diff options
| -rw-r--r-- | src/librustc/driver/session.rs | 2 | ||||
| -rw-r--r-- | src/librustc/front/show_span.rs | 5 |
2 files changed, 6 insertions, 1 deletions
diff --git a/src/librustc/driver/session.rs b/src/librustc/driver/session.rs index 4e386fa343d..6fb7e749475 100644 --- a/src/librustc/driver/session.rs +++ b/src/librustc/driver/session.rs @@ -96,7 +96,7 @@ pub fn debugging_opts_map() -> ~[(&'static str, &'static str, u64)] { ("no-landing-pads", "omit landing pads for unwinding", NO_LANDING_PADS), ("debug-llvm", "enable debug output from LLVM", DEBUG_LLVM), - ("show-span", "show spans", SHOW_SPAN), + ("show-span", "show spans for compiler debugging", SHOW_SPAN), ("count-type-sizes", "count the sizes of aggregate types", COUNT_TYPE_SIZES), ("meta-stats", "gather metadata statistics", META_STATS), diff --git a/src/librustc/front/show_span.rs b/src/librustc/front/show_span.rs index a5bc8e0243b..2c076aac095 100644 --- a/src/librustc/front/show_span.rs +++ b/src/librustc/front/show_span.rs @@ -8,6 +8,11 @@ // option. This file may not be copied, modified, or distributed // except according to those terms. +//! Span debugger +//! +//! This module shows spans for all expressions in the crate +//! to help with compiler debugging. + use syntax::ast; use syntax::visit; use syntax::visit::Visitor; |