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don't compare elements with themselves during qsort.

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this is actually a workaround for a bug in gcc, whereby it asserts
inequality of the keys being compared...
This commit is contained in:
Rich Felker 2011-02-17 00:03:24 -05:00
parent 798a12ecc4
commit b24bc15f5c
1 changed files with 1 additions and 1 deletions
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2
src/stdlib/qsort.c
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@ -28,7 +28,7 @@ static void sift(char *base, size_t root, size_t nel, size_t width, int (*cmp)(c
max = 2*root;
if (max < nel && cmp(base+max*width, base+(max+1)*width) < 0)
max++;
if (cmp(base+root*width, base+max*width) < 0) {
if (max && cmp(base+root*width, base+max*width) < 0) {
swap(base+root*width, base+max*width, width);
root = max;
} else break;