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BR3005117: Expland local single macro before pasting tokens

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When we have switched to unified token pasting code we loose
backward compatibility. Restore it.

Note that new code MUST not expluatate this facility but rather
use paste macro %+ explicitly.

N.B. this patch is probably the candidate for revert, though
to give it a chance I commit it.

Reported-by: Alexey Dokuchaev
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
This commit is contained in:
Cyrill Gorcunov 2010-06-02 00:59:21 +04:00
parent f237c71c0d
commit ec88c1beac
1 changed files with 26 additions and 0 deletions
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26
preproc.c
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@ -3742,6 +3742,32 @@ static Token *expand_mmac_params(Token * tline)
}
delete_Token(t);
changed = true;
} else if (tline->type == TOK_PREPROC_ID &&
tline->text[0] == '%' && tline->text[1] == '$' &&
(tok_type_(tline->next, TOK_ID) ||
tok_type_(tline->next, TOK_PREPROC_ID) ||
tok_type_(tline->next, TOK_NUMBER) ||
tok_type_(tline->next, TOK_FLOAT))) {
/*
* In a sake of backward compatibility we allow
* to expand local single macro that early before
* pasting token code have place
*
* NOTE: that new code MUST use %+ macro to obtain
* same result
*/
t = tline;
tline = tline->next;
tt = tokenize(t->text);
tt = expand_smacro(tt);
*tail = tt;
while (tt) {
tt->a.mac = NULL;
tail = &tt->next;
tt = tt->next;
}
delete_Token(t);
changed = true;
} else {
t = *tail = tline;
tline = tline->next;