fix Issue 14396 - compile error std.conv.parse!int with input range (…

…dmd2.067)
dlang · Apr 12, 2015 · 99da04d · 99da04d
1 parent 75da107
commit 99da04d
Showing 1 changed file with 17 additions and 1 deletion.
diff --git a/std/conv.d b/std/conv.d
@@ -1989,7 +1989,7 @@ Target parse(Target, Source)(ref Source s)
             Target v = cast(Target)c;
             while (!s.empty)
             {
-                c = s.front - '0';
+                c = cast(typeof(c)) (s.front - '0');
                 if (c > 9)
                     break;
 
@@ -2206,6 +2206,22 @@ Lerr:
     assertThrown!ConvOverflowException("-92233720368547758080".to!long());
 }
 
+// Issue 14396
+@safe pure unittest
+{
+    struct StrInputRange
+    {
+        this (string s) { str = s; }
+        char front() const @property { return str[front_index]; }
+        char popFront() { return str[front_index++]; }
+        bool empty() const @property { return str.length <= front_index; }
+        string str;
+        size_t front_index = 0;
+    }
+    auto input = StrInputRange("777");
+    assert(parse!int(input) == 777);
+}
+
 /// ditto
 Target parse(Target, Source)(ref Source s, uint radix)
     if (isSomeChar!(ElementType!Source) &&