Commit 1500b9ddc3

@@ -6048,6 +6048,7 @@ fn analyzeCall(
         const parent_inst_map = sema.inst_map;
         sema.inst_map = .{};
         defer {
+            sema.src = call_src;
             sema.inst_map.deinit(gpa);
             sema.inst_map = parent_inst_map;
         }

@@ -0,0 +1,26 @@
+inline fn bit_count(value: i32) i32 {
+    var i = value;
+    // Algo from : http://aggregate.ee.engr.uky.edu/MAGIC/#Population%20Count%20(ones%20Count)
+    i -= ((i >> 1) & 0x55555555);
+    i = (i & 0x33333333) + ((i >> 2) & 0x33333333);
+    i = (((i >> 4) + i) & 0x0F0F0F0F);
+    i += (i >> 8);
+    i += (i >> 16);
+    return (i & 0x0000003F);
+}
+
+inline fn number_of_trailing_zeros(i: i32) u32 {
+    return @as(u32, bit_count((i & -i) - 1));
+}
+
+export fn entry() void {
+    _ = number_of_trailing_zeros(0);
+}
+
+// error
+// backend=stage2
+// target=native
+//
+// :13:30: error: expected type 'u32', found 'i32'
+// :13:30: note: unsigned 32-bit int cannot represent all possible signed 32-bit values
+// :17:33: note: called from here