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JIT: Fix missing untag of BSBinaryReg in do_get_tail #2177

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JIT: Fix missing untag of BSBinaryReg in do_get_tail #2177

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5 changes: 4 additions & 1 deletion libs/jit/src/jit.erl
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Original file line number Diff line number Diff line change
Expand Up @@ -3134,7 +3134,10 @@ do_get_tail(
) ->
MSt1 = cond_raise_badarg({BSOffsetReg, '&', 2#111, '!=', 0}, MMod, MSt0),
{MSt2, BSOffseBytesReg} = MMod:shift_right(MSt1, BSOffsetReg, 3),
{MSt3, TailBytesReg0} = MMod:get_array_element(MSt2, BSBinaryReg, 1),
% BSBinaryReg is a tagged binary term from the match state;
% untag it before using as a pointer for get_array_element
{MSt2b, BSBinaryPtrReg} = MMod:and_(MSt2, BSBinaryReg, ?TERM_PRIMARY_CLEAR_MASK),
{MSt3, TailBytesReg0} = MMod:get_array_element(MSt2b, {free, BSBinaryPtrReg}, 1),
MSt4 = MMod:sub(MSt3, TailBytesReg0, BSOffseBytesReg),
{MSt5, HeapSizeReg} = MMod:call_primitive(MSt4, ?PRIM_TERM_SUB_BINARY_HEAP_SIZE, [
BSBinaryReg, {free, TailBytesReg0}
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