Merge pull request #1406 from ziglang/macos-stack-traces

MacOS stack traces
closes #1365 

1 files changed, 6 insertions, 0 deletions

diff --git a/std/io.zig b/std/io.zig
index c7154065cb..369f6eede3 100644
--- a/std/io.zig
+++ b/std/io.zig
@@ -207,6 +207,12 @@ pub fn InStream(comptime ReadError: type) type {
                 _ = try self.readByte();
             }
         }
+
+        pub fn readStruct(self: *Self, comptime T: type, ptr: *T) !void {
+            // Only extern and packed structs have defined in-memory layout.
+            assert(@typeInfo(T).Struct.layout != builtin.TypeInfo.ContainerLayout.Auto);
+            return self.readNoEof(@sliceToBytes((*[1]T)(ptr)[0..]));
+        }
     };
 }