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url.c: add a compile-time check that CURL_MAX_WRITE_SIZE is large enough

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Some code (e.g. Curl_fillreadbuffer) assumes that this buffer is not
exceedingly tiny and will break if it is. This same check is already
done at run time in the CURLOPT_BUFFERSIZE option.
This commit is contained in:
Dan Fandrich 2017-05-13 22:54:59 +02:00
parent b1fa80b84f
commit d836c9fee4
2 changed files with 11 additions and 1 deletions
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3
docs/libcurl/opts/CURLOPT_BUFFERSIZE.3
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@ -37,7 +37,8 @@ This is just treated as a request, not an order. You cannot be guaranteed to
actually get the given size.
This buffer size is by default \fICURL_MAX_WRITE_SIZE\fP (16kB). The maximum
buffer size allowed to set is \fICURL_MAX_READ_SIZE\fP (512kB).
buffer size allowed to be set is \fICURL_MAX_READ_SIZE\fP (512kB). The minimum
buffer size allowed to be set is 1024.
.SH DEFAULT
CURL_MAX_WRITE_SIZE (16kB)
.SH PROTOCOLS