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Fix UB in BigInt left shift (saghul)

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Fabrice Bellard
2025-04-07 12:02:01 +02:00
parent fa706d5622
commit 083b7bab01
1 changed files with 1 additions and 1 deletions
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quickjs.c
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@@ -13857,7 +13857,7 @@ static no_inline __exception int js_binary_logic_slow(JSContext *ctx,
goto bigint_sar; goto bigint_sar;
} }
bigint_shl: bigint_shl:
vd = (js_sdlimb_t)v1 << v2; vd = (js_dlimb_t)v1 << v2;
if (likely(vd >= JS_SHORT_BIG_INT_MIN && if (likely(vd >= JS_SHORT_BIG_INT_MIN &&
vd <= JS_SHORT_BIG_INT_MAX)) { vd <= JS_SHORT_BIG_INT_MAX)) {
v = vd; v = vd;