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include: revert 9adf3c4 and make public types void * again

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Many applications assume the actual contents of the public types and use
that do for example forward declarations (saving them from including our
public header) which then breaks when we switch from void * to a struct
*.

I'm not convinced we were wrong, but since this practise seems
widespread enough I'm willing to (partly) step down.

Now libcurl uses the struct itself when it is built and it allows
applications to use the struct type if CURL_STRICTER is defined at the
time of the #include.

Reported-by: Peter Frühberger
Fixes #926
This commit is contained in:
Daniel Stenberg 2016-07-31 11:48:44 +02:00
parent 2bbed9c4f0
commit d6604524ad
2 changed files with 10 additions and 1 deletions
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4
include/curl/multi.h
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@ -52,7 +52,11 @@
extern "C" {
#endif
#if defined(BUILDING_LIBCURL) || defined(CURL_STRICTER)
typedef struct Curl_multi CURLM;
#else
typedef void CURLM;
#endif
typedef enum {
CURLM_CALL_MULTI_PERFORM = -1, /* please call curl_multi_perform() or