https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66173
Bug ID: 66173
Summary: -fno-threadsafe-statics suppresses guard functions but
not guard variables
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: eleventen at gmail dot com
Target Milestone: ---
Created attachment 35553
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35553&action=edit
Source file demonstrating that the guard variable isn't suppressed.
The use of the -fno-threadsafe-statics eliminates the function references to
the guard functions,
__cxa_guard_acquire
__cxa_guard_release
but it doesn't eliminate the variables used to guard the initialization. A
compiled version of the attached file using the g++ command line therein
generated no references to the guard functions, but the guard variable remains.
# nm -C guard | grep guard
0000000000600a88 b guard variable for f()::a
