diff options
Diffstat (limited to 'archival/libarchive/get_header_tar.c')
| -rw-r--r-- | archival/libarchive/get_header_tar.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/archival/libarchive/get_header_tar.c b/archival/libarchive/get_header_tar.c index 41e3efb50..a63c0fb01 100644 --- a/archival/libarchive/get_header_tar.c +++ b/archival/libarchive/get_header_tar.c @@ -79,10 +79,10 @@ static unsigned long long getOctal(char *str, int len) * * NB: tarballs with NEGATIVE unix times encoded that way were seen! */ - v = first; - /* Sign-extend using 6th bit: */ - v <<= sizeof(unsigned long long)*8 - 7; - v = (long long)v >> (sizeof(unsigned long long)*8 - 7); + /* Sign-extend 7bit 'first' to 64bit 'v' (that is, using 6th bit as sign): */ + first <<= 1; + first >>= 1; /* now 7th bit = 6th bit */ + v = first; /* sign-extend 8 bits to 64 */ while (--len != 0) v = (v << 8) + (unsigned char) *str++; } |