Bug #1757: cygwin-1.7, gcc4-4.3, and ruby-1.9. method `inspect' called on hidden object (0x10046720) (NotImplementedError)

• Status: Closed
• Assignee: nobu (Nobuyoshi Nakada)
• Target version: 1.9.2
• ruby -v: ruby 1.9.2dev (2009-07-10 trunk 24017) [i386-cygwin]

=begin
I tried compiling ruby-1.9.2-r24017 on cygwin-1.7.0 using gcc-4.3 as follows:

$ cygcheck -f /bin/cygwin1.dll /usr/bin/gcc-4
cygwin-1.7.0-50
gcc4-core-4.3.2-2

$ ../ruby-1.9.2-r24017/configure --program-suffix="-19" --with-ridir="/usr/share/ri-19" CC="gcc-4" CFLAGS="-O2 -pipe -DCCP_WIN_A_TO_POSIX=CCP_WIN_A_TO_POSIX"

$ make

The -DCCP_WIN_A_TO_POSIX=CCP_WIN_A_TO_POSIX above was added to make use of the #if switch introduced in r23468 to skip a deprecated function in cygwin 1.7(, and is not related to the issue that follows). Then,

$ ./miniruby.exe -v -e 'p($:)'
ruby 1.9.2dev (2009-07-10 trunk 24017) [i386-cygwin]
-e:1:in inspect': method inspect' called on hidden object (0x100466f8) (NotImplementedError)
from -e:1:in p' from -e:1:in '

$ ./miniruby.exe -e 'puts($-I)'
-e:1:in puts': method respond_to?' called on hidden object (0x100466f8) (NotImplementedError)
from -e:1:in puts' from -e:1:in '

So, $:, $-I, and $LOAD_PATH seem to be hidden objects, somehow.
=end

[yugui (Yuki Sonoda)]

• Priority changed from Normal to 5
• Target version set to 1.9.2

=begin

=end

[yugui (Yuki Sonoda)]

• Assignee set to nobu (Nobuyoshi Nakada)

=begin

=end

=begin
I was wrong in presuming that -DCCP_WIN_A_TO_POSIX=CCP_WIN_A_TO_POSIX was not related.

1. ../ruby-1.9.2-r24220/configure --program-suffix="-19" --with-ridir="/usr/share/ri-19" CC="gcc-4"
2. Edit Makefile so that
   CFLAGS = ${cflags} -DCCP_WIN_A_TO_POSIX=CCP_WIN_A_TO_POSIX
3. make

$ ./miniruby.exe -ve "p($:)";
ruby 1.9.2dev (2009-07-21 trunk 24220) [i386-cygwin]
-e:1:in inspect': method inspect' called on hidden object (0x10046658) (NotImplementedError)
from -e:1:in p' from -e:1:in '

Something about #define BASEPATH() in r23468 seemed to be related to this issue. The correct behavior could be recovered by using rb_str_buf_cat() instead of rb_str_dup() in case #if !VARIABLE_LIBPATH is false. But I am not sure if it is the right way to fix it. Can anybody verify this?

--- src/ruby-1.9.2-r24220/ruby.c 2009-06-23 01:21:09.000000000 +0900
+++ newsrc/ruby-1.9.2-r24220/ruby.c 2009-07-22 22:00:18.282555100 +0900
@@ -350,8 +363,8 @@ ruby_init_loadpath_safe(int safe_level)
VALUE sopath;

else

  char libpath[MAXPATHLEN + 1];

• size_t baselen;

endif

• size_t baselen;
  char *p;

#if defined _WIN32 || defined CYGWIN
@@ -414,15 +427,13 @@ ruby_init_loadpath_safe(int safe_level)
p = libpath + 1;
}

• baselen = p - libpath;

-#define BASEPATH() rb_str_buf_cat(rb_str_buf_new(baselen+len), libpath, baselen)
#else
rb_str_set_len(sopath, p - libpath);

-#define BASEPATH() rb_str_dup(sopath)
#endif

• baselen = p - libpath;
  +#define BASEPATH() rb_str_buf_cat(rb_str_buf_new(baselen+len), libpath, baselen)

#define RUBY_RELATIVE(path, len) rb_str_buf_cat(BASEPATH(), path, len)
#else
#define RUBY_RELATIVE(path, len) rubylib_mangled_path(path, len)

$ ./miniruby.exe -ve "p($:)";
ruby 1.9.2dev (2009-07-21 trunk 24220) [i386-cygwin]
["/tmp/ruby19/ruby19-1.9.2devr24220-0/build/lib/ruby/site_ruby/1.9.1", "/tmp/ruby19/ruby19-1.9.2devr24220-0/build/lib/ruby/site_ruby/1.9.1/i386-cygwin", "/tmp/ruby19/ruby19-1.9.2devr24220-0/build/lib/ruby/site_ruby", "/tmp/ruby19/ruby19-1.9.2devr24220-0/build/lib/ruby/vendor_ruby/1.9.1", "/tmp/ruby19/ruby19-1.9.2devr24220-0/build/lib/ruby/vendor_ruby/1.9.1/i386-cygwin", "/tmp/ruby19/ruby19-1.9.2devr24220-0/build/lib/ruby/vendor_ruby", "/tmp/ruby19/ruby19-1.9.2devr24220-0/build/lib/ruby/1.9.1", "/tmp/ruby19/ruby19-1.9.2devr24220-0/build/lib/ruby/1.9.1/i386-cygwin"]

=end

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

=begin
This issue was solved with changeset r25390.
neomjp, thank you for your reporting of the issue.
You have greatfully contributed toward Ruby.
May Ruby be with you.

=end