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"Fix" a few more cases where Paradigm C++ may mis-compile 16-bit right shifts on 32-bit quantities

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This commit is contained in:
jifl 2007-08-27 01:59:52 +00:00
parent 5a6b1cbf66
commit 5e7b7cba31
1 changed files with 4 additions and 4 deletions
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8
src/core/inet.c
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@ -152,7 +152,7 @@ lwip_standard_chksum(void *dataptr, int len)
sum += t;
/* Fold 32-bit sum to 16 bits */
while (sum >> 16)
while ((sum >> 16) != 0)
sum = (sum & 0xffff) + (sum >> 16);
/* Swap if alignment was odd */
@ -229,7 +229,7 @@ lwip_standard_chksum(void *dataptr, int len)
sum += t; /* add end bytes */
while (sum >> 16) /* combine halves */
while ((sum >> 16) != 0) /* combine halves */
sum = (sum >> 16) + (sum & 0xffff);
if (odd)
@ -313,7 +313,7 @@ inet_chksum(void *dataptr, u16_t len)
u32_t acc;
acc = LWIP_CHKSUM(dataptr, len);
while (acc >> 16) {
while ((acc >> 16) != 0) {
acc = (acc & 0xffff) + (acc >> 16);
}
return (u16_t)~(acc & 0xffff);
@ -337,7 +337,7 @@ inet_chksum_pbuf(struct pbuf *p)
swapped = 0;
for(q = p; q != NULL; q = q->next) {
acc += LWIP_CHKSUM(q->payload, q->len);
while (acc >> 16) {
while ((acc >> 16) != 0) {
acc = (acc & 0xffffUL) + (acc >> 16);
}
if (q->len % 2 != 0) {