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  • 卜部昌平's avatar
    83c52192
    * main.c: <stdlib.h> is needed, to introduce the getenv(3) · 83c52192
    卜部昌平 authored 
      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
    83c52192
    * main.c: <stdlib.h> is needed, to introduce the getenv(3)
    卜部昌平 authored 
      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