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-rw-r--r--src/stdlib/qsort.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/stdlib/qsort.c b/src/stdlib/qsort.c
index 866af0ec..434d9350 100644
--- a/src/stdlib/qsort.c
+++ b/src/stdlib/qsort.c
@@ -155,12 +155,16 @@ void qsort(void *base, size_t nel, size_t width, cmpfun cmp)
{
size_t lp[12*sizeof(size_t)];
size_t i, size = width * nel;
- unsigned char *head = base,
- *high = head + size - width;
+ unsigned char *head, *high;
size_t p[2] = {1, 0};
int pshift = 1;
int trail;
+ if (!size) return;
+
+ head = base;
+ high = head + size - width;
+
/* Precompute Leonardo numbers, scaled by element width */
for(lp[0]=lp[1]=width, i=2; (lp[i]=lp[i-2]+lp[i-1]+width) < size; i++);