From: Nadav Har'El <n...@scylladb.com>
Committer: Nadav Har'El <n...@scylladb.com>
Branch: master
hyperv: comment out two unused variables that crash gcc 12.1.1
In hyperv.cc we have two static (i.e., file-local) variables which are
only ever set, never read, in this file, so they are unneeded. It turns
out that gcc 12.1.1 crashes because of these variables (segmentation
fault).
I opened a gcc bug on this:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106087
But since these variables aren't needed anyway (they are never read by
any code after being set), let's fix the build by just removing (#if 0)
them.
Signed-off-by: Nadav Har'El <n...@scylladb.com>
---
diff --git a/bsd/sys/dev/hyperv/vmbus/hyperv.cc
b/bsd/sys/dev/hyperv/vmbus/hyperv.cc
--- a/bsd/sys/dev/hyperv/vmbus/hyperv.cc
+++ b/bsd/sys/dev/hyperv/vmbus/hyperv.cc
@@ -62,8 +62,10 @@ static void hypercall_memfree();
u_int hyperv_features;
u_int hyperv_recommends;
+#if 0
static u_int hyperv_pm_features;
static u_int hyperv_features3;
+#endif
hyperv_tc64_t hyperv_tc64;
@@ -135,8 +137,10 @@ hyperv_identify()
return (false);
}
hyperv_features = regs.a;
+#if 0
hyperv_pm_features = regs.c;
hyperv_features3 = regs.d;
+#endif
regs = processor::cpuid(CPUID_LEAF_HV_RECOMMENDS);
hyperv_recommends = regs.a;
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