No key found when compiling with -O4 (working with -O2)

[sylvainpelissier]

When using the default compilation flags aeskeyfind does not locate any keys on the following file. However compiling with -O2 option works fine. Here is my gcc version:

gcc (Ubuntu 8.3.0-6ubuntu1~18.10.1) 8.3.0

aeskeyschedule.zip

[Schnoudli]

I have a similar issue on my Mac. When compiled with the default flags, no key is found. It must be compiled with -O1 to make it work.

Apple LLVM version 8.0.0 (clang-800.0.42.1)