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1#  ***********************************************************************
2#  * COPYRIGHT:
3#  * Copyright (c) 2004-2006, International Business Machines Corporation
4#  * and others. All Rights Reserved.
5#  ***********************************************************************
6#
7# This perl script checks for correct memory function usage in ICU library code.
8# It works with Linux builds of ICU using gcc.
9#
10#  To run it,
11#    1.  Build ICU
12#    2.  cd  icu/source
13#    3.  perl ICUMemCheck.pl
14#
15#  All object files containing direct references to C or C++ runtime library memory
16#    functions will be listed in the output.
17#
18#  For ICU 3.6, the expected output is
19#    common/uniset.o          U operator delete(void*)
20#    common/unifilt.o         U operator delete(void*)
21#    common/cmemory.o         U malloc
22#    common/cmemory.o         U free
23#    i18n/strrepl.o           U operator delete(void*)
24#    layout/LEFontInstance.o         U operator delete(void*)
25#    layout/LEGlyphStorage.o         U operator delete(void*)
26#    layout/LayoutEngine.o    U operator delete(void*)
27#
28#  cmemory.c          Expected failures from uprv_malloc, uprv_free implementation.
29#  uniset.cpp         Fails because of SymbolTable::~SymbolTable()
30#  unifilt.cpp        Fails because of UnicodeMatcher::~UnicodeMatcher()
31#  strrepl.cpp        Fails because of UnicodeReplacer::~UnicodeReplacer()
32#  LayoutEngine.cpp   Fails because of LEGlyphFilter::~LEGlyphFilter()
33#  LEGlyphStorage.cpp Fails because of LEInsertionCallback::~LEInsertionCallback()
34#  LEFontInstance.cpp Fails because of LECharMapper::~LECharMapper
35#
36#  To verify that no additional problems exist in the .cpp files, #ifdef out the
37#  offending destructors, rebuild icu, and re-run the tool.  The problems should
38#  be gone.
39#
40#  The problem destructors all are for mix-in style interface classes.
41#  These classes can not derive from UObject or UMemory because of multiple-inheritance
42#  problems, so they don't get the ICU memory functions.  The delete code
43#  in the destructors will never be called because stand-alone instances of
44#  the classes cannot exist.
45#
46$fileNames = `find common i18n layout io -name "*.o" -print`;
47foreach $f (split('\n', $fileNames)) {
48   $symbols = `nm -u -C $f`;
49   if ($symbols =~ /U +operator delete\(void\*\)/) {
50      print "$f 	$&\n";
51   }
52   if ($symbols =~ /U +operator delete\[\]\(void\*\)/) {
53      print "$f 	$&\n";
54   }
55   if ($symbols =~ /U +operator new\(unsigned int\)/) {
56      print "$f 	$&\n";
57   }
58   if ($symbols =~ /U +operator new\[\]\(unsigned int\)/) {
59      print "$f 	$&\n";
60   }
61   if ($symbols =~ /U +malloc.*/) {
62      print "$f 	$&\n";
63   }
64   if ($symbols =~ /U +free.*/) {
65      print "$f 	$&\n";
66   }
67
68}
69