util: log stack trace on crash

src/common/util.cpp

@@ -43,6 +43,7 @@ using namespace epee;
 
 #include "crypto/crypto.h"
 #include "util.h"
+#include "stack_trace.h"
 #include "memwipe.h"
 #include "cryptonote_config.h"
 #include "net/http_client.h"                        // epee::net_utils::...
@@ -560,10 +561,48 @@ std::string get_nix_version_display_string()
     }
     return false;
   }
+
+#ifdef STACK_TRACE
+#ifdef _WIN32
+  // https://stackoverflow.com/questions/1992816/how-to-handle-seg-faults-under-windows
+  static LONG WINAPI windows_crash_handler(PEXCEPTION_POINTERS pExceptionInfo)
+  {
+    tools::log_stack_trace("crashing");
+    exit(1);
+    return EXCEPTION_CONTINUE_SEARCH;
+  }
+  static void setup_crash_dump()
+  {
+    SetUnhandledExceptionFilter(windows_crash_handler);
+  }
+#else
+  static void posix_crash_handler(int signal)
+  {
+    tools::log_stack_trace(("crashing with fatal signal " + std::to_string(signal)).c_str());
+#ifdef NDEBUG
+    _exit(1);
+#else
+    abort();
+#endif
+  }
+  static void setup_crash_dump()
+  {
+    signal(SIGSEGV, posix_crash_handler);
+    signal(SIGBUS, posix_crash_handler);
+    signal(SIGILL, posix_crash_handler);
+    signal(SIGFPE, posix_crash_handler);
+  }
+#endif
+#else
+  static void setup_crash_dump() {}
+#endif
+
   bool on_startup()
   {
     mlog_configure("", true);
 
+    setup_crash_dump();
+
     sanitize_locale();
 
 #ifdef __GLIBC__