[Bug debug/96997] [10/11 Regression] step over in gdb always stops in basic_string(const _CharT* __s, const _Alloc& __a = _Alloc())

["jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96997

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The -fdump-tree-gimple-lineno changes between the previous revision and the
above one are:
--- pr96997.ii.005t.gimple_     2021-02-16 12:04:49.000000000 -0500
+++ pr96997.ii.005t.gimple      2021-02-16 12:05:28.000000000 -0500
@@ -6,12 +6,12 @@ main ()
   struct allocator D.36274;
   int D.39876;

-  [./example.cpp:7:27] std::allocator<char>::allocator ([./example.cpp:7:27]
&D.36232);
+  [./example.cpp:7:40] std::allocator<char>::allocator ([./example.cpp:7:40]
&D.36232);
   [./example.cpp:7:19] try
     {
       try
         {
-          [./example.cpp:7:27] std::__cxx11::basic_string<char>::basic_string
([./example.cpp:7:27] &D.36233, [./example.cpp:7:27] "str1", &D.36232);
+          [./example.cpp:7:40] std::__cxx11::basic_string<char>::basic_string
([./example.cpp:7:40] &D.36233, [./example.cpp:7:40] "str1",
[/opt/compiler-explorer/gcc-9.3.0/include/c++/9.3.0/bits/basic_string.h:525:59]
&D.36232);
           try
             {
               try
@@ -30,19 +30,19 @@ main ()
         }
       finally
         {
-          [./example.cpp:7:27] std::allocator<char>::~allocator
([./example.cpp:7:27] &D.36232);
+         
[/opt/compiler-explorer/gcc-9.3.0/include/c++/9.3.0/bits/basic_string.h:525:59]
std::allocator<char>::~allocator
([/opt/compiler-explorer/gcc-9.3.0/include/c++/9.3.0/bits/basic_string.h:525:59]
&D.36232);
         }
     }
   finally
     {
-      [./example.cpp:7:27] D.36232 = {CLOBBER};
+     
[/opt/compiler-explorer/gcc-9.3.0/include/c++/9.3.0/bits/basic_string.h:525:59]
D.36232 = {CLOBBER};
     }
twice (second time for example.cpp:8).