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[IP] AddrCountPrefixBits(): Fix loop condition (#4556)

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Properly handle BitTest reaching 0.

CORE-18225
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Serge Gautherie 2022-06-25 17:14:03 +02:00 • committed by GitHub
parent d4a398fb13
commit ef1311b7a4
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sdk/lib/drivers/ip/network/address.c
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@ -71,7 +71,7 @@ UINT AddrCountPrefixBits( PIP_ADDRESS Netmask ) {
ULONG TestMask = IPv4NToHl(Netmask->Address.IPv4Address); ULONG TestMask = IPv4NToHl(Netmask->Address.IPv4Address);
while( (BitTest & TestMask) == BitTest ) { while ((BitTest & TestMask) != 0) {
Prefix++; Prefix++;
BitTest >>= 1; BitTest >>= 1;
} }