Merge pull request #1 from nim-lang/devel

Getting the latest from nim-lang

1 files changed, 12 insertions, 1 deletions

diff --git a/compiler/semcall.nim b/compiler/semcall.nim
index 7e0ea5490..3723d3fc1 100644
--- a/compiler/semcall.nim
+++ b/compiler/semcall.nim
@@ -287,7 +287,18 @@ proc getMsgDiagnostic(c: PContext, flags: TExprFlags, n, f: PNode): string =
 
   let ident = considerQuotedIdent(c, f, n).s
   if nfDotField in n.flags and nfExplicitCall notin n.flags:
-    result = errUndeclaredField % ident & result
+    let sym = n.sons[1].typ.sym
+    var typeHint = ""
+    if sym == nil:
+      # Perhaps we're in a `compiles(foo.bar)` expression, or
+      # in a concept, eg:
+      #   ExplainedConcept {.explain.} = concept x
+      #     x.foo is int
+      # We coudl use: `(c.config $ n.sons[1].info)` to get more context.
+      discard
+    else:
+      typeHint = " for type " & getProcHeader(c.config, sym)
+    result = errUndeclaredField % ident & typeHint & " " & result
   else:
     if result.len == 0: result = errUndeclaredRoutine % ident
     else: result = errBadRoutine % [ident, result]