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gcc.gnu.org Git - gcc.git/blob - contrib/warn_summary
3 # This script parses the output of a gcc bootstrap when using warning
4 # flags and determines various statistics.
6 # usage: warn_summary [-llf] [-s stage] [-nosub|-ch|-cp|-f|-java|-ada|-intl|-fixinc]
7 # [-pass|-wpass] [file(s)]
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
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.
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.
27 # Pass through the bootstrap output after filtering stage and subdir
28 # (useful for manual inspection.) This is all lines, not just warnings.
30 # Pass through only warnings from the bootstrap output after filtering
33 # By Kaveh Ghazi (ghazi@caip.rutgers.edu) 12/13/97.
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.
41 if test -z "$llf" ; then
44 sed 's/^\(...............................................................................................................................................................................................................................................................\).*/\1/'
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.
54 if test -z "$filter" ; then
55 # Pass through all lines.
58 if test "$filter" = nosub
; then
59 # Omit all subdirectories.
60 egrep -v '/gcc/(ch|cp|f|java|intl|fixinc)/'
62 # Pass through only subdir $filter.
68 # This function displays all lines from stageN of the bootstrap. If
69 # stage==0, then show lines prior to stage1 and lines from after the last
70 # stage. I.e. utilities, libraries, etc.
73 if test "$stageN" -lt 1 ; then
74 # stage "0" means check everything *but* gcc.
75 $AWK "BEGIN{t=1} ; /^Bootstrapping the compiler/{t=0} ; /^Building runtime libraries/{t=1} ; {if(t==1)print}"
77 if test "$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}"
80 stageNminus1
=`expr $stageN - 1`
81 $AWK "/stage${stageNminus1}\//{t=1} ; /stage$stageN/{t=0} ; {if(t==1)print}"
86 # This function displays lines containing warnings.
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.
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'
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.
125 s%^[^ ]*/\(gcc/\)%\1%;
126 s%^[^ ]*/\(include/\)%\1%;
127 s%^[^ ]*/\(texinfo/\)%\1%;
128 s%^[^ ]*/\(fastjar/\)%\1%;
129 s%^[^ ]*/\(zlib/\)%\1%;
130 s%^[^ ]*/\(lib[a-z23+-]*/\)%\1%;'
133 # Start the main section.
135 usage
="usage: `basename $0` [-llf] [-s stage] [-nosub|-ch|-cp|-f|-java|-ada|-intl|-fixinc] [-pass|-wpass] [file(s)]"
137 tmpfile
=/tmp
/tmp-warn.$$
139 # Remove $tmpfile on exit and various signals.
140 trap "rm -f $tmpfile" 0
141 trap "rm -f $tmpfile ; exit 1" 1 2 3 5 9 13 15
144 if test -z "$AWK" ; then
145 for AWK
in gawk nawk
awk ; do
146 if type $AWK 2>&1 |
grep 'not found' > /dev
/null
2>&1 ; then
154 # Parse command line arguments.
155 while test -n "$1" ; do
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 ;;
169 # Check for a valid value of $stageN.
172 *) echo "Stage <$stageN> must be in the range [0..9]." 1>&2 ; exit 1 ;;
175 for file in "$@" ; do
177 stageNfilter
< $file | subdirectoryFilter
> $tmpfile
179 # (Just) show me the warnings.
180 if test "$pass" != '' ; then
181 if test "$pass" = w
; then
182 warningFilter
< $tmpfile
189 if test -z "$filter" ; then
190 echo "Counting all warnings,"
192 if test "$filter" = nosub
; then
193 echo "Counting non-subdirectory warnings,"
195 echo "Counting warnings in the gcc/$filter subdirectory,"
198 count
=`warningFilter < $tmpfile | wc -l`
199 echo there are
$count warnings
in stage
$stageN of this bootstrap.
202 echo Number of warnings per
file:
203 warningFilter
< $tmpfile | srcdirFilter |
$AWK -F: '{print$1}' |
sort | \
207 echo Number of warning types
:
208 warningFilter
< $tmpfile | keywordFilter |
sort |
uniq -c |
sort -nr
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