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Georgii Rymar e2b7bdef1d [DebugInfo/DWARF] - Do not hang when CFI are truncated.
Currently when the .eh_frame section is truncated so that
CFI instructions can't be read, it is possible to enter
an infinite loop.

It happens because `CFIProgram::parse` does not handle errors properly.
This patch fixes the issue.

Differential revision: https://reviews.llvm.org/D82017
2020-06-23 14:39:24 +03:00
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