[ https://issues.apache.org/jira/browse/THRIFT-1248?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Roger Meier resolved THRIFT-1248. --------------------------------- Resolution: Fixed Fix Version/s: 0.9.3 > pointer subtraction in TMemoryBuffer relies on undefined behavior > ----------------------------------------------------------------- > > Key: THRIFT-1248 > URL: https://issues.apache.org/jira/browse/THRIFT-1248 > Project: Thrift > Issue Type: Bug > Components: C++ - Library > Affects Versions: 0.5 > Reporter: Anatoly Fayngelerin > Assignee: James E. King, III > Fix For: 0.9.3 > > Attachments: 0_7_0_ptrdiff.patch > > > The ensureCanWrite function in TMemoryBuffer currently "rebases" the buffer > pointers by subtracting the original buffer pointer from the pointer newly > returned by realloc. While this seems to work fine on my linux setup(I > couldn't force a reproducer), pointer subtraction between pointers that we > allocated separately is an undefined operation. > I have run into problems with this on platforms other than linux. > I am attaching a patch that removes the undefined operation. -- This message was sent by Atlassian JIRA (v6.3.4#6332)