fix incorrectly trying to memset at comptime

closes #718

2 files changed, 18 insertions, 0 deletions

diff --git a/test/stage1/behavior.zig b/test/stage1/behavior.zig
index 8124e27501..07158ae784 100644
--- a/test/stage1/behavior.zig
+++ b/test/stage1/behavior.zig
@@ -25,6 +25,7 @@ comptime {
     _ = @import("behavior/bugs/655.zig");
     _ = @import("behavior/bugs/656.zig");
     _ = @import("behavior/bugs/704.zig");
+    _ = @import("behavior/bugs/718.zig");
     _ = @import("behavior/bugs/726.zig");
     _ = @import("behavior/bugs/828.zig");
     _ = @import("behavior/bugs/920.zig");
diff --git a/test/stage1/behavior/bugs/718.zig b/test/stage1/behavior/bugs/718.zig
new file mode 100644
index 0000000000..8dfb511bb4
--- /dev/null
+++ b/test/stage1/behavior/bugs/718.zig
@@ -0,0 +1,17 @@
+const std = @import("std");
+const mem = std.mem;
+const expect = std.testing.expect;
+const Keys = struct {
+    up: bool,
+    down: bool,
+    left: bool,
+    right: bool,
+};
+var keys: Keys = undefined;
+test "zero keys with @memset" {
+    @memset(@ptrCast([*]u8, &keys), 0, @sizeOf(@typeOf(keys)));
+    expect(!keys.up);
+    expect(!keys.down);
+    expect(!keys.left);
+    expect(!keys.right);
+}