1 files changed, 13 insertions, 4 deletions

diff --git a/src/solvers/coord/gendata.h b/src/solvers/coord/gendata.h
index 0acf9c0..a48263c 100644
--- a/src/solvers/coord/gendata.h
+++ b/src/solvers/coord/gendata.h
@@ -27,16 +27,25 @@ gendata_coord_dispatch(
         unsigned char *buf
 )
 {
+        size_t r;
         coord_t *coord;
         multicoord_t *mcoord;
 
         parse_coord_and_trans(coordstr, &coord, &mcoord, NULL);
 
-        if (coord != NULL)
-                return gendata_coord(coord, buf);
+        if (coord != NULL) {
+                if (bufsize < gendata_coord(coord, NULL))
+                        return NISSY_ERROR_BUFFER_SIZE;
+                r = gendata_coord(coord, buf);
+                return r == 0 ? NISSY_ERROR_UNKNOWN : (long long)r;
+        }
 
-        if (mcoord != NULL)
-                return gendata_multicoord(mcoord, buf);
+        if (mcoord != NULL) {
+                if (bufsize < gendata_multicoord(mcoord, NULL))
+                        return NISSY_ERROR_BUFFER_SIZE;
+                r = gendata_multicoord(mcoord, buf);
+                return r == 0 ? NISSY_ERROR_UNKNOWN : (long long)r;
+        }
 
         LOG("Error: could not parse coordinate '%s'\n", coordstr);
         return NISSY_ERROR_INVALID_SOLVER;