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glcpp: Add an explicit diagnostic for #if with no expression.

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This is more clear than the previously-generated diagnostic which was
something confusing like "enexpected newline".

This change makse test 080-if-witout-expression.c now pass.
This commit is contained in:
Carl Worth
2010-08-11 13:59:22 -07:00
parent 624dd585c7
commit 253cad3f42
2 changed files with 14 additions and 1 deletions
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10
src/glsl/glcpp/glcpp-parse.y
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@@ -241,6 +241,16 @@ control_line:
parser->skip_stack->type = SKIP_TO_ENDIF; parser->skip_stack->type = SKIP_TO_ENDIF;
} }
} }
| HASH_IF NEWLINE {
/* #if without an expression is only an error if we
* are not skipping */
if (parser->skip_stack == NULL ||
parser->skip_stack->type == SKIP_NO_SKIP)
{
glcpp_error(& @1, parser, "#if with no expression");
}
_glcpp_parser_skip_stack_push_if (parser, & @1, 0);
}
| HASH_IFDEF IDENTIFIER junk NEWLINE { | HASH_IFDEF IDENTIFIER junk NEWLINE {
macro_t *macro = hash_table_find (parser->defines, $2); macro_t *macro = hash_table_find (parser->defines, $2);
talloc_free ($2); talloc_free ($2);

3
src/glsl/glcpp/tests/080-if-without-expression.c.expected
View File

@@ -1,3 +1,6 @@
0:2(1): preprocessor error: #if with no expression 0:2(1): preprocessor error: #if with no expression