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authorJohannes Schindelin <johannes.schindelin@gmx.de>2017-06-26 23:15:22 +0200
committerDaniel Stenberg <daniel@haxx.se>2017-07-03 15:45:25 +0200
commitc0cdc68c7eacaa4fda3e2324f8618b6bbe038983 (patch)
treed1b191bc2d7800a89f8be851ced14f76e2b4bb5e /docs/cmdline-opts/resolve.d
parent3a48a132685ca891ce1b7a10bbcd4b4cd33cee5e (diff)
gtls: fix build when sizeof(long) < sizeof(void *)
- Change gnutls pointer/int macros to pointer/curl_socket_t. Prior to this change they used long type as well. The size of the `long` data type can be shorter than that of pointer types. This is the case most notably on Windows. If C99 were acceptable, we could simply use `intptr_t` here. But we want to retain C89 compatibility. Simply use the trick of performing pointer arithmetic with the NULL pointer: to convert an integer `i` to a pointer, simply take the address of the `i`th element of a hypothetical character array starting at address NULL. To convert back, simply cast the pointer difference. Thanks to Jay Satiro for the initial modification to use curl_socket_t instead of int/long. Closes #1617 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Diffstat (limited to 'docs/cmdline-opts/resolve.d')
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