https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79530
Bug ID: 79530
Summary: GCC segfault when calling weakref+alias functions
within __transaction_atomic block
Product: gcc
Version: 6.3.1
Status: UNCONFIRMED
Keywords: trans-mem
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: tdz at users dot sourceforge.net
Target Milestone: ---
Created attachment 40748
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40748&action=edit
Test case (simply run 'make')
GCC version: gcc (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1)
Linux system: Fedora 24 (x86_64)
STR:
- call a weakref'ed function alias (__attribute__((weakref, alias(...))))
from within __transaction_atomic{}
Expected result:
- GCC should generate a call to the target function
Actual result:
- GCC quits with a segmentation fault:
> main.c: In function 'main':
> main.c:23:1: internal compiler error: Segmentation fault
> }
> ^
The attached test case builds and runs if the __transaction_atomic statement
has been removed. The target symbol has to be in a separate object file to
trigger the bug.
