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[lldb] Avoid resource leak

Authored by kwk on Oct 8 2019, 6:48 AM.



Before the pointer variable args_dict was assigned the result of an
allocation with new and then args_dict is passed to
GetValueForKeyAsDictionary which immediatly and unconditionally
assigns args_dict to nullptr:

bool GetValueForKeyAsDictionary(llvm::StringRef key,
                                Dictionary *&result) const {
  result = nullptr;

This caused a memory leak which was found in my coverity scan instance
under CID 224753:

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kwk created this revision.Oct 8 2019, 6:48 AM
Herald added a project: Restricted Project. · View Herald TranscriptOct 8 2019, 6:48 AM
teemperor accepted this revision.Oct 8 2019, 7:15 AM
teemperor added a subscriber: teemperor.

LGTM. Also, this whole function seems to have no tests. So if you find an easy way to test this, then please add a test to functionalities/breakpoint/scripted_bkpt/ You can also check this in as-is if the test turns out to be too complicated (I'm not a big fan of the whole "you touched my spaghetti so you also have to come up with a way to test the whole thing".)

This revision is now accepted and ready to land.Oct 8 2019, 7:15 AM
This revision was automatically updated to reflect the committed changes.