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egcs, script to summarize stage3 warning output
- To: egcs at cygnus dot com
- Subject: egcs, script to summarize stage3 warning output
- From: "Kaveh R. Ghazi" <ghazi at caip dot rutgers dot edu>
- Date: Mon, 16 Feb 1998 16:34:04 -0500 (EST)
Here is the script I've been using to parse the stage3 output
from a bootstrap and summarize the warning diagnostics. Just do a
bootstrap into a file and run it as "warns [bootstrap-outputfile]". Its
useful to help understand where to focus your efforts, either on a
particular file or on a particular warning type.
I've just done three particularly noisy files, fold-const.c,
haifa-sched.c and cp/method.c using this script to choose them.
(Patches forthcoming after some testing.) I hope someone finds the
script useful. Now that -W -Wall is on by default, if you find
yourself in a file for any reason, see if you can whack a few warnings
while you're at it. :-)
--Kaveh
#!/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 displays all warnings from stage3 of the bootstrap.
stage3warns()
{
# Some awks choke on long lines so grep them out.
grep -v libf2c.a $1 | \
$AWK '/ warning: /{if(t==1)print} ; /stage2/{if(t==0)t=1}'
}
# Find a good awk.
if test -z "$AWK" ; then
for AWK in gawk nawk awk ; do
if type $AWK 2>&1 | grep 'not found' > /dev/null 2>&1 ; then
:
else
break
fi
done
fi
for file in "$@" ; do
count=`stage3warns $file | wc -l`
echo There are $count warnings in stage3 of this bootstrap.
echo
echo Number of warnings per file:
stage3warns $file | $AWK -F: '{print$1}' | sort | uniq -c | sort -nr
echo
echo Number of warning types:
stage3warns $file | sed 's/.*warning: //;
s/`\(int\)'"'"'/"\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/`\(longjmp\)'"'"' or `\(vfork\)'"'"'/"\1" or "\2"/g;
s/`'"[^']*'/"'`???'"'/g;"'
s/.*format, .* arg (arg [0-9]*)/??? format, ??? arg (arg ???)/;
s/(arg [0-9]*)/(arg ???)/;
s/"\([^"]*\)"/`\1'"'"'/g' | \
sort | uniq -c | sort -nr
done