bjoernager/rust
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add nice alt fmt for debug

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This commit is contained in:
Jane Lusby 2020-02-10 17:42:04 -08:00
parent 230ed3ea75
commit de25048a23
1 changed files with 6 additions and 6 deletions
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12
src/libstd/backtrace.rs
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@ -186,23 +186,23 @@ impl fmt::Debug for Backtrace {
impl fmt::Debug for BacktraceSymbol { impl fmt::Debug for BacktraceSymbol {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result { fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
let mut dbg = fmt.debug_map(); write!(fmt, "{{ ")?;
if let Some(fn_name) = self.name.as_ref().map(|b| backtrace::SymbolName::new(b)) { if let Some(fn_name) = self.name.as_ref().map(|b| backtrace::SymbolName::new(b)) {
dbg.entry(&"fn", &format_args!("\"{}\"", fn_name)); write!(fmt, "fn: \"{:?}\"", fn_name)?;
} else { } else {
dbg.entry(&"fn", &"<unknown>"); write!(fmt, "fn: \"<unknown>\"")?;
} }
if let Some(fname) = self.filename.as_ref() { if let Some(fname) = self.filename.as_ref() {
dbg.entry(&"file", fname); write!(fmt, ", file: {:?}", fname)?;
} }
if let Some(line) = self.lineno.as_ref() { if let Some(line) = self.lineno.as_ref() {
dbg.entry(&"line", line); write!(fmt, ", line: {:?}", line)?;
} }
dbg.finish() write!(fmt, " }}")
} }
} }