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/* Contributed by Dodji Seketeli <>
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.
/* Explicitly use dwarf-2 because dwarf-5 might use DW_FORM_implicit_const
which is hard to scan for. */
/* { dg-options "-O -g3 -gdwarf-2 -dA -fgnu89-inline" } */
/* { 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 \\(\[^\n\]*\\) DW_TAG_inlined_subroutine" 6 } } */
/* We should have no DW_TAG_lexical_block DIEs, all inline instances
should have the first subblock elided to match the abstract instance
layout. */
/* { dg-final { scan-assembler-times "\\(DIE \\(\[^\n\]*\\) DW_TAG_lexical_block" 0 } } */
/* 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);
main ()
int some_int = 1;
first (some_int);
return 0;