From 23f64e119c08238803c85dec012921745d8098f0 Mon Sep 17 00:00:00 2001
From: "Christoph J. Scherr" <Christoph.Scherr@newtec.de>
Date: Fri, 12 Jan 2024 15:39:54 +0100
Subject: [PATCH] panic-calm

---
 Cargo.lock                     |  4 ++++
 Cargo.toml                     |  2 ++
 members/panic-calm/Cargo.toml  |  8 ++++++++
 members/panic-calm/src/main.rs | 27 +++++++++++++++++++++++++++
 4 files changed, 41 insertions(+)
 create mode 100644 members/panic-calm/Cargo.toml
 create mode 100644 members/panic-calm/src/main.rs

diff --git a/Cargo.lock b/Cargo.lock
index 916a993..cbcd2cc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -874,6 +874,10 @@ version = "11.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0ab1bc2a289d34bd04a330323ac98a1b4bc82c9d9fcb1e66b63caa84da26b575"
 
+[[package]]
+name = "panic-calm"
+version = "0.1.0"
+
 [[package]]
 name = "peg"
 version = "0.6.3"
diff --git a/Cargo.toml b/Cargo.toml
index 8417147..2caac63 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,6 +3,7 @@ members = [
   ".",
   "members/criterion-demo",
   "members/cucumber-demo",
+  "members/panic-calm",
   "members/revsqrt",
   "members/serde-json-demo",
   "members/slog-demo",
@@ -14,6 +15,7 @@ default-members = [
   "members/serde-json-demo",
   "members/slog-demo",
   "members/cucumber-demo",
+  "members/panic-calm",
 ]
 
 [package]
diff --git a/members/panic-calm/Cargo.toml b/members/panic-calm/Cargo.toml
new file mode 100644
index 0000000..c964210
--- /dev/null
+++ b/members/panic-calm/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "panic-calm"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/members/panic-calm/src/main.rs b/members/panic-calm/src/main.rs
new file mode 100644
index 0000000..708dbb0
--- /dev/null
+++ b/members/panic-calm/src/main.rs
@@ -0,0 +1,27 @@
+use std::{io::Write, panic};
+fn inner() {
+    let mut counter = 0u8;
+    loop {
+        // will eventually panic when overflowing?
+        counter += 1;
+        print!("{counter}\t");
+        if counter % 8 == 0 { println!() }
+        if counter == 255 {
+            // so panic will look fancier :)
+            println!()
+        }
+    }
+}
+
+fn main() {
+    // will not catch all panics, only ones that unwind
+    let panic = panic::catch_unwind(|| {
+        inner();
+    });
+    if panic.is_err() {
+        dbg!(&panic);
+        dbg!(&panic.as_ref().unwrap_err().type_id());
+        println!("recovered from a panic");
+    }
+    else {println!("no panic on the titanic")}
+}