GNU bug report logs - #61403
30.0.50; C tree-sitter bug?

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Message #8 received at 61403 <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 61403 <at> debbugs.gnu.org
Subject: Re: bug#61403: 30.0.50; C tree-sitter bug?
Date: Sun, 12 Feb 2023 00:27:18 -0800

Po Lu <luangruo <at> yahoo.com> writes:

> Go to sfnt.c in the feature/android branch, and turn on c-ts-mode.
>
> Then, go to line 10754, around which should be the function definition:
>
> /* Load the simple glyph GLYPH into the specified INTERPRETER, scaling
>    it up by INTERPRETER's scale, and run its glyph program if
>    present.  Use the unscaled metrics specified in METRICS.
>
>    Upon success, return NULL and the resulting points and contours in
>    *VALUE.  Else, value is the reason interpretation failed.  */
>
> TEST_STATIC const char *
> sfnt_interpret_simple_glyph (struct sfnt_glyph *glyph,
> 			     struct sfnt_interpreter *interpreter,
> 			     struct sfnt_glyph_metrics *metrics,
> 			     struct sfnt_instructed_outline **value)
> {
>   size_t zone_size, temp, outline_size, i;
>   struct sfnt_interpreter_zone *zone;
>   struct sfnt_interpreter_zone *volatile preserved_zone;
>   sfnt_f26dot6 phantom_point_1_x;
>
> `TEST_STATIC' is fontified as a type.  Perhaps tree-sitter needs
> something along the lines of `c-noise-macros'?

Would it be reasonable to assume that all caps "type" are almost always
macros? If it is, we can optionally defontify these kind of "types".

>
> Likewise for _Noreturn:
>
> _Noreturn static void
> sfnt_interpret_trap (struct sfnt_interpreter *interpreter,
> 		     const char *reason)
> {
>
> _Noreturn is a keyword in 2011 Standard C.  I think the tree-sitter
> parser definition files should be updated to understand it.

Makes sense. I can file an issue on tree-sitter-c’s repo.

Yuan

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