Merge pull request #1744 from 9rnsr/fix11603

Issue 11603 - std.algorithm.canFind does not work when needle is 1-byte zero

std/algorithm.d

@@ -3916,7 +3916,7 @@ if (isInputRange!InputRange &&
             {
                 EType* ptr = null;
                 //Note: we use "min/max" to handle sign mismatch.
-                if (min(EType.min, needle) == EType.min, needle && max(EType.max, needle) == EType.max)
+                if (min(EType.min, needle) == EType.min && max(EType.max, needle) == EType.max)
                     ptr = cast(EType*) memchr(haystack.ptr, needle, haystack.length);
 
                 return ptr ?
@@ -4042,6 +4042,15 @@ unittest
     dg();
     assertCTFEable!dg;
 }
+unittest
+{
+    // Bugzilla 11603
+    enum Foo : ubyte { A }
+    assert([Foo.A].find(Foo.A).empty == false);
+
+    ubyte x = 0;
+    assert([x].find(x).empty == false);
+}
 
 /**
 Finds a forward range in another. Elements are compared for