diff --git a/clang/test/CodeGen/PowerPC/ppc64-align-struct.c b/clang/test/CodeGen/PowerPC/ppc64-align-struct.c
--- a/clang/test/CodeGen/PowerPC/ppc64-align-struct.c
+++ b/clang/test/CodeGen/PowerPC/ppc64-align-struct.c
@@ -9,6 +9,7 @@
 struct test5 { int x[17]; };
 struct test6 { int x[17]; } __attribute__((aligned (16)));
 struct test7 { int x[17]; } __attribute__((aligned (32)));
+struct test8 { char x; };
 
 // CHECK: define{{.*}} void @test1(i32 noundef signext %x, i64 %y.coerce)
 void test1 (int x, struct test1 y)
@@ -116,6 +117,22 @@
   return y;
 }
 
+// Error pattern will be fixed in https://reviews.llvm.org/D133338
+// CHECK: define{{.*}} void @test8va(ptr noalias sret(%struct.test8) align 1 %[[AGG_RESULT:.*]], i32 noundef signext %x, ...)
+// CHECK: %[[CUR:[^ ]+]] = load ptr, ptr %ap
+// CHECK: %[[NEXT:[^ ]+]] = getelementptr inbounds i8, ptr %[[CUR]], i64 8
+// CHECK: store ptr %[[NEXT]], ptr %ap
+// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %[[AGG_RESULT]], ptr align 8 %[[CUR]], i64 1, i1 false)
+struct test8 test8va (int x, ...)
+{
+  struct test8 y;
+  va_list ap;
+  va_start(ap, x);
+  y = va_arg (ap, struct test8);
+  va_end(ap);
+  return y;
+}
+
 // CHECK: define{{.*}} void @testva_longdouble(ptr noalias sret(%struct.test_longdouble) align 16 %[[AGG_RESULT:.*]], i32 noundef signext %x, ...)
 // CHECK: %[[CUR:[^ ]+]] = load ptr, ptr %ap
 // CHECK: %[[NEXT:[^ ]+]] = getelementptr inbounds i8, ptr %[[CUR]], i64 16