diff options
Diffstat (limited to 'libjava/java')
| -rw-r--r-- | libjava/java/lang/natString.cc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libjava/java/lang/natString.cc b/libjava/java/lang/natString.cc index a14f5de..c8f3129 100644 --- a/libjava/java/lang/natString.cc +++ b/libjava/java/lang/natString.cc @@ -833,7 +833,10 @@ java::lang::String::substring (jint beginIndex, jint endIndex) if (beginIndex == 0 && endIndex == count) return this; jint newCount = endIndex - beginIndex; - if (newCount <= 8) // Optimization, mainly for GC. + // For very small strings, just allocate a new one. For other + // substrings, allocate a new one unless the substring is over half + // of the original string. + if (newCount <= 8 || newCount < (count >> 1)) return JvNewString(JvGetStringChars(this) + beginIndex, newCount); jstring s = new String(); s->data = data; |