From ee038d445b3d44d81d53d20570c23657175ed0da Mon Sep 17 00:00:00 2001
From: niansa <niansa@lyllia>
Date: Wed, 29 Apr 2020 16:41:50 +0200
Subject: [PATCH] Catch segmentation fault to print stacktrace

---
 main.cpp | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/main.cpp b/main.cpp
index e41e332..f8abdb9 100644
--- a/main.cpp
+++ b/main.cpp
@@ -26,6 +26,8 @@ along with pilang.  If not, see <https://www.gnu.org/licenses/>.
 #include <csignal>
 #include <cstdio>
 #include <unistd.h>
+#include <signal.h>
+#include <execinfo.h>
 
 #include <curlpp/cURLpp.hpp>
 #include <curlpp/Easy.hpp>
@@ -41,9 +43,19 @@ static std::string room;
 
 
 void panic(std::string message) {
+    // Print message
     std::cerr << std::endl << "An unhandled exception occured:" << std::endl << message << std::endl;
+    // Print stacktrace
+    void *array[10];
+    int size = backtrace(array, 10);
+    std::cerr << std::endl << "Stacktrace:" << std::endl;
+    backtrace_symbols_fd(array, size, STDERR_FILENO);
+    // Abort
     abort();
 }
+void sigsegv_panic(int) {
+    panic("Segmentation fault received!");
+}
 
 
 std::string ltrim(const std::string &s) {
@@ -303,6 +315,8 @@ std::string get_rss_url(GumboNode *node) { // Currently unused
 
 
 int main(int argc, char *argv[]) {
+    // Catch SIGSEGV
+    signal(SIGSEGV, sigsegv_panic);
     // Show license note if --license was given as first argument
     if (argc > 1 and !strncmp(argv[1], "--license", 9)) {
         std::cout << "CommSyFuse  Copyright (C) 2020  niansa" << std::endl;
@@ -379,8 +393,10 @@ int main(int argc, char *argv[]) {
         // Await user input
         std::cout << "? " << std::flush;
         std::getline (std::cin,userinstr);
-        // Check string input options first5
-        if (userinstr == "r") {
+        // Check string input options first
+        if (userinstr == "") {
+            continue;
+        } else if (userinstr == "r") {
             execve(argv[0], argv, nullptr);
         }
         // Try to convert input to unsigned long