throw a diagnostic on sigaltstack() failure #2828

dankamongmen · Jan 2, 2025 · c6b13e0 · c6b13e0
1 parent a924ced
commit c6b13e0
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/lib/unixsig.c b/src/lib/unixsig.c
@@ -165,7 +165,9 @@ fatal_handler(int signo, siginfo_t* siginfo, void* v){
 void setup_alt_sig_stack(void){
   pthread_mutex_lock(&lock);
   if(alt_signal_stack.ss_sp){
-    sigaltstack(&alt_signal_stack, NULL);
+    if(sigaltstack(&alt_signal_stack, NULL)){
+      logerror("error installing alternate signal stack (%s)", strerror(errno));
+    }
   }
   pthread_mutex_unlock(&lock);
 }