c++: Stat-hack for members [PR 98530]

[Nathan Sidwell]

This was a header file that deployed the stat-hack inside a class
(both a member-class and a [non-static data] member had the same
name).  Due to the way that's represented in name lookup we missed the
class.  Sadly just changing the representation globally has
detrimental effects elsewhere, and this is a rare case, so just
creating a new overload on the fly shouldn't be a problem.

        PR c++/98530
        gcc/cp/
        * name-lookup.c (lookup_class_binding): Rearrange a stat-hack.
        gcc/testsuite/
        * g++.dg/modules/stat-mem-1.h: New.
        * g++.dg/modules/stat-mem-1_a.H: New.
        * g++.dg/modules/stat-mem-1_b.C: New.
--
Nathan Sidwell

diff --git c/gcc/cp/name-lookup.c w/gcc/cp/name-lookup.c
index b4b6c0b81b5..c99f2e3622d 100644
--- c/gcc/cp/name-lookup.c
+++ w/gcc/cp/name-lookup.c
@@ -3926,11 +3926,16 @@ lookup_class_binding (tree klass, tree name)
       vec<tree, va_gc> *member_vec = CLASSTYPE_MEMBER_VEC (klass);
 
       found = member_vec_binary_search (member_vec, name);
-      if (IDENTIFIER_CONV_OP_P (name))
+      if (!found)
+	;
+      else if (STAT_HACK_P (found))
+	/* Rearrange the stat hack so that we don't need to expose that
+	   internal detail.  */
+	found = ovl_make (STAT_TYPE (found), STAT_DECL (found));
+      else if (IDENTIFIER_CONV_OP_P (name))
 	{
 	  gcc_checking_assert (name == conv_op_identifier);
-	  if (found)
-	    found = OVL_CHAIN (found);
+	  found = OVL_CHAIN (found);
 	}
     }
   else
diff --git c/gcc/testsuite/g++.dg/modules/stat-mem-1.h w/gcc/testsuite/g++.dg/modules/stat-mem-1.h
new file mode 100644
index 00000000000..b5703ea2262
--- /dev/null
+++ w/gcc/testsuite/g++.dg/modules/stat-mem-1.h
@@ -0,0 +1,6 @@
+
+struct fpu {
+  struct NAME {
+    int state;
+  } NAME;
+};
diff --git c/gcc/testsuite/g++.dg/modules/stat-mem-1_a.H w/gcc/testsuite/g++.dg/modules/stat-mem-1_a.H
new file mode 100644
index 00000000000..6daa137be4f
--- /dev/null
+++ w/gcc/testsuite/g++.dg/modules/stat-mem-1_a.H
@@ -0,0 +1,5 @@
+// { dg-additional-options -fmodule-header }
+// PR c++ 98530  stat-hack inside a structure
+// { dg-module-cmi {} }
+
+#include "stat-mem-1.h"
diff --git c/gcc/testsuite/g++.dg/modules/stat-mem-1_b.C w/gcc/testsuite/g++.dg/modules/stat-mem-1_b.C
new file mode 100644
index 00000000000..9b83d4e6e30
--- /dev/null
+++ w/gcc/testsuite/g++.dg/modules/stat-mem-1_b.C
@@ -0,0 +1,4 @@
+// { dg-additional-options "-fmodules-ts -fno-module-lazy" }
+
+#include "stat-mem-1.h"
+import "stat-mem-1_a.H";