panicking: improve hint for Miri's RUST_BACKTRACE behavior

RalfJung · RalfJung · commit a6ea125cb0ea · 2024-08-24T14:38:50.000+02:00
diff --git a/std/src/panicking.rs b/std/src/panicking.rs
@@ -275,7 +275,7 @@ fn default_hook(info: &PanicHookInfo<'_>) {
                     if cfg!(miri) {
                         let _ = writeln!(
                             err,
-                            "note: in Miri, you may have to set `-Zmiri-env-forward=RUST_BACKTRACE` \
+                            "note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` \
                                 for the environment variable to have an effect"
                         );
                     }

Original file line number	Diff line number	Diff line change
`@@ -275,7 +275,7 @@ fn default_hook(info: &PanicHookInfo<'_>) {`
`275`	`275`	`if cfg!(miri) {`
`276`	`276`	`let _ = writeln!(`
`277`	`277`	`err,`
`278`		- "note: in Miri, you may have to set `-Zmiri-env-forward=RUST_BACKTRACE` \
	`278`	+ "note: in Miri, you may have to set `MIRIFLAGS=-Zmiri-env-forward=RUST_BACKTRACE` \
`279`	`279`	`for the environment variable to have an effect"`
`280`	`280`	`);`
`281`	`281`	`}`