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diff --git a/src/qhull/geom2.c b/src/qhull/geom2.c
index bd58ce1..c4798d2 100644
--- a/src/qhull/geom2.c
+++ b/src/qhull/geom2.c
@@ -2080,7 +2080,7 @@ boolT qh_sharpnewfacets () {
pointT *qh_voronoi_center (int dim, setT *points) {
pointT *point, **pointp, *point0;
pointT *center= (pointT*)qh_memalloc (qh center_size);
- setT *simplex;
+ setT *simplex= NULL;
int i, j, k, size= qh_setsize(points);
coordT *gmcoord;
realT *diffp, sum2, *sum2row, *sum2p, det, factor;
diff --git a/src/qhull/io.c b/src/qhull/io.c
index 79ca799..41c18bc 100644
--- a/src/qhull/io.c
+++ b/src/qhull/io.c
@@ -3740,7 +3740,7 @@ coordT *qh_readpoints(int *numpoints, int *dimension, boolT *ismalloc) {
coordT *points, *coords, *infinity= NULL;
realT paraboloid, maxboloid= -REALmax, value;
realT *coordp= NULL, *offsetp= NULL, *normalp= NULL;
- char *s, *t, firstline[qh_MAXfirst+1];
+ char *s= NULL, *t, firstline[qh_MAXfirst+1];
int diminput=0, numinput=0, dimfeasible= 0, newnum, k, tempi;
int firsttext=0, firstshort=0, firstlong=0, firstpoint=0;
int tokcount= 0, linecount=0, maxcount, coordcount=0;
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