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| author | Aliaksey Kandratsenka <alk@tut.by> | 2015-09-28 10:27:49 -0700 |
|---|---|---|
| committer | Aliaksey Kandratsenka <alkondratenko@gmail.com> | 2015-10-05 20:56:28 -0700 |
| commit | 5b62d38329f04ee30fb475a36b552c1ebc4e1e79 (patch) | |
| tree | da257b65f3ad494b49e226ee163691b5b821c6d6 | |
| parent | 7b9ded722e4cef9a44b8d8bfa80d3e1e108cf590 (diff) | |
| download | gperftools-5b62d38329f04ee30fb475a36b552c1ebc4e1e79.tar.gz | |
avoid checking for dup. entries on empty backtrace
This might fix issue #721. But it is right thing to do regardless. Since
if depth is 0 we'll be reading random "garbage" on the stack.
| -rw-r--r-- | src/profiler.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/profiler.cc b/src/profiler.cc index b862ae6..f4f5990 100644 --- a/src/profiler.cc +++ b/src/profiler.cc @@ -360,7 +360,7 @@ void CpuProfiler::prof_handler(int sig, siginfo_t*, void* signal_ucontext, 3, signal_ucontext); void **used_stack; - if (stack[1] == stack[0]) { + if (depth > 0 && stack[1] == stack[0]) { // in case of non-frame-pointer-based unwinding we will get // duplicate of PC in stack[1], which we don't want used_stack = stack + 1; |