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Use a third variable of XOR nonsense

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This commit is contained in:
James R 2019-12-07 17:03:46 -08:00
parent 5ba363fda6
commit d5816d44f3
1 changed files with 10 additions and 9 deletions
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19
src/strcasestr.c
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@ -23,13 +23,6 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define SWAP( a, b ) \
(\
(a) ^= (b),\
(b) ^= (a),\
(a) ^= (b)\
)
static inline int
trycmp (char **pp, char *cp,
const char *q, size_t qn)
@ -45,8 +38,16 @@ trycmp (char **pp, char *cp,
static inline void
swapp (char ***ppap, char ***ppbp, char **cpap, char **cpbp)
{
SWAP(*(intptr_t *)ppap, *(intptr_t *)ppbp);
SWAP(*(intptr_t *)cpap, *(intptr_t *)cpbp);
char **pp;
char *p;
pp = *ppap;
*ppap = *ppbp;
*ppbp = pp;
p = *cpap;
*cpap = *cpbp;
*cpbp = p;
}
char *