From: Philippe Mathieu-Daudé <f4bug@amsat.org>

Reproduced with "scripts/decodetree.py /dev/null".

Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 scripts/decodetree.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/decodetree.py b/scripts/decodetree.py
index ba203aeccd..fb9a0ab3ad 100755
--- a/scripts/decodetree.py
+++ b/scripts/decodetree.py
@@ -784,7 +784,7 @@ class Tree:
 
 def build_tree(pats, outerbits, outermask):
     # Find the intersection of all remaining fixedmask.
-    innermask = ~outermask
+    innermask = ~outermask & insnmask
     for i in pats:
         innermask &= i.fixedmask
 
-- 
2.17.2

On 2/24/19 12:29 AM, Richard Henderson wrote:
> From: Philippe Mathieu-Daudé <f4bug@amsat.org>
>
> Reproduced with "scripts/decodetree.py /dev/null".
>
> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>   scripts/decodetree.py | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>

Cheers,

Bastian