/usr/include/dovecot/safe-memset.h is in dovecot-dev 1:2.2.9-1ubuntu2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 | #ifndef SAFE_MEMSET_H
#define SAFE_MEMSET_H
/* memset() guaranteed not to get optimized away by compiler.
Should be used instead of memset() when clearing any sensitive data. */
void safe_memset(void *data, int c, size_t size);
#endif
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