1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tls/opt-15.c b/gcc/testsuite/gcc.dg/tls/opt-15.c
new file mode 100644
index 000000000..a6cc7214a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tls/opt-15.c
@@ -0,0 +1,24 @@
+/* PR target/42564 */
+/* This used to ICE on the SPARC because of an unrecognized TLS pattern.  */
+
+/* { dg-do compile } */
+/* { dg-options "-O -fPIC" } */
+/* { dg-require-effective-target tls } */
+/* { dg-require-effective-target fpic } */
+
+extern void *memset(void *s, int c, __SIZE_TYPE__ n);
+
+struct S1 { int i; };
+
+struct S2
+{
+  int ver;
+  struct S1 s;
+};
+
+static __thread struct S2 m;
+
+void init(void)
+{
+  memset(&m.s, 0, sizeof(m.s));
+}