The computation is documented as unused in this case,
but triggers an ubsan error:
../accel/tcg/ldst_atomicity.c.inc:837:33: runtime error: shift exponent -32 is negative
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior ../accel/tcg/ldst_atomicity.c.inc:837:33 in
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <
20230606171629.98157-1-richard.henderson@linaro.org>
}
store_atom_insert_al16(pv - o, v, m);
- /* Unused if sz <= 64. */
+ if (sz <= 64) {
+ return 0;
+ }
return int128_gethi(val_le) >> (sz - 64);
}