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prettier miri backtrace printing

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This commit is contained in:
Ralf Jung 2018-11-14 17:48:17 +01:00
parent 57a7c85f93
commit fb5135a6fc
1 changed files with 10 additions and 3 deletions
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13
src/librustc/mir/interpret/error.rs
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@ -191,16 +191,23 @@ fn print_backtrace(backtrace: &mut Backtrace) -> String {
write!(trace_text, "backtrace frames: {}\n", backtrace.frames().len()).unwrap();
'frames: for (i, frame) in backtrace.frames().iter().enumerate() {
if frame.symbols().is_empty() {
write!(trace_text, "{}: no symbols\n", i).unwrap();
write!(trace_text, " {}: no symbols\n", i).unwrap();
}
let mut first = true;
for symbol in frame.symbols() {
write!(trace_text, "{}: ", i).unwrap();
if first {
write!(trace_text, " {}: ", i).unwrap();
first = false;
} else {
let len = i.to_string().len();
write!(trace_text, " {} ", " ".repeat(len)).unwrap();
}
if let Some(name) = symbol.name() {
write!(trace_text, "{}\n", name).unwrap();
} else {
write!(trace_text, "<unknown>\n").unwrap();
}
write!(trace_text, "\tat ").unwrap();
write!(trace_text, " at ").unwrap();
if let Some(file_path) = symbol.filename() {
write!(trace_text, "{}", file_path.display()).unwrap();
} else {