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authorAlan Jenkins <alan.christopher.jenkins@gmail.com>2017-04-22 21:16:44 +0100
committerDaniel Stenberg <daniel@haxx.se>2017-04-22 22:35:46 +0200
commitbe299a4dba0362940062f7f07c76862ecf226522 (patch)
tree334ad7fec4e9d609ff79f8553748cddbca681756 /docs
parent4a8cf6c4044a1692b441b64a52d1750a92b798ee (diff)
multi: clarify condition in curl_multi_wait
`if(nfds || extra_nfds) {` is followed by `malloc(nfds * ...)`. If `extra_fs` could be non-zero when `nfds` was zero, then we have `malloc(0)` which is allowed to return `NULL`. But, malloc returning NULL can be confusing. In this code, the next line would treat the NULL as an allocation failure. It turns out, if `nfds` is zero then `extra_nfds` must also be zero. The final value of `nfds` includes `extra_nfds`. So the test for `extra_nfds` is redundant. It can only confuse the reader. Closes #1439
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