Mesa (master): nv50/ir: fix crash in isUniform for undefined values

[GitLab Mirror]

Module: Mesa
Branch: master
Commit: 538d2c33b86dd9e66a6e900ac8e1cda10a5bfc4d
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=538d2c33b86dd9e66a6e900ac8e1cda10a5bfc4d

Author: Karol Herbst <kherbst at redhat.com>
Date:   Sun Nov  3 00:57:28 2019 +0100

nv50/ir: fix crash in isUniform for undefined values

Signed-off-by: Karol Herbst <kherbst at redhat.com>
Reviewed-by: Ilia Mirkin <imirkin at alum.mit.edu>

---

 src/gallium/drivers/nouveau/codegen/nv50_ir.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir.cpp
index a181a13a3b1..ae07d967221 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir.cpp
@@ -274,6 +274,8 @@ LValue::isUniform() const
    if (defs.size() > 1)
       return false;
    Instruction *insn = getInsn();
+   if (!insn)
+      return false;
    // let's not try too hard here for now ...
    return !insn->srcExists(1) && insn->getSrc(0)->isUniform();
 }