[PING][PATCH v2 1/2] Fix number of children of varobj with stub debug info

[Christian Walther <walther@indel.ch>]

Ping!

On 2022-06-22 at 17:37, Christian Walther <walther@indel.ch> wrote:
> 
> GDB under some circumstances wrongly reports 'numchild="0"' on a
> variable object for a pointer to a C++ class instance when the type
> description from the debug info is a stub that does not include members.
> The code path is missing a call to check_typedef() to look up the
> complete type description. This commit adds it.
> 
> Additional conditions for the bug to occur:
> 1. "print object" is set to "on"
> 2. The class has no run-time type identification (no vtable).
> 
> Debug information of this kind is generated by Clang 13.
> ---
> 
> Changes in v2:
> - fix code style 
> - add second commit to move confusing comment
> 
> ---
> gdb/c-varobj.c | 1 +
> 1 file changed, 1 insertion(+)
> 
> diff --git a/gdb/c-varobj.c b/gdb/c-varobj.c
> index 8fecbd57e08..64c3a9ebf1c 100644
> --- a/gdb/c-varobj.c
> +++ b/gdb/c-varobj.c
> @@ -121,6 +121,7 @@ adjust_value_for_child_access (struct value **value,
>       enclosing_type = value_actual_type (*value, 1, &real_type_found);
>       if (real_type_found)
> 	{
> +	  enclosing_type = check_typedef (enclosing_type);
> 	  *type = enclosing_type;
> 	  *value = value_cast (enclosing_type, *value);
> 	}
> -- 
> 2.25.1


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