From c4b69a107719caccdd415ed85a554898de9acc6d Mon Sep 17 00:00:00 2001
From: Rui Ueyama <ruiu@cs.stanford.edu>
Date: Mon, 11 Mar 2024 16:03:41 +0900
Subject: [PATCH] Re-throw a signal

Previously, mold exists silently when it gets killed by SIGSEGV.
This change makes it verbose; now the parent process would report
an error.
---
 common/main.cc | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/common/main.cc b/common/main.cc
index 1cabab4ce3..ee8db071ce 100644
--- a/common/main.cc
+++ b/common/main.cc
@@ -130,6 +130,7 @@ static void sighandler(int signo, siginfo_t *info, void *ucontext) {
   static std::mutex mu;
   std::scoped_lock lock{mu};
 
+  // Handle disk full error
   switch (signo) {
   case SIGSEGV:
   case SIGBUS:
@@ -145,7 +146,12 @@ static void sighandler(int signo, siginfo_t *info, void *ucontext) {
   }
   }
 
-  _exit(1);
+  // Re-throw the signal
+  signal(SIGSEGV, SIG_DFL);
+  signal(SIGBUS, SIG_DFL);
+  signal(SIGABRT, SIG_DFL);
+
+  raise(signo);
 }
 
 void install_signal_handler() {