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From: "edlinger at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug testsuite/100467] [12 regression] g++.dg/debug/dwarf2/thunk1.C
Date: Fri, 07 May 2021 14:03:45 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100467

Bernd Edlinger <edlinger at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-05-07

--- Comment #1 from Bernd Edlinger <edlinger at gcc dot gnu.org> ---
confirmed, I did not try to test with --target_board=3Dunix/-m32
and the test case is unsupported on x86_64.

I'm not sure what to here,
the test case says
// Test that we don't add the x86 PC thunk to .debug_ranges

but my patch does emit a line number (if there is any) for thunks,
and of course include them in debug_ranges and debug_aranges,
so it is not possible to debug those functions where it was
previously not possible.

intersting that the LFB3 increase from 5 to 9 when I tried this:

diff --git a/gcc/testsuite/g++.dg/debug/dwarf2/thunk1.C
b/gcc/testsuite/g++.dg/d
index 304cf45..3d5f301 100644
--- a/gcc/testsuite/g++.dg/debug/dwarf2/thunk1.C
+++ b/gcc/testsuite/g++.dg/debug/dwarf2/thunk1.C
@@ -1,9 +1,9 @@
-// Test that we don't add the x86 PC thunk to .debug_ranges
+// Test that we do add the x86 PC thunk to .debug_ranges
 // { dg-do compile { target { { i?86-*-* x86_64-*-* } && ia32 } } }
 // { dg-require-effective-target fpic }
 // { dg-skip-if "darwin doesn't use the thunk for PIC" { *-*-darwin* } }
 // { dg-options "-g -fpic -fno-dwarf2-cfi-asm" }
-// { dg-final { scan-assembler-times "LFB3" 5 } }
+// { dg-final { scan-assembler-times "LFB3" 9 } }

 template <class T> void f(T t) { }=