diff options
Diffstat (limited to 'compiler/rustc_interface/src/interface.rs')
| -rw-r--r-- | compiler/rustc_interface/src/interface.rs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/compiler/rustc_interface/src/interface.rs b/compiler/rustc_interface/src/interface.rs index 0861bd290df..81585f8f4e4 100644 --- a/compiler/rustc_interface/src/interface.rs +++ b/compiler/rustc_interface/src/interface.rs @@ -75,7 +75,10 @@ pub fn parse_cfgspecs(cfgspecs: Vec<String>) -> FxHashSet<(String, Option<String let cfg = cfgspecs .into_iter() .map(|s| { - let sess = ParseSess::with_silent_emitter(); + let sess = ParseSess::with_silent_emitter(Some(format!( + "this error occurred on the command line: `--cfg={}`", + s + ))); let filename = FileName::cfg_spec_source_code(&s); let mut parser = new_parser_from_source_str(&sess, filename, s.to_string()); |