https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199943
Bug ID: 199943
Summary: document guarantee provided by dl_iterate_phdr(3)
callback order
Product: Base System
Version: 11.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: misc
Assignee: [email protected]
Reporter: [email protected]
A number of posts found on e.g. http://stackoverflow.com/ and elsewhere ask
about the order of objects returned by dl_iterate_phdr. Those questions are
typically targeted at Linux, but the question is equally applicable to FreeBSD.
The question usually arises from a desire to know which is the main executable.
In practice the executable is passed to the first callback invocation, but
there is currently no guarantee that this will not change. We should choose
one of:
1) Document this and add a test so that it remains the case
2) Caution that the order of objects is not guaranteed, and consumers should
not rely on a particular order
Equivalent issue for Linux (but probably not in the correct bug tracker):
https://bugzilla.kernel.org/show_bug.cgi?id=94141
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