re PR debug/54694 (internal compiler error: in dwarf2out_frame_debug_expr, at dwarf2out.c:2387)

	PR debug/54694
	* gcc.target/i386/pr9771-1.c (main): Rename to...
	(real_main): ... this.  Add __asm name "main".
	(ASMNAME, ASMNAME2, STRING): Define.

From-SVN: r206679

gcc/testsuite/ChangeLog

+2014-01-16  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/54694
+	* gcc.target/i386/pr9771-1.c (main): Rename to...
+	(real_main): ... this.  Add __asm name "main".
+	(ASMNAME, ASMNAME2, STRING): Define.
+
 2014-01-16  Nick Clifton  <nickc@redhat.com>
 
 	PR middle-end/28865

gcc/testsuite/gcc.target/i386/pr9771-1.c

@@ -45,7 +45,17 @@ void test(void)
   exit(0);
 }
 
-int main()
+/* main usually performs dynamic realignment of the stack in case
+   _start would fail to properly align the stack, but for dynamic
+   stack realignment we need frame pointer which is incompatible
+   with -ffixed-ebp and the global register var.  So, cheat here
+   and hide from the compiler that main is really main.  */
+#define ASMNAME(cname)  ASMNAME2 (__USER_LABEL_PREFIX__, cname)
+#define ASMNAME2(prefix, cname) STRING (prefix) cname
+#define STRING(x)    #x
+int real_main() __asm (ASMNAME ("main"));
+
+int real_main()
 {
   test();
   return 0;