tree 7f37b25e1d3c8b56eb8f9485c717a36e62a6b2f2
parent 2fcdd11f6d33b667968a5bc5147e2ba83a2082b8
author David Benjamin <davidben@google.com> 1719003631 -0400
committer Boringssl LUCI CQ <boringssl-scoped@luci-project-accounts.iam.gserviceaccount.com> 1719006816 +0000

Rewrite CBS_get_asn1_int64 slightly

GCC 13.2.0 has a false positive in -Wstringop-overflow. Oddly, I can
only reproduce it with -O2 -march=native. The old code was also correct,
but this version seems to do a better job of avoiding the warning.
Instead of reversing the variable-length string while sign-extending, we
assemble a big-endian sign-extended version and then do a fixed-width
byte swap at the end.

Fixed: 42290598
Change-Id: I6d5de1e1d6d117f6b5947d3a2155e794764eb472
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/69547
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
Auto-Submit: David Benjamin <davidben@google.com>