src/dsymbol.d

@@ -842,15 +842,15 @@ public:
      */
     final static bool oneMembers(Dsymbols* members, Dsymbol* ps, Identifier ident)
     {
-        //printf("Dsymbol::oneMembers() %d\n", members ? members->dim : 0);
+        //printf("Dsymbol::oneMembers() %d\n", members ? members.dim : 0);
         Dsymbol s = null;
         if (members)
         {
             for (size_t i = 0; i < members.dim; i++)
             {
                 Dsymbol sx = (*members)[i];
                 bool x = sx.oneMember(ps, ident);
-                //printf("\t[%d] kind %s = %d, s = %p\n", i, sx->kind(), x, *ps);
+                //printf("\t[%d] kind %s = %d, s = %p\n", i, sx.kind(), x, *ps);
                 if (!x)
                 {
                     //printf("\tfalse 1\n");
@@ -859,12 +859,19 @@ public:
                 }
                 if (*ps)
                 {
+                    static bool isOverloadableAlias(Dsymbol s)
+                    {
+                        auto ad = s.isAliasDeclaration();
+                        return ad && ad.aliassym && ad.aliassym.isOverloadable();
+                    }
+
                     assert(ident);
                     if (!(*ps).ident || !(*ps).ident.equals(ident))
                         continue;
                     if (!s)
                         s = *ps;
-                    else if (s.isOverloadable() && (*ps).isOverloadable())
+                    else if ((   s .isOverloadable() || isOverloadableAlias(  s)) &&
+                             ((*ps).isOverloadable() || isOverloadableAlias(*ps)))
                     {
                         // keep head of overload set
                         FuncDeclaration f1 = s.isFuncDeclaration();
@@ -892,7 +899,7 @@ public:
                 }
             }
         }
-        *ps = s; // s is the one symbol, NULL if none
+        *ps = s; // s is the one symbol, null if none
         //printf("\ttrue\n");
         return true;
     }

src/dtemplate.d

@@ -5742,9 +5742,7 @@ public:
             Dsymbol s;
             if (Dsymbol.oneMembers(members, &s, tempdecl.ident) && s)
             {
-                //printf("s->kind = '%s'\n", s->kind());
-                //s->print();
-                //printf("'%s', '%s'\n", s->ident->toChars(), tempdecl->ident->toChars());
+                //printf("tempdecl.ident = %s, s = '%s'\n", tempdecl.ident.toChars(), s.kind(), s.toPrettyChars());
                 //printf("setting aliasdecl\n");
                 aliasdecl = s;
             }
@@ -5787,9 +5785,7 @@ public:
             {
                 if (!aliasdecl || aliasdecl != s)
                 {
-                    //printf("s->kind = '%s'\n", s->kind());
-                    //s->print();
-                    //printf("'%s', '%s'\n", s->ident->toChars(), tempdecl->ident->toChars());
+                    //printf("tempdecl.ident = %s, s = '%s'\n", tempdecl.ident.toChars(), s.kind(), s.toPrettyChars());
                     //printf("setting aliasdecl 2\n");
                     aliasdecl = s;
                 }

test/runnable/template9.d

@@ -4691,6 +4691,26 @@ void test14886()
     static assert(is(typeof(bar2(R.init, x)) == int));
 }
 
+/******************************************/
+// 15156
+
+// 15156
+auto f15116a(T)(string s, string arg2) { return 1; }
+auto f15116b(T)(int    i, string arg2) { return 2; }
+
+template bish15116(T)
+{
+    alias bish15116 = f15116a!T;
+    alias bish15116 = f15116b!T;
+}
+
+void test15116()
+{
+    alias func = bish15116!string;
+    assert(func("", "") == 1);
+    assert(func(12, "") == 2);
+}
+
 /******************************************/
 
 int main()
@@ -4804,6 +4824,7 @@ int main()
     test14836();
     test14735();
     test14802();
+    test15116();
 
     printf("Success\n");
     return 0;