tree 7d4c744c7e5ba97a73d080b0648ed3c0f69174a6
parent 72889c5f49ffd631f5edb7e35053e2489b5b50d2
author Saleem Abdulrasool <compnerd@compnerd.org> 1568994822 +0000
committer Saleem Abdulrasool <compnerd@compnerd.org> 1568994822 +0000

Unwind: prevent unw_get_proc_info from returning stale data

If unwind info is not available at the current IP, unw_get_proc_info should
return a zero-filled structure rather than the info of the previous IP.

This change also makes unw_get_proc_info return UNW_ENOINFO instead of
UNW_ESUCCESS.

Patch by Amanieu d'Antras!

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@372407 91177308-0d34-0410-b5e6-96231b3b80d8