ruby.git/missing/crypt.h, branch v3_2_11

add #include guard hack

2020-04-13T07:06:00+00:00

According to MSVC manual (*1), cl.exe can skip including a header file
when that:

- contains #pragma once, or
- starts with #ifndef, or
- starts with #if ! defined.

GCC has a similar trick (*2), but it acts more stricter (e. g. there
must be _no tokens_ outside of #ifndef...#endif).

Sun C lacked #pragma once for a looong time.  Oracle Developer Studio
12.5 finally implemented it, but we cannot assume such recent version.

This changeset modifies header files so that each of them include
strictly one #ifndef...#endif.  I believe this is the most portable way
to trigger compiler optimizations. [Bug #16770]

*1: https://docs.microsoft.com/en-us/cpp/preprocessor/once
*2: https://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html

string.c: fix memory leak in String#crypt

2017-11-12T15:55:04+00:00

Use ALLOCV to allocate struct crypt_data for slightly cleaner and less
error-prone code. It is currently possible it leaks when an invalid
argument is passed to String#crypt or rb_str_new_cstr() fails to
allocate memory.

SIZEOF_CRYPT_DATA macro in missing/crypt.h is removed since it is not
used any longer.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60748 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

string.c: for small crypt_data

2017-05-24T06:55:09+00:00

* string.c (rb_str_crypt): struct crypt_data defined in
  missing/crypt.h is small enough.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58866 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Use LONG_LONG

2016-06-29T04:37:12+00:00

* missing/crypt.h (B64): use LONG_LONG instead of long long
  directly.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55533 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

crypt.h: remove initialized

2016-06-04T01:54:54+00:00

* missing/crypt.h (struct crypt_data): remove unnecessary member
  "initialized".
* missing/crypt.c (des_setkey_r): nothing to be initialized in
  crypt_data.
* configure.in (struct crypt_data): check for "initialized" in
  struct crypt_data, which may be only in glibc, and isn't on AIX
  at least.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55272 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

crypt.h: get rid of conflict

2016-06-01T10:24:10+00:00

* missing/crypt.h: move crypt.h to get rid of conflict with the
  system header.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55247 b2dd03c8-39d4-4d8f-98ff-823fe69b080e