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Pass fmt::Arguments by reference to PanicInfo and PanicMessage #129491

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merged 1 commit into from
Sep 18, 2024
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Pass fmt::Arguments by reference to PanicInfo and PanicMessage #129491

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Pass fmt::Arguments by reference to PanicInfo and PanicMessage
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@StackOverflowExcept1on
StackOverflowExcept1on committed Aug 23, 2024
commit c2fdb3435fea8d30ef059dffd48332a537274005
12 changes: 6 additions & 6 deletions library/core/src/panic/panic_info.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ use crate::panic::Location;
#[stable(feature = "panic_hooks", since = "1.10.0")]
#[derive(Debug)]
pub struct PanicInfo<'a> {
message: fmt::Arguments<'a>,
message: &'a fmt::Arguments<'a>,
location: &'a Location<'a>,
can_unwind: bool,
force_no_backtrace: bool,
Expand All @@ -26,13 +26,13 @@ pub struct PanicInfo<'a> {
/// See [`PanicInfo::message`].
#[stable(feature = "panic_info_message", since = "1.81.0")]
pub struct PanicMessage<'a> {
message: fmt::Arguments<'a>,
message: &'a fmt::Arguments<'a>,
}

impl<'a> PanicInfo<'a> {
#[inline]
pub(crate) fn new(
message: fmt::Arguments<'a>,
message: &'a fmt::Arguments<'a>,
location: &'a Location<'a>,
can_unwind: bool,
force_no_backtrace: bool,
Expand Down Expand Up @@ -146,7 +146,7 @@ impl Display for PanicInfo<'_> {
formatter.write_str("panicked at ")?;
self.location.fmt(formatter)?;
formatter.write_str(":\n")?;
formatter.write_fmt(self.message)?;
formatter.write_fmt(*self.message)?;
Ok(())
}
}
Expand Down Expand Up @@ -177,14 +177,14 @@ impl<'a> PanicMessage<'a> {
impl Display for PanicMessage<'_> {
#[inline]
fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_fmt(self.message)
formatter.write_fmt(*self.message)
}
}

#[stable(feature = "panic_info_message", since = "1.81.0")]
impl fmt::Debug for PanicMessage<'_> {
#[inline]
fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_fmt(self.message)
formatter.write_fmt(*self.message)
}
}
4 changes: 2 additions & 2 deletions library/core/src/panicking.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -64,7 +64,7 @@ pub const fn panic_fmt(fmt: fmt::Arguments<'_>) -> ! {
}

let pi = PanicInfo::new(
fmt,
&fmt,
Location::caller(),
/* can_unwind */ true,
/* force_no_backtrace */ false,
Expand Down Expand Up @@ -102,7 +102,7 @@ pub const fn panic_nounwind_fmt(fmt: fmt::Arguments<'_>, force_no_backtrace: boo

// PanicInfo with the `can_unwind` flag set to false forces an abort.
let pi = PanicInfo::new(
fmt,
&fmt,
Location::caller(),
/* can_unwind */ false,
force_no_backtrace,
Expand Down
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