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/* Contributed by Dodji Seketeli <dodji@redhat.com>
   Origin: PR debug/37801
 
  Abstract instances (DW_TAG_subroutines having the DW_AT_inline attribute)
  of second and first were having a DW_TAG_lexical_block DIE wrongly
  representing the inlined calls to third (in second) and to
  second (in first). At the same time, main didn't have children
  DW_TAG_inlined_subroutine DIEs representing the inlined calls to
  first, second and third.
 
  The ideal goal here is to test that we have no superfluous
  DW_TAG_lexical_block DIE anymore, that abstract instances DIEs have
  no descendant DIE with a DW_AT_abstract_origin attribute, and that main has
  properly nested DW_TAG_inlined_subroutine DIEs for third, second and first.
*/
 
/* { dg-options "-O -g3 -gdwarf-2 -dA" } */
/* { dg-do compile } */
 
/* There are 6 inlined subroutines:
   - One for each subroutine inlined into main, that's 3.
   - One for earch subroutine inline into the out of line instances
     of third, second and first.  */
/* { dg-final { scan-assembler-times "\\(DIE \\(.*?\\) DW_TAG_inlined_subroutine" 6 } } */
 
/* Likewise we should have 6 DW_TAG_lexical_block DIEs:
   - One for each subroutine inlined into main, so that's 3.
   - One for each subroutine inlined in the out of line instances
     of third, second and first, that's 3.
*/
/* { dg-final { scan-assembler-times "\\(DIE \\(.*?\\) DW_TAG_lexical_block" 6 } } */
 
 
/* There are 3 DW_AT_inline attributes: one per abstract inline instance.
   The value of the attribute must be 0x3, meaning the function was
   actually inlined.  */
/* { dg-final { scan-assembler-times  "(?:byte|data1)\[^\n\]*0x3\[^\n\]* DW_AT_inline" 3 } } */
 
volatile int *a;
 
inline void
third (int arg3)
{
  int var3 = arg3;
  a[0] = var3;
}
 
inline void
second (int arg2)
{
  int var2 = arg2;
  third (var2+1);
}
 
inline void
first (int arg1)
{
  int var1 = arg1;
  second (var1+1);
}
 
int
main ()
{
  int some_int = 1;
  first (some_int);
  return 0;
}