about summary refs log tree commit diff
path: root/compiler/rustc_interface/src/interface.rs
diff options
context:
space:
mode:
authorUrgau <urgau@numericable.fr>2024-01-13 12:18:51 +0100
committerUrgau <urgau@numericable.fr>2024-01-13 17:19:46 +0100
commit41b69aae912aa9a1a8d5ed9518e73d136b42e7ca (patch)
treec0d6cc9db279305d70497c8c45e95a553a857910 /compiler/rustc_interface/src/interface.rs
parent284cb714d2bf54b1af41dbc18469b478bc6f6489 (diff)
downloadrust-41b69aae912aa9a1a8d5ed9518e73d136b42e7ca.tar.gz
rust-41b69aae912aa9a1a8d5ed9518e73d136b42e7ca.zip
Add way to express no-values with check-cfg
Diffstat (limited to 'compiler/rustc_interface/src/interface.rs')
-rw-r--r--compiler/rustc_interface/src/interface.rs4
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/rustc_interface/src/interface.rs b/compiler/rustc_interface/src/interface.rs
index 32fba6ade88..5ca88090996 100644
--- a/compiler/rustc_interface/src/interface.rs
+++ b/compiler/rustc_interface/src/interface.rs
@@ -218,7 +218,9 @@ pub(crate) fn parse_check_cfg(dcx: &DiagCtxt, specs: Vec<String>) -> CheckCfg {
             }
         }
 
-        if values.is_empty() && !values_any_specified && !any_specified {
+        if !values_specified && !any_specified {
+            // `cfg(name)` is equivalent to `cfg(name, values(none()))` so add
+            // an implicit `none()`
             values.insert(None);
         } else if !values.is_empty() && values_any_specified {
             error!(