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-rw-r--r--src/param.cpp3
-rw-r--r--src/param.h2
2 files changed, 3 insertions, 2 deletions
diff --git a/src/param.cpp b/src/param.cpp
index c5f60c6..f96e9c3 100644
--- a/src/param.cpp
+++ b/src/param.cpp
@@ -107,7 +107,8 @@ PARAM::PARAM(void)
       time_UtZ(0.0), time_opt(0.0), time_Omega(0.0) {}
 
 PARAM::~PARAM() {
-  gsl_rng_free(gsl_r);
+  if (gsl_r)
+    gsl_rng_free(gsl_r);
 }
 
 // Read files: obtain ns_total, ng_total, ns_test, ni_test.
diff --git a/src/param.h b/src/param.h
index eb2cef7..e747182 100644
--- a/src/param.h
+++ b/src/param.h
@@ -213,7 +213,7 @@ public:
   size_t n_mh;         // # MH steps in each iter.
   double geo_mean;     // Mean of geometric dist.
   long int randseed;   // holds -seed parameter
-  gsl_rng *gsl_r;      // Track the randomizer
+  gsl_rng *gsl_r = NULL;      // Track the randomizer
   double trace_G;
 
   HYPBSLMM cHyp_initial;