[PATCH 4/4] Fix raw-frame-arguments in combination with frame-filters

[Simon Marchi]

On 2020-12-29 12:02 p.m., Hannes Domani via Gdb-patches wrote:
> Currently, if frame-filters are active, raw-values is used instead of
> raw-frame-arguments to decide if a pretty-printer should be invoked for
> frame arguments in a backtrace.
> 
> This adds the PRINT_RAW_FRAME_ARGUMENTS flag to frame_filter_flag which is
> then used in the frame-filter to override the raw flag in enumerate_args.

I'm not sure I understand the problem, but I have a small comment for the
test case:

> diff --git a/gdb/testsuite/gdb.python/py-frame-args.exp b/gdb/testsuite/gdb.python/py-frame-args.exp
> index fd9c1f4342..7c621e1302 100644
> --- a/gdb/testsuite/gdb.python/py-frame-args.exp
> +++ b/gdb/testsuite/gdb.python/py-frame-args.exp
> @@ -34,6 +34,28 @@ gdb_test_no_output "source ${remote_python_file}" "load python file"
>  gdb_breakpoint [gdb_get_line_number "break-here"]
>  gdb_continue_to_breakpoint "break-here" ".* break-here .*"
>  
> +# Test raw-frame-arguments on backtrace with and without frame-filter
> +foreach filtered [list "enable" "disable"] {
> +    gdb_test_no_output "$filtered frame-filter global BasicFrameFilter"
> +
> +    gdb_test "bt 1" \
> +	".*foo \\(x=42, ss=super struct = {\[.\]{3}}\\).*" \
> +	"bt frame-filter=$filtered,pretty"
> +
> +    gdb_test "bt -raw-frame-arguments on 1" \
> +	".*foo \\(x=42, ss=\[.\]{3}\\).*" \
> +	"bt frame-filter=$filtered,raw"
> +
> +    # "set print raw-values" should not affect frame arguments
> +    gdb_test_no_output "set print raw-values on" \
> +	"raw-values-on,frame-filter=$filtered"
> +    gdb_test "bt 1" \
> +	".*foo \\(x=42, ss=super struct = {\[.\]{3}}\\).*" \
> +	"bt frame-filter=$filtered,pretty,raw-values"
> +    gdb_test_no_output "set print raw-values off" \
> +	"raw-values-off,frame-filter=$filtered"
> +}

You can use foreach_with_prefix, that will ensure test names are
unique without having to include frame-filter=$filtered in each
test name.  Something like this:

# Test raw-frame-arguments on backtrace with and without frame-filter
foreach_with_prefix filtered {enable disable} {
    gdb_test_no_output "$filtered frame-filter global BasicFrameFilter"

    gdb_test "bt 1" \
	".*foo \\(x=42, ss=super struct = {\[.\]{3}}\\).*" \
	"bt pretty"

    gdb_test "bt -raw-frame-arguments on 1" \
	".*foo \\(x=42, ss=\[.\]{3}\\).*" \
	"bt raw"

    # "set print raw-values" should not affect frame arguments
    gdb_test_no_output "set print raw-values on"
    gdb_test "bt 1" \
	".*foo \\(x=42, ss=super struct = {\[.\]{3}}\\).*" \
	"bt pretty,raw-values"
    gdb_test_no_output "set print raw-values off"
}

Simon