https://bugs.freedesktop.org/show_bug.cgi?id=91869
Bug ID: 91869
Summary: [PATCH] ralloc: atexit(3) handlers used in dlopened
libraries
Product: Mesa
Version: 10.6
Hardware: Other
OS: FreeBSD
Status: NEW
Severity: normal
Priority: medium
Component: Other
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Created attachment 118072
--> https://bugs.freedesktop.org/attachment.cgi?id=118072&action=edit
Patch to use __attribute__((destructor)) in ralloc.c
Hi!
On Linux, atexit(3) handlers are called when the program exits but also when a
library is unloaded. The latter behavior is a Glibc extension.
On systems where this extension is not supported, this causes an application to
crash when, for instance, a library using ralloc is dlclosed: at program exit,
the registered function is no longer in memory. For example, this happens with
OpenCL applications using an ICD loader on FreeBSD.
__attribute__((destructor)) fixes the problem because such handlers are called
when a library is unloaded and when the program exits.
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