The code of plugin is out of sync with current state of MemoryInstrumentation code.
Created attachment 180798 [details] Patch
Comment on attachment 180798 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=180798&action=review > Tools/clang/ReportMemoryUsagePlugin/ReportMemoryUsage.cpp:201 > + " info.addRawBuffer(m_pointer, m_length);\n" You should also add m_length field.
Committed r138530: <http://trac.webkit.org/changeset/138530>