[#102652] [Ruby master Bug#17664] Behavior of sockets changed in Ruby 3.0 to non-blocking — ciconia@...
Issue #17664 has been reported by ciconia (Sharon Rosner).
23 messages
2021/02/28
[ruby-core:102617] [Ruby master Bug#17657] Starting from ruby 2.3.0, LoadLibraryExA called in extension won't use PATH or current directory to find library and/or it's dependencies
From:
egzumer@...
Date:
2021-02-26 11:13:57 UTC
List:
ruby-core #102617
Issue #17657 has been updated by egzi (Krzysztof Egzmont).
Well, it turns out I did miss one thing
https://github.com/oneclick/rubyinstaller2/wiki/For-gem-developers#-dll-loading
Sorry, please close this issue.
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Bug #17657: Starting from ruby 2.3.0, LoadLibraryExA called in extension won't use PATH or current directory to find library and/or it's dependencies
https://bugs.ruby-lang.org/issues/17657#change-90604
* Author: egzi (Krzysztof Egzmont)
* Status: Open
* Priority: Normal
* ruby -v: ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [x64-mingw32]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
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I'm on windows 10 pro. The sample code runs successfully on ruby up to 2.2.5.
On newer versions I get "cannot load such file". The fallowing documentation lists PATH environment variable as one of the search paths, that are used to locate DLL modules, but it gets ignored.
https://docs.microsoft.com/en-us/windows/win32/dlls/dynamic-link-library-search-order#standard-search-order-for-desktop-applications
I suspect some permission issues but I read LoadLibraryExA and I can't see why this might be happening. I tried changing dwFlags, doesn't help. If I missed something obvious then I'm sorry.
I tried to boil down the problem to minimal sample code. It needs those two files and a *lib* directory with any DLL that would be loaded with *load_lib* global function.
I know that passing absolute path will make it work, but there is still problem when the library has some dependencies that are located in a different directory, those can't be find neither.
test.rb:
``` ruby
require 'devkit'
require 'mkmf'
create_makefile 'foobar'
`make`
require_relative 'foobar'
ENV['PATH'] = (Dir.pwd + '\lib;').gsub('/', '\\') + ENV['PATH']
load_lib('bz2.dll')
```
foobar.c:
``` c
#include "ruby.h"
VALUE rb_load_lib(VALUE self, VALUE path)
{
HMODULE mod;
printf("%s\n\n", getenv("PATH"));
mod = LoadLibraryExA(RSTRING_PTR(path), NULL, 0);
printf("LoadLibraryExA: %s\n", mod != 0 ? "SUCCESS" : "FAIL");
return Qnil;
}
void Init_foobar()
{
rb_define_global_function("load_lib", rb_load_lib, 1);
}
```
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