commit fd8cdc8a88eb40e92408262fc83892fb974f124a
author David Tolnay <dtolnay@gmail.com> Sat Jan 19 19:23:59 2019 -0800
committer David Tolnay <dtolnay@gmail.com> Sat Jan 19 19:35:20 2019 -0800
tree 4028a97fa6f32cf8cac74b37d83767c0345a680a
parent 02b42d4ce670c9530d9e291b836a4eeadc8e71e3

Omit missing spans from Debug output

src/fallback.rs

diff --git a/src/fallback.rs b/src/fallback.rs
index baeed69..7f3cc4e 100644
--- a/src/fallback.rs
+++ b/src/fallback.rs
@@ -414,6 +414,12 @@
     }
 }
 
+pub fn debug_span_field_if_nontrivial(debug: &mut fmt::DebugStruct, span: Span) {
+    if cfg!(procmacro2_semver_exempt) {
+        debug.field("span", &span);
+    }
+}
+
 #[derive(Clone)]
 pub struct Group {
     delimiter: Delimiter,