Check for empty substring.
Review URL: http://codereview.chromium.org/7237023 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8419 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
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11
src/heap.cc
11
src/heap.cc
@ -2634,12 +2634,13 @@ MaybeObject* Heap::AllocateConsString(String* first, String* second) {
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MaybeObject* Heap::AllocateSubString(String* buffer,
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int start,
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int end,
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PretenureFlag pretenure) {
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int start,
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int end,
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PretenureFlag pretenure) {
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int length = end - start;
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if (length == 1) {
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if (length == 0) {
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return empty_string();
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} else if (length == 1) {
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return LookupSingleCharacterStringFromCode(buffer->Get(start));
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} else if (length == 2) {
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// Optimization for 2-byte strings often used as keys in a decompression
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