1 files changed, 78 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr16194.c b/gcc/testsuite/gcc.dg/pr16194.c
new file mode 100644
index 000000000..8b4492240
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr16194.c
@@ -0,0 +1,78 @@
+/* { dg-do compile } */
+/* { dg-options "-O" } */
+/* { dg-bogus "internal compiler error" "ICE" { target *-*-* } 0 } */
+
+#undef SKIP
+#define ASMDECL __asm (REG);
+#define CLOBBER_LIST : REG
+#define INP_CLOBBER_LIST : CLOBBER_LIST
+#if defined (__alpha__)
+# define REG "$1"
+#elif defined (__CRIS__) || defined (__sh__)
+# define REG "r10"
+#elif defined (__hppa__)
+# define REG "%r10"
+#elif defined (__i386__)
+# define REG "%eax"
+#elif defined (__MMIX__)
+# define REG "$8"
+#elif defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) \
+        || defined (__POWERPC__) || defined (PPC) || defined (_IBMR2)
+# define REG "6"
+#elif defined (__x86_64__)
+# define REG "rax"
+#elif defined (__m68k__)
+# define REG "%d0"
+#else
+/* Make this test harmless for any target not recognized above.  */
+# define SKIP 1
+#endif
+
+#ifndef SKIP
+
+struct A
+{
+  int a;
+};
+
+struct B
+{
+  struct A b[3];
+};
+
+struct C
+{
+  struct B c;
+};
+
+void bug (void)
+{
+  register char* dst ASMDECL;
+  __asm__ ("":"=g"(*dst): : REG);
+}
+
+/* The tree optimizers currently prevent us from finding an overlap -
+   we end up using a copy of dst rather than dst.
+   But at least make sure we don't get an ICE.  */
+void bug2 (void)
+{
+  register char* dst ASMDECL;
+  __asm__ ("": :"g"(*dst) CLOBBER_LIST);
+}
+
+void
+foo (void)
+{
+  register struct C *dst ASMDECL;
+  __asm__ ("" : "=g"(dst->c.b[1].a) INP_CLOBBER_LIST);
+}
+
+#else
+
+int main ()
+{
+  return 0;
+}
+
+#endif
+