diff --git a/gcc/testsuite/gcc.dg/c23-tag-alias-2.c b/gcc/testsuite/gcc.dg/c23-tag-alias-2.c
index 64ff67d85521c48168b11e2d3612f72e4ec40602..1a4097b629da7c12a01e9d8edb0669a7d111e376 100644
--- a/gcc/testsuite/gcc.dg/c23-tag-alias-2.c
+++ b/gcc/testsuite/gcc.dg/c23-tag-alias-2.c
@@ -1,4 +1,4 @@
-/* { dg-do run }
+/* { dg-do run { target lto } }
  * { dg-options "-std=c23 -flto -O2" }
  */
 
diff --git a/gcc/testsuite/gcc.dg/c23-tag-alias-3.c b/gcc/testsuite/gcc.dg/c23-tag-alias-3.c
index b9fe6f3b40778568fe248e57f3811a47e8d49d2d..76bc4dfcd23aa72507f8b6c4fce317b11bcef510 100644
--- a/gcc/testsuite/gcc.dg/c23-tag-alias-3.c
+++ b/gcc/testsuite/gcc.dg/c23-tag-alias-3.c
@@ -1,4 +1,4 @@
-/* { dg-do run }
+/* { dg-do run { target lto } }
  * { dg-options "-std=c23 -O2" }
  */
 
diff --git a/gcc/testsuite/gcc.dg/gnu23-tag-alias-3.c b/gcc/testsuite/gcc.dg/gnu23-tag-alias-3.c
index c2fd4e930efe548a3650caf57884ac7184ff281e..9d7e7e11c7fd08a7dc791352a261d765ea5107d2 100644
--- a/gcc/testsuite/gcc.dg/gnu23-tag-alias-3.c
+++ b/gcc/testsuite/gcc.dg/gnu23-tag-alias-3.c
@@ -1,4 +1,4 @@
-/* { dg-do run }
+/* { dg-do run { target lto } }
  * { dg-options "-std=gnu23 -flto -O2" }
  */
 
diff --git a/gcc/testsuite/gcc.dg/scantest-lto.c b/gcc/testsuite/gcc.dg/scantest-lto.c
index 5f8abaf77f3df4171bc6ae170f1527f2f9b19983..46c21f20bfc9c521a3641efe0739db1b63183490 100644
--- a/gcc/testsuite/gcc.dg/scantest-lto.c
+++ b/gcc/testsuite/gcc.dg/scantest-lto.c
@@ -1,3 +1,4 @@
+/* { dg-do compile { target lto } }
 /* { dg-options "-O2 -flto" } */
 
 void foo ()