From: Jeff Mitchell <quixoticsycophant@...>
Date: 2004-06-18T19:41:43+09:00
Subject: extension problem with the one-click installer


Could someone confirm the following segfault for the one-click Windows
installer (ruby181-13.exe).  It occurs for the extension compiled with
mingw32-gcc and with VC++ 6.0 SP5.

There is no problem for a homebuilt ruby from the 1.8.1 standard
tarball with either mingw32-gcc or VC++.

> ruby test.rb
test.rb:2: [BUG] Segmentation fault
ruby 1.8.1 (2003-12-25) [i386-mswin32]

-----------------------------------
# extconf.rb:
require 'mkmf'
create_makefile("myclass")
-----------------------------------
# test.rb
require './myclass.so'
loop { MyClass.new }
-----------------------------------
// myclass.c
#include "ruby.h"

struct MyStruct_
{
    int n  ;
} ;

typedef struct MyStruct_ MyStruct ;

void myclass_free(MyStruct* data)
{
    free(data) ;
}

VALUE rb_myclass_initialize( VALUE self )
{
    return Qnil ;
}

static VALUE rb_myclass_s_allocate(VALUE klass)
{
    MyStruct* data ;
    VALUE obj = Data_Make_Struct(klass,
                                 MyStruct,
                                 0,
                                 myclass_free,
                                 data) ;
    return obj ;
}

VALUE cMyClass ;

void Init_myclass()
{
    cMyClass = rb_define_class("MyClass", rb_cObject) ;
    rb_define_alloc_func(cMyClass, rb_myclass_s_allocate) ;
    rb_define_method(cMyClass, "initialize", rb_myclass_initialize, 0) ;
}



		
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