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* main.c: <stdlib.h> is needed, to introduce the getenv(3)

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prototype declaration.  Without it a C compiler shall infer
  the getenv type as "int getenv(...);", but this is totally
  wrong, especially when your machine's sizeof(int) and
  sizeof(char*) differs.  On such environment a return value
  of getenv(3), which is in fact a char*, might first casted
  into a int (loses data here), and then casted back to char*
  by automatic integral promotion fo fit to the prototype of
  ruby_set_debug_option().


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29658 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
shyouhei 2010-11-01 12:43:59 +00:00
parent 93880659c0
commit 83c5219287
2 changed files with 15 additions and 0 deletions
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@ -1,3 +1,15 @@
Mon Nov 1 21:25:57 2010 URABE Shyouhei <shyouhei@ruby-lang.org>
* main.c: <stdlib.h> is needed, to introduce the getenv(3)
prototype declaration. Without it a C compiler shall infer
the getenv type as "int getenv(...);", but this is totally
wrong, especially when your machine's sizeof(int) and
sizeof(char*) differs. On such environment a return value
of getenv(3), which is in fact a char*, might first casted
into a int (loses data here), and then casted back to char*
by automatic integral promotion fo fit to the prototype of
ruby_set_debug_option().
Sun Oct 31 23:27:09 2010 Koichi Sasada <ko1@atdot.net>
* gc.c (finalizer_table, objspace->final.table):

3
main.c
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@ -15,6 +15,9 @@
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#ifdef RUBY_DEBUG_ENV
#include <stdlib.h>
#endif
RUBY_GLOBAL_SETUP