diff options
Diffstat (limited to 'compiler/rustc_mir_transform/src')
| -rw-r--r-- | compiler/rustc_mir_transform/src/coverage/mod.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_mir_transform/src/coverage/mod.rs b/compiler/rustc_mir_transform/src/coverage/mod.rs index 2bb9f48f9b7..a96b8efd481 100644 --- a/compiler/rustc_mir_transform/src/coverage/mod.rs +++ b/compiler/rustc_mir_transform/src/coverage/mod.rs @@ -515,7 +515,7 @@ fn make_code_region( // Extend an empty span by one character so the region will be counted. let CharPos(char_pos) = start_col; if span.hi() == body_span.hi() { - start_col = CharPos(char_pos - 1); + start_col = CharPos(char_pos.saturating_sub(1)); } else { end_col = CharPos(char_pos + 1); } |