Is it possible to make valgrind ignore certain libraries?

Question

Or preferably all of them instead of just my code? My program uses Gtk, Loudmouth and few other things, and these two (and some behind them, libgcrypto, libssl) are causing

Answer 1

With OpenSSL in particular, this is very hard. SSL encryption keys are partially based on uninitialized stack garbage, which means that all decrypted data is contaminated too. This contamination tends to spread beyond OpenSSL itself.

Compiling OpenSSL with a "PURIFY" option may help here. Unfortunately, due to some poorly thought out actions by a major Linux distribution, this is unlikely to become default.

A very blunt workaround is memcheck's --undef-value-errors=no option.