[Mesa-dev] [PATCH] glcpp: initializes version to -1

[Karol Herbst]

for reference the bug I've created for this:
https://bugs.freedesktop.org/show_bug.cgi?id=97420

and thanks for fixing this

2016-11-04 13:22 GMT+01:00 Juan A. Suarez Romero <jasuarez at igalia.com>:
> Shader can define #version as an integer, including 0.
>
> Initializes version to -1 to know later if shader has defined a #version
> or not.
>
> It fixes 4 piglit tests:
>   spec/glsl-1.10/compiler/version-0.frag: crash pass
>   spec/glsl-1.10/compiler/version-0.vert: crash pass
>   spec/glsl-es-3.00/compiler/version-0.frag: crash pass
>   spec/glsl-es-3.00/compiler/version-0.vert: crash pass
>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97420
> ---
>  src/compiler/glsl/glcpp/glcpp-parse.y | 8 ++++----
>  src/compiler/glsl/glcpp/glcpp.h       | 2 +-
>  src/compiler/glsl/glsl_lexer.ll       | 2 +-
>  3 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/src/compiler/glsl/glcpp/glcpp-parse.y b/src/compiler/glsl/glcpp/glcpp-parse.y
> index b80ff04..6207a62 100644
> --- a/src/compiler/glsl/glcpp/glcpp-parse.y
> +++ b/src/compiler/glsl/glcpp/glcpp-parse.y
> @@ -420,13 +420,13 @@ control_line_success:
>                 _glcpp_parser_skip_stack_pop (parser, & @1);
>         } NEWLINE
>  |      HASH_TOKEN VERSION_TOKEN integer_constant NEWLINE {
> -               if (parser->version != 0) {
> +               if (parser->version != -1) {
>                         glcpp_error(& @1, parser, "#version must appear on the first line");
>                 }
>                 _glcpp_parser_handle_version_declaration(parser, $3, NULL, true);
>         }
>  |      HASH_TOKEN VERSION_TOKEN integer_constant IDENTIFIER NEWLINE {
> -               if (parser->version != 0) {
> +               if (parser->version != -1) {
>                         glcpp_error(& @1, parser, "#version must appear on the first line");
>                 }
>                 _glcpp_parser_handle_version_declaration(parser, $3, $4, true);
> @@ -1360,7 +1360,7 @@ glcpp_parser_create(glcpp_extension_iterator extensions, void *state, gl_api api
>     parser->extensions = extensions;
>     parser->state = state;
>     parser->api = api;
> -   parser->version = 0;
> +   parser->version = -1;
>
>     parser->has_new_line_number = 0;
>     parser->new_line_number = 1;
> @@ -2293,7 +2293,7 @@ _glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, intmax_t versio
>                                           const char *es_identifier,
>                                           bool explicitly_set)
>  {
> -   if (parser->version != 0)
> +   if (parser->version != -1)
>        return;
>
>     parser->version = version;
> diff --git a/src/compiler/glsl/glcpp/glcpp.h b/src/compiler/glsl/glcpp/glcpp.h
> index bb4ad67..2acac0c 100644
> --- a/src/compiler/glsl/glcpp/glcpp.h
> +++ b/src/compiler/glsl/glcpp/glcpp.h
> @@ -207,7 +207,7 @@ struct glcpp_parser {
>         glcpp_extension_iterator extensions;
>         void *state;
>         gl_api api;
> -       unsigned version;
> +       int version;
>         bool has_new_line_number;
>         int new_line_number;
>         bool has_new_source_number;
> diff --git a/src/compiler/glsl/glsl_lexer.ll b/src/compiler/glsl/glsl_lexer.ll
> index b473af7..7d1d616 100644
> --- a/src/compiler/glsl/glsl_lexer.ll
> +++ b/src/compiler/glsl/glsl_lexer.ll
> @@ -249,7 +249,7 @@ HASH                ^{SPC}#{SPC}
>                                    yylval->identifier = linear_strdup(mem_ctx, yytext);
>                                    return IDENTIFIER;
>                                 }
> -<PP>[1-9][0-9]*                        {
> +<PP>[0-9][0-9]*                        {
>                                     yylval->n = strtol(yytext, NULL, 10);
>                                     return INTCONSTANT;
>                                 }
> --
> 2.7.4
>
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