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| author | kennytm <kennytm@gmail.com> | 2018-03-06 16:25:41 +0800 |
|---|---|---|
| committer | kennytm <kennytm@gmail.com> | 2018-03-06 20:52:32 +0800 |
| commit | b691c521bb079dda26b9d37d00662fafeb87f783 (patch) | |
| tree | 5c297b7f1da341d4169d92835b6c548a7c304083 /src/libsyntax_pos/lib.rs | |
| parent | 7dc3f17ef999940a4337a5ea5823acb5c3da65e4 (diff) | |
| parent | 2e7e68b76223b9f14b54852584a5334f33a8798d (diff) | |
| download | rust-b691c521bb079dda26b9d37d00662fafeb87f783.tar.gz rust-b691c521bb079dda26b9d37d00662fafeb87f783.zip | |
Rollup merge of #48754 - leodasvacas:while-let-all-the-things, r=rkruppe
while let all the things
Diffstat (limited to 'src/libsyntax_pos/lib.rs')
| -rw-r--r-- | src/libsyntax_pos/lib.rs | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/src/libsyntax_pos/lib.rs b/src/libsyntax_pos/lib.rs index 9f746adbe65..ed9eb5d5c92 100644 --- a/src/libsyntax_pos/lib.rs +++ b/src/libsyntax_pos/lib.rs @@ -322,12 +322,7 @@ impl Span { pub fn macro_backtrace(mut self) -> Vec<MacroBacktrace> { let mut prev_span = DUMMY_SP; let mut result = vec![]; - loop { - let info = match self.ctxt().outer().expn_info() { - Some(info) => info, - None => break, - }; - + while let Some(info) = self.ctxt().outer().expn_info() { let (pre, post) = match info.callee.format { ExpnFormat::MacroAttribute(..) => ("#[", "]"), ExpnFormat::MacroBang(..) => ("", "!"), |