[Python-Dev] cpython: Use strncat() instead of strcat() to silence some warnings. (original) (raw)
Christian Heimes christian at python.org
Sat Jul 20 15:29:45 CEST 2013
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Am 20.07.2013 14:23, schrieb Serhiy Storchaka:
This will wrong when strlen(fname) is 30. strncat() will copy only 30 bytes, without terminal NUL.
http://linux.die.net/man/3/strncat
The strncat() function is similar, except that
it will use at most n bytes from src; and
src does not need to be null-terminated if it contains n or more bytes.
If src contains n or more bytes, strncat() writes n+1 bytes to dest (n from src plus the terminating null byte). Therefore, the size of dest must be at least strlen(dest)+n+1.
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