Fix how to reference to config.cuStateVec_enable (Qiskit#1749)

* Fix how to reference to config.cuStateVec_enable * Add a release note * Update fix-cuStateVec_enable-0936f2269466e3be.yaml --------- Co-authored-by: Hiroshi Horii <hhorii@users.noreply.github.com> Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
hhorii · Apr 7, 2023 · d4f4be2 · d4f4be2
1 parent c5a5679
commit d4f4be2
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diff --git a/releasenotes/notes/fix-cuStateVec_enable-0936f2269466e3be.yaml b/releasenotes/notes/fix-cuStateVec_enable-0936f2269466e3be.yaml
@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Fixed a build break to compile Qiskit Aer with cuQuautum support (`AER_ENABLE_CUQUANTUM=true`).
+    This change does not affect build for CPU and normal GPU binaries.
diff --git a/src/simulators/state_chunk.hpp b/src/simulators/state_chunk.hpp
@@ -474,7 +474,7 @@ void StateChunk<state_t>::set_config(const Config &config) {
 
 #ifdef AER_CUSTATEVEC
   // cuStateVec configs
-  if (config.cuStateVec_enable)
+  if (config.cuStateVec_enable.has_value())
     cuStateVec_enable_ = config.cuStateVec_enable.value();
 #endif
 }