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r249595 - in /trunk: gcc/go/gofrontend/MERGE li...
- From: ian at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Fri, 23 Jun 2017 16:05:44 -0000
- Subject: r249595 - in /trunk: gcc/go/gofrontend/MERGE li...
Author: ian
Date: Fri Jun 23 16:05:44 2017
New Revision: 249595
URL: https://gcc.gnu.org/viewcvs?rev=249595&root=gcc&view=rev
Log:
runtime: don't crash if no p in kickoff
The kickoff function for g0 can be invoked without a p, for example
from mcall(exitsyscall0) in exitsyscall after exitsyscall has cleared
the p field. The assignment gp.param = nil will invoke a write barrier.
If gp.param is not already nil, this will require a p. Avoid the problem
for a specific case that is known to be OK: when the value in gp.param
is a *g.
Reviewed-on: https://go-review.googlesource.com/46512
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/runtime/proc.go