diff -r 591473851c95 -r 3d80d425543b src/string.c
--- a/src/string.c	Tue Jan 02 17:00:21 2018 +0100
+++ b/src/string.c	Sun Jan 21 10:13:21 2018 +0100
@@ -269,14 +269,18 @@
         } else /* no match possible */ {
             *n = 1;
             sstr_t *result = (sstr_t*) almalloc(allocator, sizeof(sstr_t));
-            *result = sstrdup_a(allocator, s);
+            if(result) {
+                *result = sstrdup_a(allocator, s);
+            } else {
+                *n = -2;
+            }
             return result;
         }
     }
     
     ssize_t nmax = *n;
     size_t arrlen = 16;
-    sstr_t* result = (sstr_t*) almalloc(allocator, arrlen*sizeof(sstr_t));
+    sstr_t* result = (sstr_t*) alcalloc(allocator, arrlen, sizeof(sstr_t));
 
     if (result) {
         sstr_t curpos = s;
@@ -310,8 +314,12 @@
                     j++;
                     if (j > arrlen) {
                         arrlen *= 2;
-                        sstr_t* reallocated = (sstr_t*) alrealloc(
-                                allocator, result, arrlen*sizeof(sstr_t));
+                        size_t reallocsz;
+                        sstr_t* reallocated = NULL;
+                        if(!ucx_szmul(arrlen, sizeof(sstr_t), &reallocsz)) {
+                            reallocated = (sstr_t*) alrealloc(
+                                    allocator, result, reallocsz);
+                        }
                         if (reallocated) {
                             result = reallocated;
                         } else {