diff options
Diffstat (limited to 'llvm/lib/Support/Unix/Signals.inc')
| -rw-r--r-- | llvm/lib/Support/Unix/Signals.inc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Support/Unix/Signals.inc b/llvm/lib/Support/Unix/Signals.inc index 057bcab1..e7696c2 100644 --- a/llvm/lib/Support/Unix/Signals.inc +++ b/llvm/lib/Support/Unix/Signals.inc @@ -112,6 +112,12 @@ static void RegisterHandler(int Signal) { } static void RegisterHandlers() { + // We need to dereference the signals mutex during handler registration so + // that we force its construction. This is to prevent the first use being + // during handling an actual signal because you can't safely call new in a + // signal handler. + *SignalsMutex; + // If the handlers are already registered, we're done. if (NumRegisteredSignals != 0) return; |