diff --git a/src/Sema.zig b/src/Sema.zig
index abd66f22fe..e397a6659a 100644
--- a/src/Sema.zig
+++ b/src/Sema.zig
@@ -26193,6 +26193,8 @@ fn zirMemcpy(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!void
     }
 
     try sema.requireRuntimeBlock(block, src, runtime_src);
+    try sema.validateRuntimeValue(block, dest_src, dest_ptr);
+    try sema.validateRuntimeValue(block, src_src, src_ptr);
 
     // Aliasing safety check.
     if (block.wantSafety()) {
@@ -26321,6 +26323,9 @@ fn zirMemset(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!void
     };
 
     try sema.requireRuntimeBlock(block, src, runtime_src);
+    try sema.validateRuntimeValue(block, dest_src, dest_ptr);
+    try sema.validateRuntimeValue(block, value_src, elem);
+
     _ = try block.addInst(.{
         .tag = if (block.wantSafety()) .memset_safe else .memset,
         .data = .{ .bin_op = .{
diff --git a/test/cases/compile_errors/comptime_var_referenced_at_runtime.zig b/test/cases/compile_errors/comptime_var_referenced_at_runtime.zig
index 30c3b2b850..2a5868f6b1 100644
--- a/test/cases/compile_errors/comptime_var_referenced_at_runtime.zig
+++ b/test/cases/compile_errors/comptime_var_referenced_at_runtime.zig
@@ -47,6 +47,22 @@ export fn qar() void {
     _ = y;
 }
 
+export fn bux() void {
+    comptime var x: [2]u32 = undefined;
+    x = .{ 1, 2 };
+
+    var rt: [2]u32 = undefined;
+    @memcpy(&rt, &x);
+}
+
+export fn far() void {
+    comptime var x: u32 = 123;
+
+    var rt: [2]*u32 = undefined;
+    const elem: *u32 = &x;
+    @memset(&rt, elem);
+}
+
 // error
 //
 // :5:19: error: runtime value contains reference to comptime var
@@ -63,3 +79,7 @@ export fn qar() void {
 // :41:12: note: comptime var pointers are not available at runtime
 // :46:39: error: runtime value contains reference to comptime var
 // :46:39: note: comptime var pointers are not available at runtime
+// :55:18: error: runtime value contains reference to comptime var
+// :55:18: note: comptime var pointers are not available at runtime
+// :63:18: error: runtime value contains reference to comptime var
+// :63:18: note: comptime var pointers are not available at runtime