The Tor Browser / file revision

 #  ***********************************************************************

 #  * COPYRIGHT:

 #  * Copyright (c) 2004-2006, International Business Machines Corporation

 #  * and others. All Rights Reserved.

 #  ***********************************************************************

 #

 # This perl script checks for correct memory function usage in ICU library code.

 # It works with Linux builds of ICU using gcc.

 #

 #  To run it,

 #    1.  Build ICU

 #    2.  cd  icu/source

 #    3.  perl ICUMemCheck.pl

 #

 #  All object files containing direct references to C or C++ runtime library memory

 #    functions will be listed in the output.

 #

 #  For ICU 3.6, the expected output is

 #    common/uniset.o          U operator delete(void*)

 #    common/unifilt.o         U operator delete(void*)

 #    common/cmemory.o         U malloc

 #    common/cmemory.o         U free

 #    i18n/strrepl.o           U operator delete(void*)

 #    layout/LEFontInstance.o         U operator delete(void*)

 #    layout/LEGlyphStorage.o         U operator delete(void*)

 #    layout/LayoutEngine.o    U operator delete(void*)

 #

 #  cmemory.c          Expected failures from uprv_malloc, uprv_free implementation.

 #  uniset.cpp         Fails because of SymbolTable::~SymbolTable()

 #  unifilt.cpp        Fails because of UnicodeMatcher::~UnicodeMatcher()

 #  strrepl.cpp        Fails because of UnicodeReplacer::~UnicodeReplacer()

 #  LayoutEngine.cpp   Fails because of LEGlyphFilter::~LEGlyphFilter()

 #  LEGlyphStorage.cpp Fails because of LEInsertionCallback::~LEInsertionCallback()

 #  LEFontInstance.cpp Fails because of LECharMapper::~LECharMapper

 #

 #  To verify that no additional problems exist in the .cpp files, #ifdef out the

 #  offending destructors, rebuild icu, and re-run the tool.  The problems should

 #  be gone.

 #

 #  The problem destructors all are for mix-in style interface classes.

 #  These classes can not derive from UObject or UMemory because of multiple-inheritance

 #  problems, so they don't get the ICU memory functions.  The delete code

 #  in the destructors will never be called because stand-alone instances of

 #  the classes cannot exist.

 #

 $fileNames = `find common i18n layout io -name "*.o" -print`;

 foreach $f (split('\n', $fileNames)) {

    $symbols = `nm -u -C $f`;

    if ($symbols =~ /U +operator delete\(void\*\)/) {

       print "$f 	$&\n";

    }

    if ($symbols =~ /U +operator delete\[\]\(void\*\)/) {

       print "$f 	$&\n";

    }

    if ($symbols =~ /U +operator new\(unsigned int\)/) {

       print "$f 	$&\n";

    }

    if ($symbols =~ /U +operator new\[\]\(unsigned int\)/) {

       print "$f 	$&\n";

    }

    if ($symbols =~ /U +malloc.*/) {

       print "$f 	$&\n";

    }

    if ($symbols =~ /U +free.*/) {

       print "$f 	$&\n";

    }

 }