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tcg: Fix info_in_idx increment in layout_arg_by_ref

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Off by one error, failing to take into account that layout_arg_1
already incremented info_in_idx for the first piece.  We only
need care for the n-1 TCG_CALL_ARG_BY_REF_N pieces here.

Cc: qemu-stable@nongnu.org
Fixes: 313bdea84d ("tcg: Add TCG_CALL_{RET,ARG}_BY_REF")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1751
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson
2023-07-15 08:02:32 +01:00
parent cb62bd15e1
commit e18ed26ce7
1 changed files with 1 additions and 1 deletions
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tcg/tcg.c
+1 -1
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@@ -1083,7 +1083,7 @@ static void layout_arg_by_ref(TCGCumulativeArgs *cum, TCGHelperInfo *info)
.ref_slot = cum->ref_slot + i,
};
}
cum->info_in_idx += n;
cum->info_in_idx += n - 1; /* i=0 accounted for in layout_arg_1 */
cum->ref_slot += n;
}