* [PATCH] fix {pp-number} ## ...
@ 2024-02-16 18:44 Alexey Dobriyan
0 siblings, 0 replies; only message in thread
From: Alexey Dobriyan @ 2024-02-16 18:44 UTC (permalink / raw
To: Luc Van Oostenryck; +Cc: linux-sparse
pp-number token may have arbitrary number of dots after first digit
pp-number:
digit
. digit
pp-number .
which means that merging any pp-number with ... is valid operation and
should yield pp-number:
#define M(a,b) a##b
M(1,...)
should preprocess to
1...
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
pre-process.c | 3 +++
1 file changed, 3 insertions(+)
--- a/pre-process.c
+++ b/pre-process.c
@@ -482,6 +482,7 @@ static void expand_arguments(int count, struct arg *args)
* - number + number -> number
* - number + ident -> number
* - number + '.' -> number
+ * - number + '...' -> number
* - number + '+' or '-' -> number, if number used to end on [eEpP].
* - '.' + number -> number, if number used to start with a digit.
* - special + special -> either special or an error.
@@ -524,6 +525,8 @@ static enum token_type combine(struct token *left, struct token *right, char *p)
switch (right->special) {
case '.':
break;
+ case SPECIAL_ELLIPSIS:
+ break;
case '+': case '-':
if (strchr("eEpP", p[len - 2]))
break;
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2024-02-16 18:44 [PATCH] fix {pp-number} ## Alexey Dobriyan
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