added custom panic hook (#1762)

Cargo.lock

@@ -1262,6 +1262,7 @@ version = "1.5.3"
 dependencies = [
  "ansi_term",
  "assert_cmd",
+ "backtrace",
  "clap 3.1.9",
  "color-backtrace",
  "colored",
@@ -1282,6 +1283,7 @@ dependencies = [
  "serde_json",
  "snarkvm-utilities 0.7.5 (git+https://github.com/AleoHQ/snarkVM.git?rev=51633e2)",
  "structopt",
+ "sys-info",
  "test_dir",
  "toml",
  "tracing",
@@ -2589,6 +2591,16 @@ dependencies = [
  "unicode-xid 0.2.2",
 ]
 
+[[package]]
+name = "sys-info"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b3a0d0aba8bf96a0e1ddfdc352fc53b3df7f39318c71854910c3c4b024ae52c"
+dependencies = [
+ "cc",
+ "libc",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.3.0"

Cargo.toml

@@ -59,6 +59,12 @@ version = "0.5.1"
 [dependencies.colored]
 version = "2.0"
 
+[dependencies.backtrace]
+version = "0.3.65"
+
+[dependencies.sys-info]
+version = "0.9.1"
+
 [dependencies.dirs]
 version = "4.0.0"
 

leo/main.rs

@@ -175,8 +175,38 @@ enum CommandOpts {
     // },
 }
 
+fn set_panic_hook() {
+    #[cfg(not(debug_assertions))]
+    std::panic::set_hook({
+        Box::new(move |e| {
+            println!(
+                "thread `{}` {}",
+                std::thread::current().name().unwrap_or("<unnamed>"),
+                e
+            );
+            println!("stack backtrace: \n{:?}", backtrace::Backtrace::new());
+            println!("error: internal compiler error: unexpected panic\n");
+            println!("note: the compiler unexpectedly panicked. this is a bug.\n");
+            println!("note: we would appreciate a bug report: https://github.com/AleoHQ/leo/issues/new?labels=bug,panic&template=bug.md&title=[Bug]\n");
+            println!(
+                "note: {} {} running on {} {}\n",
+                env!("CARGO_PKG_NAME"),
+                env!("CARGO_PKG_VERSION"),
+                sys_info::os_type().unwrap_or_else(|e| e.to_string()),
+                sys_info::os_release().unwrap_or_else(|e| e.to_string()),
+            );
+            println!(
+                "note: compiler args: {}\n",
+                std::env::args().collect::<Vec<_>>().join(" ")
+            );
+            println!("note: compiler flags: {:?}\n", Opt::from_args());
+        })
+    });
+}
+
 fn main() {
-    handle_error(run_with_args(Opt::from_args()))
+    set_panic_hook();
+    handle_error(run_with_args(Opt::from_args()));
 }
 
 /// Run command with custom build arguments.