reset prev_prefix at the entry of cs_disasm_ex(). this fixes a nasty segfault bug
diff --git a/cs.c b/cs.c
index c2ed6bd..12af4ae 100644
--- a/cs.c
+++ b/cs.c
@@ -309,6 +309,9 @@
handle->errnum = CS_ERR_OK;
+ // reset previous prefix for X86
+ handle->prev_prefix = 0;
+
memset(insn_cache, 0, sizeof(insn_cache));
while (size > 0) {
diff --git a/suite/benchmark.py b/suite/benchmark.py
index cc7e464..bf564f2 100755
--- a/suite/benchmark.py
+++ b/suite/benchmark.py
@@ -36,6 +36,10 @@
)
+# for debugging
+def to_hex(s):
+ return " ".join("0x" + "{0:x}".format(ord(c)).zfill(2) for c in s) # <-- Python 3 is OK
+
def get_code(f, size):
code = f.read(size)
if len(code) != size: # reached end-of-file?
@@ -77,12 +81,16 @@
cfile.seek(0)
for i in xrange(3):
code = get_code(cfile, 128)
+ #print to_hex(code)
+ #print
cs(md, code)
# start real benchmark
c_t = 0
for i in xrange(50000):
code = get_code(cfile, 128)
+ #print to_hex(code)
+ #print
t1 = time()
cs(md, code)