X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flanguage%2Fstats%2Ffrequencies.c;fp=src%2Flanguage%2Fstats%2Ffrequencies.c;h=3f7afaa361801e468879dd5e246ce4a6d6bb9c80;hb=298861c031f75037ec8d63d4d1dd39450ee574e8;hp=a851c2196073a4ba1d3b530f70c686aca323e19f;hpb=ef8332fdf3f7929bbc3494eaddee370474c73630;p=pspp

diff --git a/src/language/stats/frequencies.c b/src/language/stats/frequencies.c
index a851c21960..3f7afaa361 100644
--- a/src/language/stats/frequencies.c
+++ b/src/language/stats/frequencies.c
@@ -359,7 +359,8 @@ calc_percentiles (const struct frq_proc *frq, struct var_freqs *vf)
   if (!frq->n_percentiles)
     return;
 
-  vf->percentiles = xnmalloc (frq->n_percentiles, sizeof *vf->percentiles);
+  if (!vf->percentiles)
+    vf->percentiles = xnmalloc (frq->n_percentiles, sizeof *vf->percentiles);
 
   const struct freq_tab *ft = &vf->tab;
   const double W = ft->valid_cases;