diff --git a/src/dmd/dsymbolsem.d b/src/dmd/dsymbolsem.d
index 2acb48a88f3f..ed2b7b321276 100644
--- a/src/dmd/dsymbolsem.d
+++ b/src/dmd/dsymbolsem.d
@@ -4291,6 +4291,18 @@ private extern(C++) final class DsymbolSemanticVisitor : Visitor
             }
         }
 
+        if (sd.type.ty == Tstruct && (cast(TypeStruct)sd.type).sym != sd)
+        {
+            // https://issues.dlang.org/show_bug.cgi?id=19024
+            StructDeclaration sym = (cast(TypeStruct)sd.type).sym;
+            version (none)
+            {
+                printf("this = %p %s\n", sd, sd.toChars());
+                printf("type = %d sym = %p, %s\n", sd.type.ty, sym, sym.toPrettyChars());
+            }
+            sd.error("already exists at %s. Perhaps in another function with the same name?", sym.loc.toChars());
+        }
+
         if (global.errors != errors)
         {
             // The type is no good.
@@ -4305,16 +4317,6 @@ private extern(C++) final class DsymbolSemanticVisitor : Visitor
             sd.deferred.semantic2(sc);
             sd.deferred.semantic3(sc);
         }
-
-        version (none)
-        {
-            if (sd.type.ty == Tstruct && (cast(TypeStruct)sd.type).sym != sd)
-            {
-                printf("this = %p %s\n", sd, sd.toChars());
-                printf("type = %d sym = %p\n", sd.type.ty, (cast(TypeStruct)sd.type).sym);
-            }
-        }
-        assert(sd.type.ty != Tstruct || (cast(TypeStruct)sd.type).sym == sd);
     }
 
     final void interfaceSemantic(ClassDeclaration cd)
diff --git a/test/compilable/ice14739.d b/test/compilable/ice14739.d
new file mode 100644
index 000000000000..cc90da6342e8
--- /dev/null
+++ b/test/compilable/ice14739.d
@@ -0,0 +1,19 @@
+// REQUIRED_ARGS: -o-
+
+void main(string[] args)
+{
+    immutable int a;
+    immutable int b;
+    S!a sa;
+    S!b sb;
+    C!a ca;
+    C!b cb;
+}
+
+struct S(alias a)
+{
+}
+
+class C(alias a)
+{
+}
diff --git a/test/fail_compilation/fail17492.d b/test/fail_compilation/fail17492.d
index ac59f49eb7b3..dca6f6fc0888 100644
--- a/test/fail_compilation/fail17492.d
+++ b/test/fail_compilation/fail17492.d
@@ -4,7 +4,8 @@ Disabled for 2.079, s.t. a deprecation cycle can be started with 2.080
 DISABLED: win32 win64 osx linux freebsd dragonflybsd
 TEST_OUTPUT:
 ---
-fail_compilation/fail17492.d(17): Error: function `fail17492.C.testE()` conflicts with previous declaration at fail_compilation/fail17492.d(10)
+fail_compilation/fail17492.d(20): Error: class `fail17492.C.testE.I` already exists at fail17492.d(13). Perhaps in another function with the same name?
+fail_compilation/fail17492.d(37): Error: struct `fail17492.S.testE.I` already exists at fail17492.d(30). Perhaps in another function with the same name?
 ---
 https://issues.dlang.org/show_bug.cgi?id=17492
 */
@@ -25,3 +26,20 @@ class C
         }
     }
 }
+
+class S
+{
+    void testE()
+    {
+        struct I
+        {
+        }
+    }
+
+    void testE()
+    {
+        struct I
+        {
+        }
+    }
+}