diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp
index 500ab8915de7f3f222ace12c2fc4b096253fae50..1b595aec364c9e458592b1b1a12ae49e893fe0b8 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp
@@ -1327,7 +1327,11 @@ GCRA::simplify()
                bestScore = score;
             }
          }
+#if __cplusplus >= 201103L
+         if (std::isinf(bestScore)) {
+#else
          if (isinf(bestScore)) {
+#endif
             ERROR("no viable spill candidates left\n");
             break;
          }