bug#40737: Segfault in arm gcc7, thumb2 builroot, with arm patch

Andrew Gierth <[email protected]>
Newsgroups gmane.lisp.guile.bugs
Message-ID <[email protected]>
Patch attached.

-- 
Andrew.
guile-arm.patch (text/x-patch, 696 B)
diff --git a/libguile/lightening/lightening/arm-cpu.c b/libguile/lightening/lightening/arm-cpu.c
index 4445266af..2b4eecc29 100644
--- a/libguile/lightening/lightening/arm-cpu.c
+++ b/libguile/lightening/lightening/arm-cpu.c
@@ -230,7 +230,7 @@ encode_thumb_immediate(unsigned int v)
     return ((v & 0xff) | (1 << 12));
   /* abcdefgh 00000000 abcdefgh 00000000 */
   if (((v & 0xffff0000) >> 16) == (v & 0xffff) && (v & 0xff) == 0)
-    return ((v & 0x000000ff) | (2 << 12));
+    return (((v & 0x0000ff00) >> 8) | (2 << 12));
   /* abcdefgh abcdefgh abcdefgh abcdefgh */
   if ( (v &    0xff)        == ((v &     0xff00) >>  8) &&
        ((v &   0xff00) >> 8) == ((v &   0xff0000) >> 16) &&
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