call_math: prevent an endless loop
commitb8151682dbeb559851a02cb98d6fab70aaf74377
authorDan Carpenter <dan.carpenter@oracle.com>
Tue, 31 Oct 2017 11:08:20 +0000 (31 14:08 +0300)
committerDan Carpenter <dan.carpenter@oracle.com>
Tue, 31 Oct 2017 11:08:20 +0000 (31 14:08 +0300)
treedb6b0868b18322b246a21d7f6fde72decdd1e551
parente7b2600f8b40afbbca831a5b2d82b1b5e49f7bfe
call_math: prevent an endless loop

The problem is if an expression is assigned to itself then we hit an
endless loop.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
smatch_parse_call_math.c