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authorMichael McConville <mmcco@mykolab.com>2016-02-01 10:41:32 +0000
committerNick Clifton <nickc@redhat.com>2016-02-01 10:41:32 +0000
commitd8c823c8b62b4f0fc4747eb9e4e29739add34c17 (patch)
treeec85efaa6d68150cac51b7712d4281b5363187ca /opcodes
parentb6471e6e2c88ae473453e3499d9cb6a607a3e068 (diff)
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Fix undefined compilation behaviour shifting a value into the sign bit of a signed integer.
* cgen-dis.c (count_decodable_bits): Use unsigned value for mask test bit.
Diffstat (limited to 'opcodes')
-rw-r--r--opcodes/ChangeLog5
-rw-r--r--opcodes/cgen-dis.c3
2 files changed, 7 insertions, 1 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 130a4a7..505b5e7 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,8 @@
+2016-02-01 Michael McConville <mmcco@mykolab.com>
+
+ * cgen-dis.c (count_decodable_bits): Use unsigned value for mask
+ test bit.
+
2016-01-25 Renlin Li <renlin.li@arm.com>
* arm-dis.c (mapping_symbol_for_insn): New function.
diff --git a/opcodes/cgen-dis.c b/opcodes/cgen-dis.c
index f9f7fb2..2d0f701 100644
--- a/opcodes/cgen-dis.c
+++ b/opcodes/cgen-dis.c
@@ -40,7 +40,8 @@ count_decodable_bits (const CGEN_INSN *insn)
{
unsigned mask = CGEN_INSN_BASE_MASK (insn);
int bits = 0;
- int m;
+ unsigned m;
+
for (m = 1; m != 0; m <<= 1)
{
if (mask & m)