* 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().


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29658 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/main.c b/main.c
index a782939ff3..e100cddba5 100644
--- a/main.c
+++ b/main.c
@@ -15,6 +15,9 @@
 #ifdef HAVE_LOCALE_H
 #include <locale.h>
 #endif
+#ifdef RUBY_DEBUG_ENV
+#include <stdlib.h>
+#endif
 
 RUBY_GLOBAL_SETUP