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[type1] Add comment to warn about read() as macro.

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In case we are ever tempted to simplify the function pointer, warn that it
may alias with a macro.
This commit is contained in:
Chris Wilson 2008-10-16 08:49:13 +01:00
parent ff9ee74b37
commit c1164a574d
1 changed files with 5 additions and 0 deletions
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5
src/cairo-type1-subset.c
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@ -1215,6 +1215,11 @@ cairo_type1_font_subset_generate (void *abstract_font,
}
if (font->face->stream->read != NULL) {
/* Note that read() may be implemented as a macro, thanks POSIX!, so we
* need to wrap the following usage in parentheses in order to
* disambiguate it for the pre-processor - using the verbose function
* pointer dereference for clarity.
*/
ret = (* font->face->stream->read) (font->face->stream, 0,
(unsigned char *) font->type1_data,
font->type1_length);