Ignore SIGPIPE (#3627)

This replicates what the Rust runtime does, and matches what Rust code
expects, for example when writing to a socket which is no longer
connected to the remote end.

src/main.cpp

@@ -29,6 +29,7 @@
 
 #include <Context.h>
 #include <rust/cxx.h>
+#include <signal.h>
 
 #include <cstring>
 #include <iostream>
@@ -39,6 +40,10 @@
 int main(int argc, const char** argv) {
   int status{0};
 
+  // Ignore SIGPIPE from writes to network sockets after the remote end has hung
+  // up. Rust code expects this, and the Rust runtime ignores this signal at startup.
+  signal(SIGPIPE, SIG_IGN);
+
   Context globalContext;
   Context::setContext(&globalContext);