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author | Johannes Schindelin <johannes.schindelin@gmx.de> | 2017-06-26 23:15:22 +0200 |
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committer | Daniel Stenberg <daniel@haxx.se> | 2017-07-03 15:45:25 +0200 |
commit | c0cdc68c7eacaa4fda3e2324f8618b6bbe038983 (patch) | |
tree | d1b191bc2d7800a89f8be851ced14f76e2b4bb5e /docs/examples/ftpgetresp.c | |
parent | 3a48a132685ca891ce1b7a10bbcd4b4cd33cee5e (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/examples/ftpgetresp.c')
0 files changed, 0 insertions, 0 deletions