re PR target/9506 (ABI breakage: structure return)

	PR c/9506
	* i386.c (override_options): Use DEFAULT_PCC_STRUCT_RETURN.
	* gcc.dg/struct-ret-libc.c: New test.

From-SVN: r62204

gcc/ChangeLog

+2003-01-31  Jan Hubicka  <jh@suse.cz>
+
+	PR c/9506
+	* i386.c (override_options): Use DEFAULT_PCC_STRUCT_RETURN.
+
+2003-01-31  Loren J. Rittle <ljrittle@acm.org>
+
+	* gcc.dg/struct-ret-libc.c: New test.
+
 2003-01-31  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
 	* pa32-regs.h (REGNO_REG_CLASS, REG_CLASS_FROM_LETTER): Delete

gcc/config/i386/i386.c

@@ -1118,7 +1118,7 @@ override_options ()
       if (flag_asynchronous_unwind_tables == 2)
 	flag_asynchronous_unwind_tables = 0;
       if (flag_pcc_struct_return == 2)
-	flag_pcc_struct_return = 1;
+	flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN;
     }
 
 #ifdef SUBTARGET_OVERRIDE_OPTIONS

gcc/testsuite/gcc.dg/struct-ret-libc.c

+/* Test evolved from source from Simona Perri <perri@mat.unical.it>
+   and Gerald Pfeifer<pfeifer@dbai.tuwien.ac.at>.
+
+   Copyright (C) 2003 Free Software Foundation  */
+
+/* { dg-do run } */
+
+#include <stdlib.h>
+
+int main ()
+{
+  div_t d = div (20, 5);
+  if ((d.quot != 4) || (d.rem))
+    abort ();
+  exit (0);
+}