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hostip: Fix for builds that disable all asynchronous DNS

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- Define Curl_resolver_error function only when USE_CURL_ASYNC.

Prior to this change building curl without an asynchronous resolver
backend (c-ares or threaded) and without DoH (DNS-over-HTTPS, which is
also asynchronous but independent of resolver backend) would cause a
build error since Curl_resolver_error is called by and evaluates
variables only available in asynchronous builds.

Reported-by: Benbuck Nason

Fixes https://github.com/curl/curl/issues/6831
Closes https://github.com/curl/curl/pull/6832
This commit is contained in:
Jay Satiro 2021-04-01 15:15:01 -04:00
parent 06a7f2745e
commit 3085ccfae9
1 changed files with 2 additions and 0 deletions
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2
lib/hostip.c
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@ -1130,6 +1130,7 @@ CURLcode Curl_once_resolved(struct Curl_easy *data, bool *protocol_done)
* resolve error
*/
#ifdef USE_CURL_ASYNC
CURLcode Curl_resolver_error(struct Curl_easy *data)
{
const char *host_or_proxy;
@ -1153,3 +1154,4 @@ CURLcode Curl_resolver_error(struct Curl_easy *data)
return result;
}
#endif /* USE_CURL_ASYNC */