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ICU-6132 Check for memory allocation error in CompoundTransliterator.

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X-SVN-Rev: 23196
This commit is contained in:
Michael Ow 2008-01-09 21:00:11 +00:00
parent 7636e40123
commit a9d9611f99
1 changed files with 46 additions and 9 deletions
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43
icu4c/source/i18n/cpdtrans.cpp
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@ -1,6 +1,6 @@
/*
**********************************************************************
* Copyright (C) 1999-2006, International Business Machines
* Copyright (C) 1999-2008, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
* Date Name Description
@ -282,18 +282,38 @@ void CompoundTransliterator::freeTransliterators(void) {
CompoundTransliterator& CompoundTransliterator::operator=(
const CompoundTransliterator& t) {
Transliterator::operator=(t);
int32_t i;
int32_t i = 0;
UBool failed = FALSE;
if (trans != NULL) {
for (i=0; i<count; ++i) {
delete trans[i];
trans[i] = 0;
}
}
if (t.count > count) {
if (trans != NULL) {
uprv_free(trans);
}
trans = (Transliterator **)uprv_malloc(t.count * sizeof(Transliterator *));
}
count = t.count;
if (trans != NULL) {
for (i=0; i<count; ++i) {
trans[i] = t.trans[i]->clone();
if (trans[i] == NULL) {
failed = TRUE;
break;
}
}
}
// if memory allocation failed delete backwards trans array
if (failed && i > 0) {
int32_t n;
for (n = i-1; n >= 0; n--) {
uprv_free(trans[n]);
trans[n] = NULL;
}
}
numAnonymousRBTs = t.numAnonymousRBTs;
return *this;
@ -326,8 +346,25 @@ const Transliterator& CompoundTransliterator::getTransliterator(int32_t index) c
void CompoundTransliterator::setTransliterators(Transliterator* const transliterators[],
int32_t transCount) {
Transliterator** a = (Transliterator **)uprv_malloc(transCount * sizeof(Transliterator *));
for (int32_t i=0; i<transCount; ++i) {
if (a == NULL) {
return;
}
int32_t i = 0;
UBool failed = FALSE;
for (i=0; i<transCount; ++i) {
a[i] = transliterators[i]->clone();
if (a[i] == NULL) {
failed = TRUE;
break;
}
}
if (failed && i > 0) {
int32_t n;
for (n = i-1; n >= 0; n--) {
uprv_free(a[n]);
a[n] = NULL;
}
return;
}
adoptTransliterators(a, transCount);
}