fixes #1774

compiler/nim.nimrod.cfg

@@ -1,7 +1,5 @@
 # Special configuration file for the Nim project
 
-# gc:markAndSweep
-
 hint[XDeclaredButNotUsed]:off
 path:"llvm"
 path:"$projectPath/.."

compiler/semexprs.nim

@@ -985,7 +985,7 @@ proc builtinFieldAccess(c: PContext, n: PNode, flags: TExprFlags): PNode =
     of tyTypeParamsHolders:
       return readTypeParameter(c, ty, i, n.info)
     of tyObject, tyTuple:
-      if ty.n.kind == nkRecList:
+      if ty.n != nil and ty.n.kind == nkRecList:
         for field in ty.n:
           if field.sym.name == i:
             n.typ = newTypeWithSons(c, tyFieldAccessor, @[ty, field.sym.typ])

compiler/semstmts.nim

@@ -654,6 +654,7 @@ proc checkForMetaFields(n: PNode) =
     if t != nil and t.isMetaType and tfGenericTypeParam notin t.flags:
       localError(n.info, errTIsNotAConcreteType, t.typeToString)
 
+  if n.isNil: return
   case n.kind
   of nkRecList, nkRecCase:
     for s in n: checkForMetaFields(s)

compiler/suggest.nim

@@ -74,9 +74,6 @@ proc suggestField(c: PContext, s: PSym, outputs: var int) =
     suggestWriteln(symToStr(s, isLocal=true, sectionSuggest))
     inc outputs
 
-when not defined(nimhygiene):
-  {.pragma: inject.}
-
 template wholeSymTab(cond, section: expr) {.immediate.} =
   var isLocal = true
   for scope in walkScopes(c.currentScope):

tests/typerel/typedescs.nim

@@ -0,0 +1,7 @@
+# bug #1774
+proc p(T: typedesc) = discard
+
+p(type((5, 6)))       # Compiles
+(type((5, 6))).p      # Doesn't compile (SIGSEGV: Illegal storage access.)
+type T = type((5, 6)) # Doesn't compile (SIGSEGV: Illegal storage access.)
+