diff --git a/icu4c/source/common/unistr.cpp b/icu4c/source/common/unistr.cpp
index 36b472b620d..52fddf32214 100644
--- a/icu4c/source/common/unistr.cpp
+++ b/icu4c/source/common/unistr.cpp
@@ -1,6 +1,6 @@
 /*
 ******************************************************************************
-* Copyright (C) 1999-2007, International Business Machines Corporation and   *
+* Copyright (C) 1999-2008, International Business Machines Corporation and   *
 * others. All Rights Reserved.                                               *
 ******************************************************************************
 *
@@ -1138,9 +1138,12 @@ UnicodeString::copy(int32_t start, int32_t limit, int32_t dest) {
         return; // Nothing to do; avoid bogus malloc call
     }
     UChar* text = (UChar*) uprv_malloc( sizeof(UChar) * (limit - start) );
-    extractBetween(start, limit, text, 0);
-    insert(dest, text, 0, limit - start);    
-    uprv_free(text);
+    // Check to make sure text is not null.
+    if (text != NULL) {
+	    extractBetween(start, limit, text, 0);
+	    insert(dest, text, 0, limit - start);    
+	    uprv_free(text);
+    }
 }
 
 /**
diff --git a/icu4c/source/i18n/unesctrn.cpp b/icu4c/source/i18n/unesctrn.cpp
index 45ced8b1e9b..c3d848d06e9 100644
--- a/icu4c/source/i18n/unesctrn.cpp
+++ b/icu4c/source/i18n/unesctrn.cpp
@@ -1,6 +1,6 @@
 /*
  **********************************************************************
- *   Copyright (c) 2001-2004, International Business Machines
+ *   Copyright (c) 2001-2008, International Business Machines
  *   Corporation and others.  All Rights Reserved.
  **********************************************************************
  *   Date        Name        Description
@@ -82,7 +82,10 @@ static UChar* copySpec(const UChar* spec) {
     }
     ++len;
     UChar *result = (UChar *)uprv_malloc(len*sizeof(UChar));
-    uprv_memcpy(result, spec, len*sizeof(result[0]));
+    // Check for memory allocation error. 
+    if (result != NULL) {
+    	uprv_memcpy(result, spec, len*sizeof(result[0]));
+    }
     return result;
 }
 
diff --git a/icu4c/source/i18n/unum.cpp b/icu4c/source/i18n/unum.cpp
index 1ba90922843..513bfb87cbd 100644
--- a/icu4c/source/i18n/unum.cpp
+++ b/icu4c/source/i18n/unum.cpp
@@ -1,6 +1,6 @@
 /*
 *******************************************************************************
-*   Copyright (C) 1996-2007, International Business Machines
+*   Copyright (C) 1996-2008, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *******************************************************************************
 * Modification History:
@@ -271,8 +271,13 @@ unum_formatDoubleCurrency(const UNumberFormat* fmt,
     if (pos != 0) {
         fp.setField(pos->field);
     }
-
-    Formattable n(new CurrencyAmount(number, currency, *status));
+    CurrencyAmount *tempCurrAmnt = new CurrencyAmount(number, currency, *status);
+    // Check for null pointer.
+    if (tempCurrAmnt == NULL) {
+    	*status = U_MEMORY_ALLOCATION_ERROR;
+    	return -1;
+    }
+    Formattable n(tempCurrAmnt);
     ((const NumberFormat*)fmt)->format(n, res, fp, *status);
     
     if (pos != 0) {