diff --git a/libc/src/stdlib/qsort.cpp b/libc/src/stdlib/qsort.cpp
--- a/libc/src/stdlib/qsort.cpp
+++ b/libc/src/stdlib/qsort.cpp
@@ -42,6 +42,10 @@
   }
 
   int elem_compare(size_t i, const uint8_t *other) const {
+    // An element must compare equal to itself so we don't need to consult the
+    // user provided comparator.
+    if (get(i) == other)
+      return 0;
     return compare(get(i), other);
   }