ; do
160 case "$1" in
161 -llf) llf=1 ; shift ;;
162 -s) if test -z "$2"; then echo $usage 1>&2; exit 1; fi
163 stageN="$2"; shift 2 ;;
164 -s*) stageN="`expr $1 : '-s\(.*\)'`" ; shift ;;
165 -nosub|-ch|-cp|-f|-fortran|-java|-ada|-intl|-fixinc) filter="`expr $1 : '-\(.*\)'`" ; shift ;;
166 -pass) pass=1 ; shift ;;
167 -wpass) pass=w ; shift ;;
168 -*) echo $usage 1>&2 ; exit 1 ;;
169 *) break ;;
170 esac
171 done
172
173 # Check for a valid value of $stageN.
174 case "$stageN" in
175 [0-9]) ;;
176 *) echo "Stage <$stageN> must be in the range [0..9]." 1>&2 ; exit 1 ;;
177 esac
178
179 for file in "$@" ; do
180
181 stageNfilter < $file | subdirectoryFilter > $tmpfile
182
183 # (Just) show me the warnings.
184 if test "$pass" != '' ; then
185 if test "$pass" = w ; then
186 warningFilter < $tmpfile
187 else
188 cat $tmpfile
189 fi
190 continue
191 fi
192
193 if test -z "$filter" ; then
194 echo "Counting all warnings,"
195 else
196 if test "$filter" = nosub ; then
197 echo "Counting non-subdirectory warnings,"
198 else
199 echo "Counting warnings in the gcc/$filter subdirectory,"
200 fi
201 fi
202 count=`warningFilter < $tmpfile | wc -l`
203 echo there are $count warnings in stage$stageN of this bootstrap.
204
205 echo
206 echo Number of warnings per file:
207 warningFilter < $tmpfile | srcdirFilter | $AWK -F: '{print$1}' | sort | \
208 uniq -c | sort -nr
209
210 echo
211 echo Number of warning types:
212 warningFilter < $tmpfile | keywordFilter | sort | uniq -c | sort -nr
213
214 done