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[llvm/Support] Make more DataExtractor methods error-aware

Authored by labath on Apr 2 2020, 7:06 AM.



This patch adds the optional Error argument, and the Cursor variants to
more DataExtractor methods. The functions now behave the same way as
other error-aware functions (they set the error when they fail, and
don't do anything if the error is already set).

I have merged the LEB128 implementations via a template (similarly to
how fixed-size functions are handled) to reduce code duplication.

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labath created this revision.Apr 2 2020, 7:06 AM
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dblaikie accepted this revision.Apr 2 2020, 4:04 PM

Sounds good - thanks!

This revision is now accepted and ready to land.Apr 2 2020, 4:04 PM
This revision was automatically updated to reflect the committed changes.