Panicking infra uses &core::panic::Location.

This allows us to remove `static_panic_msg` from the SSA<->LLVM
boundary, along with its fat pointer representation for &str.

Also changes the signature of PanicInfo::internal_contructor to
avoid copying.

Closes #65856.

1 files changed, 4 insertions, 8 deletions

diff --git a/src/libstd/panicking.rs b/src/libstd/panicking.rs
index 619b1820190..f76969146fd 100644
--- a/src/libstd/panicking.rs
+++ b/src/libstd/panicking.rs
@@ -323,10 +323,8 @@ pub fn begin_panic_fmt(msg: &fmt::Arguments<'_>,
     }
 
     let (file, line, col) = *file_line_col;
-    let info = PanicInfo::internal_constructor(
-        Some(msg),
-        Location::internal_constructor(file, line, col),
-    );
+    let location = Location::internal_constructor(file, line, col);
+    let info = PanicInfo::internal_constructor(Some(msg), &location);
     continue_panic_fmt(&info)
 }
 
@@ -453,10 +451,8 @@ fn rust_panic_with_hook(payload: &mut dyn BoxMeUp,
     }
 
     unsafe {
-        let mut info = PanicInfo::internal_constructor(
-            message,
-            Location::internal_constructor(file, line, col),
-        );
+        let location = Location::internal_constructor(file, line, col);
+        let mut info = PanicInfo::internal_constructor(message, &location);
         HOOK_LOCK.read();
         match HOOK {
             // Some platforms know that printing to stderr won't ever actually