Split one big test to seven tests.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35932 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* process.c (rb_exec_fillarg): check use_shell field before accessing
  a union field.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35933 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/dl/test_c_{struct_entry,union_entity}.rb: sorry, typos.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35934 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* process.c (rb_run_exec_options_err): allocate a temporary buffer for
  run_exec_dup2() for restoring fds on non-fork environments.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35935 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* win32/win32.c (rb_w32_close): of course, console handle is not socket.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35936 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* win32/win32.c, include/ruby/win32.h (rb_w32_wrap_io_handle): new API.
  this API wraps an I/O handle (HANDLE or SOCKET) and returns fd.
  the second parameter should be combination of O_*, for example,
  O_RDWR | O_BINARY | O_NOINHERT.

* win32/win32.c, include/ruby/win32.h (rb_w32_unwrap_io_handle): new
  API.  this API unwraps an I/O handle and close the fd (not closes
  the handle itself).

[Feature #4960] [ruby-core:37227]



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35937 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ChangeLog: typo.  [Feature #4906]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35938 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* process.c (try_with_sh): take envp argument.
  (exec_with_sh): ditto.  use it for execve.
  (proc_exec_v): provide envp for try_with_sh.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35943 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* process.c (proc_exec_v): don't call dln_find_exe_r here because it
  is not async-signal-safe and proc_exec_v is called in a child
  process.
  command_abspath field of rb_exec_arg.
  (rb_exec_fillarg): call dln_find_exe_r and set command_abspath.
  (rb_exec_err): Give the absolute path of the invoking command for
  proc_exec_v, instead of the command name.

* internal.h: add command_abspath field for rb_exec_arg. 



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35944 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
update async-signal-safe comments.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35945 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
add a test.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35946 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* process.c (try_with_sh): please take care of the macro defined by
  you.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35947 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* process.c (proc_exec_cmd) renamed from proc_exec_v.
  (proc_exec_sh): renamed from rb_proc_exec_e.
  (proc_spawn_cmd_internal): renamed from proc_spawn_v.
  (proc_spawn_cmd): renamed from proc_spawn_n.
  (proc_spawn_sh): renamed from proc_spawn.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35948 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
remove wrong comments.
earg is processed by surrounding rb_run_exec_options_err call.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35949 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
fix a comment.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35950 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* .gdbinit: add function `trace_machine_instructions' to trace
  in native machine assemble.
  See https://bugs.ruby-lang.org/projects/ruby-trunk/wiki/MachineInstructionsTraceWithGDB
  for more details.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35951 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2012-06-07

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35952 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* include/ruby/intern.h: rb_exec_arg and related stuff moved back from
  internal.h



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35954 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* process.c (rb_fork_err): Fix the conditoin to use rb_protect.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35955 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* thread_win32.c (native_thread_create): add a comment.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35956 b2dd03c8-39d4-4d8f-98ff-823fe69b080e