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Revert "Use _Unwind_Backtrace on Apple platforms." 

This reverts commit 63165f6ae3bac1623be36d4b3ce63afa1d51a30a.

After making this change, I discovered that _Unwind_Backtrace is
unable to unwind past a signal handler after an assertion failure.
I filed a bug report about that issue in rdar://29866587 but even if
we get a fix soon, it will be awhile before it get released.

llvm-svn: 291207
This commit is contained in:
Bob Wilson 2017-01-06 02:26:33 +00:00
parent d39ead4105
commit 37df90a474
1 changed files with 1 additions and 1 deletions
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2
llvm/lib/Support/Unix/Signals.inc
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@ -48,7 +48,7 @@
// _Unwind_Backtrace function, but on FreeBSD the configure test passes
// despite the function not existing, and on Android, <unwind.h> conflicts
// with <link.h>.
#if defined(__GLIBC__) || defined(__APPLE__)
#ifdef __GLIBC__
#include <unwind.h>
#else
#undef HAVE__UNWIND_BACKTRACE