fix #407 add support for u/U suffix in integer constants (eg. 0xABu, or 0xCDU).

2 files changed, 9 insertions, 0 deletions

diff --git a/cffi/cparser.py b/cffi/cparser.py
index df6303d..474f756 100644
--- a/cffi/cparser.py
+++ b/cffi/cparser.py
@@ -819,6 +819,8 @@ class Parser(object):
             s = exprnode.value
             if s.startswith('0'):
                 if s.startswith('0x') or s.startswith('0X'):
+                    if s.endswith('u') or s.endswith('U'):
+                        s = s[:-1]
                     return int(s, 16)
                 return int(s, 8)
             elif '1' <= s[0] <= '9':
diff --git a/testing/cffi0/test_parsing.py b/testing/cffi0/test_parsing.py
index 2d75850..c06c4b6 100644
--- a/testing/cffi0/test_parsing.py
+++ b/testing/cffi0/test_parsing.py
@@ -466,3 +466,10 @@ def test_error_invalid_syntax_for_cdef():
     e = py.test.raises(CDefError, ffi.cdef, 'void foo(void) {}')
     assert str(e.value) == ('<cdef source string>:1: unexpected <FuncDef>: '
                             'this construct is valid C but not valid in cdef()')
+
+def test_unsigned_int_suffix_for_constant():
+    ffi = FFI()
+    ffi.cdef("""enum e {
+                    enumerator_0=0x00,
+                    enumerator_1=0x01u,
+                    enumerator_1=0x01U};""")