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From: "keno at juliacomputing dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/29446] New: __dlopen now ignores dl_caller argument
Date: Thu, 04 Aug 2022 04:43:20 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29446

            Bug ID: 29446
           Summary: __dlopen now ignores dl_caller argument
           Product: glibc
           Version: 2.34
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: dynamic-link
          Assignee: unassigned at sourceware dot org
          Reporter: keno at juliacomputing dot com
  Target Milestone: ---

In commit 0c1c3a77 ("dlfcn: Move dlopen into libc"),
the previous __dlopen symbol was renamed dlopen_implementation,
and moved into libc. After this commit, __dlopen is now:
```
void *
__dlopen (const char *file, int mode, void *dl_caller)
{
  return dlopen_implementation (file, mode, RETURN_ADDRESS (0));
}
```
This seems like it may be a bug, because the `dl_caller`
argument to `__dlopen` is now ignored. I don't have a concrete
case where this causes any problems, this was just noticed by
inspection, but it looked wrong.

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