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Skip the CAS on new_pos < 0

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Jōshin 2024-01-12 10:25:35 -05:00
parent fd75fd1467
commit 12b557abe1
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1 changed files with 3 additions and 3 deletions
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6
libc/runtime/zipos-seek.c
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@ -66,8 +66,8 @@ Restart:
default: default:
new_pos = einval(); new_pos = einval();
} }
} while (!LIKELY(atomic_compare_exchange_weak_explicit( } while (new_pos >= 0 && !LIKELY(atomic_compare_exchange_weak_explicit(
&h->pos, &pos, new_pos < 0 ? pos : new_pos, memory_order_release, &h->pos, &pos, new_pos, memory_order_release,
memory_order_relaxed))); memory_order_relaxed)));
return new_pos; return new_pos;
} }