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Darwin's backtrace() function does not work with sigaltstack (which was enabled when available with r270395) — it does a sanity check to make sure that the current frame pointer is within the expected stack area (which it is not when using an alternate stack) and gives up otherwise. The alternative of _Unwind_Backtrace seems to work fine on macOS, so use that when backtrace() fails. Note that we then use backtrace_symbols_fd() with the addresses from _Unwind_Backtrace, but I’ve tested that and it also seems to work fine. rdar://problem/28646552 llvm-svn: 286851 |
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| .. | ||
| COM.inc | ||
| Host.inc | ||
| Memory.inc | ||
| Mutex.inc | ||
| Path.inc | ||
| Process.inc | ||
| Program.inc | ||
| README.txt | ||
| RWMutex.inc | ||
| Signals.inc | ||
| ThreadLocal.inc | ||
| Unix.h | ||
| Watchdog.inc | ||
llvm/lib/Support/Unix README =========================== This directory provides implementations of the lib/System classes that are common to two or more variants of UNIX. For example, the directory structure underneath this directory could look like this: Unix - only code that is truly generic to all UNIX platforms Posix - code that is specific to Posix variants of UNIX SUS - code that is specific to the Single Unix Specification SysV - code that is specific to System V variants of UNIX As a rule, only those directories actually needing to be created should be created. Also, further subdirectories could be created to reflect versions of the various standards. For example, under SUS there could be v1, v2, and v3 subdirectories to reflect the three major versions of SUS.