Re: [PATCH v2] Minor 'debug_*' function improvements

On 8/6/26 10:30 PM, Tom Tromey wrote:
> I wanted to get a summary of a type in gdb and then realized I had
> forgotten the function name, so I had to dig around to find it.  This
> made me think that perhaps renaming the debug_* functions to all just
> be named 'debug' would be an improvement, since it's easier to
> remember.
> 
> Then I noticed that debug_type and debug_val don't print a trailing
> newline.
> 
> Finally, I needed to be able to see the contents of a gdb_mpz.
> 
> v2 changes these functions to use ATTRIBUTE_USED rather than
> ATTRIBUTE_UNUSED, as the former indicates that these should not be
> deleted even if apparently unused.

Hi Tom,

thanks for doing this.

No further comments.

Approved-By: Tom de Vries <[email protected]>

Thanks,
- Tom

> ---
>   gdb/expprint.c  |  4 ++--
>   gdb/gmp-utils.c | 12 ++++++++++++
>   gdb/typeprint.c |  7 ++++---
>   gdb/valprint.c  |  7 ++++---
>   4 files changed, 22 insertions(+), 8 deletions(-)
> 
> diff --git a/gdb/expprint.c b/gdb/expprint.c
> index bc1929b1a1b..4859d48f6a4 100644
> --- a/gdb/expprint.c
> +++ b/gdb/expprint.c
> @@ -35,13 +35,13 @@
>   
>   
>   /* Meant to be used in debug sessions, so don't export it in a header file.  */
> -extern void ATTRIBUTE_USED debug_exp (struct expression *exp);
> +extern void ATTRIBUTE_USED debug (struct expression *exp);
>   
>   /* Print EXP.  */
>   
>   void
>   ATTRIBUTE_USED
> -debug_exp (struct expression *exp)
> +debug (struct expression *exp)
>   {
>     exp->dump (gdb_stdlog);
>     gdb_flush (gdb_stdlog);
> diff --git a/gdb/gmp-utils.c b/gdb/gmp-utils.c
> index 168479c50df..b7fed9a82d1 100644
> --- a/gdb/gmp-utils.c
> +++ b/gdb/gmp-utils.c
> @@ -39,6 +39,18 @@ gmp_string_printf (const char *fmt, ...)
>     return str;
>   }
>   
> +/* Meant to be used in debug sessions, so don't export it in a header file.  */
> +extern void ATTRIBUTE_USED debug (const gdb_mpz &);
> +
> +/* Print VAL.  */
> +
> +void ATTRIBUTE_USED
> +debug (const gdb_mpz &val)
> +{
> +  gdb_printf (gdb_stdlog, "%s\n", val.str ().c_str ());
> +  gdb_flush (gdb_stdlog);
> +}
> +
>   /* See gmp-utils.h.  */
>   
>   void
> diff --git a/gdb/typeprint.c b/gdb/typeprint.c
> index 31a9c1814a3..7d1ebc6fdca 100644
> --- a/gdb/typeprint.c
> +++ b/gdb/typeprint.c
> @@ -516,14 +516,15 @@ ptype_command (const char *type_name, int from_tty)
>   }
>   
>   /* Meant to be used in debug sessions, so don't export it in a header file.  */
> -extern void ATTRIBUTE_UNUSED debug_type (struct type *type);
> +extern void ATTRIBUTE_USED debug (struct type *type);
>   
>   /* Print TYPE.  */
>   
> -void ATTRIBUTE_UNUSED
> -debug_type (struct type *type)
> +void ATTRIBUTE_USED
> +debug (struct type *type)
>   {
>     type_print (type, "", gdb_stdlog, 1);
> +  gdb_printf (gdb_stdlog, "\n");
>     gdb_flush (gdb_stdlog);
>   }
>   
> diff --git a/gdb/valprint.c b/gdb/valprint.c
> index 50a4663ca3b..3e7a37338b3 100644
> --- a/gdb/valprint.c
> +++ b/gdb/valprint.c
> @@ -1232,14 +1232,15 @@ value_print (struct value *val, struct ui_file *stream,
>   }
>   
>   /* Meant to be used in debug sessions, so don't export it in a header file.  */
> -extern void ATTRIBUTE_UNUSED debug_val (struct value *val);
> +extern void ATTRIBUTE_USED debug (struct value *val);
>   
>   /* Print VAL.  */
>   
> -void ATTRIBUTE_UNUSED
> -debug_val (struct value *val)
> +void ATTRIBUTE_USED
> +debug (struct value *val)
>   {
>     value_print (val, gdb_stdlog, &user_print_options);
> +  gdb_printf (gdb_stdlog, "\n");
>     gdb_flush (gdb_stdlog);
>   }
>   
> 
> base-commit: 035b2e70824ab51ec4d6754345456622c618b450