recognize binary constants
Sparse doesn't parse binary constants properly so the following code
generates an error:
x = 0b11;
test.c:5:17: error: constant 0b11 is not a valid number
Kamal: add call to tolower(), since "0B11" is also a valid syntax.
Reported-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Christopher Li <sparse@chrisli.org>
diff --git a/expression.c b/expression.c
index d9cdfd3..0ae3a60 100644
--- a/expression.c
+++ b/expression.c
@@ -268,6 +268,13 @@
#define ULLONG_MAX (~0ULL)
#endif
+static unsigned long long parse_num(const char *nptr, char **end)
+{
+ if (nptr[0] == '0' && tolower(nptr[1]) == 'b')
+ return strtoull(&nptr[2], end, 2);
+ return strtoull(nptr, end, 0);
+}
+
static void get_number_value(struct expression *expr, struct token *token)
{
const char *str = token->number;
@@ -279,7 +286,7 @@
int bits;
errno = 0;
- value = strtoull(str, &end, 0);
+ value = parse_num(str, &end);
if (end == str)
goto Float;
if (value == ULLONG_MAX && errno == ERANGE)
