obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
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if you have obtained the source via the command 'git clone',
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1 files changed, 70 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/debug/dwarf2/inline2.c b/gcc/testsuite/gcc.dg/debug/dwarf2/inline2.c
new file mode 100644
index 000000000..20edb588e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/debug/dwarf2/inline2.c
@@ -0,0 +1,70 @@
+/* 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 -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 \\(\[^\n\]*\\) 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 \\(\[^\n\]*\\) 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;
+}
+
+