Date: Sun, 09 Apr 2000 00:15:26 +0200 From: Ernst de Haan <ernst@jollem.com> To: freebsd-java@freebsd.org Subject: Analysis of compile warnings/errors (patchset 4) Message-ID: <38EFAF7E.2C47B3FE@jollem.com>
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Hi,
On advise of Kees-Jan (thanx m8!) I analysed the output the compile
process sent to stderr. I've written a script that does the analysis by
counting the number of occurences of certain messages. Both the script and
the results for patchset 4 are attached. This script can also be used to
alalyze future patchsets.
This should give us an idea of what kind of lexical errors and warnings
our port still has.
If you want to execute the script (filter-compile-errors), then you should
first change the filename setting in the script to reflect the location of
file that contains the stderr output.
PS: Perhaps using lint to catch some common (and less common) mistakes is
a good idea.
Ernst
--
Ernst de Haan
Freelance Java Architect
"Come to me all who are weary and burdened,
and I will give you rest" -- Jesus Christ
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name="jdk12-compile-err-analysis"
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filename="jdk12-compile-err-analysis"
bash-2.03$ ./filter-compile-errors
>> Using temporary file /tmp/dm5247
>> Copying `/home/ernst/private/research-jdk12compile-errors/jdk12compile.err' to `remains'
>> Removing lines "In function"... [ DONE ]
>> Removing lines "^1 warning$"... [ DONE ]
>> Removing lines "^ from .*\..*:[0-9]*[,:]$"... [ DONE ]
>> Removing lines "In file included from"... [ DONE ]
>> Removing lines "^\[Parsed DTD .* in [0-9]*ms\]$"... [ DONE ]
>> Removing lines "Warning: JIT compiler ".*" not found\. Will use interpreter\."... [ DONE ]
>> Removing lines "this is the location of the previous definition"... [ DONE ]
>> Removing lines "Error.* (ignored)$"... [ DONE ]
>> Removing lines "files use or override a deprecated API"... [ DONE ]
>> Removing lines "At top level"... [ DONE ]
>> Searching for "comparison between signed and unsigned"... [ 475 ]
>> Searching for "left shift count >= width of type"... [ 54 ]
>> Searching for "no previous prototype for"... [ 204 ]
>> Searching for "nested extern declaration of"... [ 26 ]
>> Searching for "warning: `.*' redefined"... [ 4 ]
>> Searching for "implicit declaration of"... [ 10 ]
>> Searching for "long int format"... [ 2 ]
>> Searching for "this file includes <malloc.h> which is deprecated"... [ 14 ]
>> Searching for "cast to pointer from integer of different size"... [ 2 ]
>> Searching for "cast from pointer to integer of different size"... [ 4 ]
>> Searching for "unsigned value >= 0 is always 1"... [ 4 ]
>> Searching for "warning: assignment makes pointer from integer without a cast"... [ 12 ]
>> Searching for "was used with no prototype before its definition"... [ 6 ]
>> Searching for "might be used uninitialized in this function"... [ 1 ]
>> Searching for "passing arg [0-9]* of `.*' makes integer from pointer without a cast"... [ 2 ]
>> Searching for "java uses or overrides a deprecated API"... [ 10 ]
>> Searching for "^cd: can't cd to "... [ 2 ]
>> Searching for "[Nn]o such file or directory"... [ 30 ]
>> Searching for "Note: Method .*(.*) in class .* does not override"... [ 1 ]
bash-2.03$
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name="filter-compile-errors"
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Content-Disposition: inline;
filename="filter-compile-errors"
#!/bin/sh
#
# $Id$
#
#
#
#
# Version: $Revision$ $Date$
# Authors: Ernst de Haan
#
# The file that contains the stderr output from the compile process
# Change this to the name of the file on your system
file=${HOME}/private/research-jdk12compile-errors/jdk12compile.err
step=0
tempfile=`mktemp /tmp/XXXXXX`
remainfile=remains
find-msg()
{
local num=0
local nextstep=0
nextstep=$((${step}+1))
echo -n ">> Searching for \"${re}\"..."
num=`grep -c "${re}" ${remainfile}`
echo " [ ${num} ]"
grep -v "${re}" ${remainfile} > ${tempfile}
cp ${tempfile} ${remainfile}
}
remove-lines()
{
echo -n ">> Removing lines \"${re}\"..."
echo " [ DONE ]"
grep -v "${re}" ${remainfile} > ${tempfile}
cp ${tempfile} ${remainfile}
}
echo ">> Using temporary file ${tempfile}"
echo ">> Copying \`${file}' to \`${remainfile}'"
cp ${file} ${remainfile}
re="In function"
remove-lines
re="^1 warning$"
remove-lines
re="^ from .*\..*:[0-9]*[,:]$"
remove-lines
re="In file included from"
remove-lines
re="^\[Parsed DTD .* in [0-9]*ms\]$"
remove-lines
re="Warning: JIT compiler \".*\" not found\. Will use interpreter\."
remove-lines
re="this is the location of the previous definition"
remove-lines
re="Error.* (ignored)$"
remove-lines
re="files use or override a deprecated API"
remove-lines
re="At top level"
remove-lines
re="comparison between signed and unsigned"
find-msg
re="left shift count >= width of type"
find-msg
re="no previous prototype for"
find-msg
re="nested extern declaration of"
find-msg
re="warning: \`.*' redefined"
find-msg
re="implicit declaration of"
find-msg
re="long int format"
find-msg
re="this file includes <malloc.h> which is deprecated"
find-msg
re="cast to pointer from integer of different size"
find-msg
re="cast from pointer to integer of different size"
find-msg
re="unsigned value >= 0 is always 1"
find-msg
re="warning: assignment makes pointer from integer without a cast"
find-msg
re="was used with no prototype before its definition"
find-msg
re="might be used uninitialized in this function"
find-msg
re="passing arg [0-9]* of \`.*' makes integer from pointer without a cast"
find-msg
re="java uses or overrides a deprecated API"
find-msg
re="^cd: can't cd to "
find-msg
re="[Nn]o such file or directory"
find-msg
re="Note: Method .*(.*) in class .* does not override"
find-msg
rm ${tempfile}
unset find-msg
unset re
unset tempfile
unset remainfile
--------------1F290E75CF7BE1DF2F955E29
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n:de Haan;Ernst
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url:http://www.znerd.demon.nl/
org:Jollem
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title:Java Architect
fn:Ernst de Haan
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--------------1F290E75CF7BE1DF2F955E29--
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