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Fix a bug in MdePkg BaseLib: StrnCat() and AsciiStrnCat() should NULL terminated the final destination string when Length is equal to the length of Source string 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9588 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8 2009-12-23 01:50:10 +00:00
parent 8595f12dc5
commit 8f635c36ad
1 changed files with 10 additions and 2 deletions
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12
MdePkg/Library/BaseLib/String.c
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@ -425,7 +425,11 @@ StrnCat (
IN UINTN Length IN UINTN Length
) )
{ {
StrnCpy (Destination + StrLen (Destination), Source, Length); UINTN DestinationLen;
DestinationLen = StrLen (Destination);
StrnCpy (Destination + DestinationLen, Source, Length);
Destination[DestinationLen + Length] = L'\0';
// //
// Size of the resulting string should never be zero. // Size of the resulting string should never be zero.
@ -1566,7 +1570,11 @@ AsciiStrnCat (
IN UINTN Length IN UINTN Length
) )
{ {
AsciiStrnCpy (Destination + AsciiStrLen (Destination), Source, Length); UINTN DestinationLen;
DestinationLen = AsciiStrLen (Destination);
AsciiStrnCpy (Destination + DestinationLen, Source, Length);
Destination[DestinationLen + Length] = '\0';
// //
// Size of the resulting string should never be zero. // Size of the resulting string should never be zero.