Matteo Bruni : vkd3d-shader/preproc: Don't add additional spaces after whitespace tokens.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: d2104522fe42cc565c431c7aecb14d00fb32e741
URL:    https://source.winehq.org/git/vkd3d.git/?a=commit;h=d2104522fe42cc565c431c7a...

Author: Matteo Bruni <mbruni(a)codeweavers.com>
Date:   Wed Mar 30 23:38:32 2022 +0200

vkd3d-shader/preproc: Don't add additional spaces after whitespace tokens.

This is especially a problem when e.g. it introduces a whitespace
before a #pragma directive, breaking shader compilation.

Signed-off-by: Matteo Bruni <mbruni(a)codeweavers.com>
Signed-off-by: Zebediah Figura <zfigura(a)codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 libs/vkd3d-shader/preproc.l | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libs/vkd3d-shader/preproc.l b/libs/vkd3d-shader/preproc.l
index 20cb0c35..7686e018 100644
--- a/libs/vkd3d-shader/preproc.l
+++ b/libs/vkd3d-shader/preproc.l
@@ -578,7 +578,10 @@ int yylex(YYSTYPE *lval, YYLTYPE *lloc, yyscan_t scanner)
                 if (ctx->current_directive)
                     return return_token(token, lval, text);
 
-                vkd3d_string_buffer_printf(&ctx->buffer, "%s ", text);
+                if (isspace(text[0]))
+                    vkd3d_string_buffer_printf(&ctx->buffer, "%s", text);
+                else
+                    vkd3d_string_buffer_printf(&ctx->buffer, "%s ", text);
                 break;
             }