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authorRich Felker <dalias@aerifal.cx>2012-08-09 20:47:17 -0400
committerRich Felker <dalias@aerifal.cx>2012-08-09 20:47:17 -0400
commitb3c4cc121f70faea45389fe7ddc1127ed5cbd8bb (patch)
tree3bebd913d79b7acac599853a2e82c0831421ae77 /src/misc/getrlimit.c
parentae0b9da48c91087c5ab78e4918deb69665d0ccc6 (diff)
downloadmusl-b3c4cc121f70faea45389fe7ddc1127ed5cbd8bb.tar.gz
make crypt return an unmatchable hash rather than NULL on failure
unfortunately, a large portion of programs which call crypt are not prepared for its failure and do not check that the return value is non-null before using it. thus, always "succeeding" but giving an unmatchable hash is reportedly a better behavior than failing on error. it was suggested that we could do this the same way as other implementations and put the null-to-unmatchable translation in the wrapper rather than the individual crypt modules like crypt_des, but when i tried to do it, i found it was making the logic in __crypt_r for keeping track of which hash type we're working with and whether it succeeded or failed much more complex, and potentially error-prone. the way i'm doing it now seems to have essentially zero cost, anyway.
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