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authorbors <bors@rust-lang.org>2018-07-20 22:52:11 +0000
committerbors <bors@rust-lang.org>2018-07-20 22:52:11 +0000
commitee8d23d54445f8d3e62a5e2bd6fde9ac3ff2cf24 (patch)
tree5b1993b8da7f303046ad60ce690ca657cb34bced /src/libsyntax
parent878dd0b5e19e086e608351f33bf12e3625425f20 (diff)
parent7bf3578a39e71d61a22beaa121ebd25de2b25738 (diff)
downloadrust-ee8d23d54445f8d3e62a5e2bd6fde9ac3ff2cf24.tar.gz
rust-ee8d23d54445f8d3e62a5e2bd6fde9ac3ff2cf24.zip
Auto merge of #52574 - kennytm:rollup, r=kennytm
Rollup of 7 pull requests

Successful merges:

 - #52502 (fix unsafety: don't call ptr_rotate for ZST)
 - #52505 (rustc: Remove a workaround in ThinLTO fixed upstream)
 - #52526 (Enable run-pass/sepcomp-lib-lto.rs on Android)
 - #52527 (Remove duplicate E0396 tests)
 - #52539 (rustc: Fix two custom attributes with custom derive)
 - #52540 (Fix docker/run.sh script when run locally)
 - #52573 (Cleanups)

Failed merges:

r? @ghost
Diffstat (limited to 'src/libsyntax')
-rw-r--r--src/libsyntax/ext/expand.rs17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/libsyntax/ext/expand.rs b/src/libsyntax/ext/expand.rs
index 1241e230b26..d64f3de8daa 100644
--- a/src/libsyntax/ext/expand.rs
+++ b/src/libsyntax/ext/expand.rs
@@ -240,6 +240,13 @@ impl Invocation {
             InvocationKind::Derive { ref path, .. } => path.span,
         }
     }
+
+    pub fn attr_id(&self) -> Option<ast::AttrId> {
+        match self.kind {
+            InvocationKind::Attr { attr: Some(ref attr), .. } => Some(attr.id),
+            _ => None,
+        }
+    }
 }
 
 pub struct MacroExpander<'a, 'b:'a> {
@@ -331,10 +338,20 @@ impl<'a, 'b> MacroExpander<'a, 'b> {
 
             let scope =
                 if self.monotonic { invoc.expansion_data.mark } else { orig_expansion_data.mark };
+            let attr_id_before = invoc.attr_id();
             let ext = match self.cx.resolver.resolve_invoc(&mut invoc, scope, force) {
                 Ok(ext) => Some(ext),
                 Err(Determinacy::Determined) => None,
                 Err(Determinacy::Undetermined) => {
+                    // Sometimes attributes which we thought were invocations
+                    // end up being custom attributes for custom derives. If
+                    // that's the case our `invoc` will have changed out from
+                    // under us. If this is the case we're making progress so we
+                    // want to flag it as such, and we test this by looking if
+                    // the `attr_id()` method has been changing over time.
+                    if invoc.attr_id() != attr_id_before {
+                        progress = true;
+                    }
                     undetermined_invocations.push(invoc);
                     continue
                 }