Fix issue #324: u/l constant integer suffix (#326)

1 files changed, 21 insertions, 1 deletions

diff --git a/pycparser/c_parser.py b/pycparser/c_parser.py
index 4e1889d..a32d0cc 100644
--- a/pycparser/c_parser.py
+++ b/pycparser/c_parser.py
@@ -1766,8 +1766,28 @@ class CParser(PLYParser):
                         | INT_CONST_HEX
                         | INT_CONST_BIN
         """
+        uCount = 0
+        lCount = 0
+        for x in p[1][-3:]:
+            if x in ('l', 'L'):
+                lCount += 1
+            elif x in ('u', 'U'):
+                uCount += 1
+        t = ''
+        if uCount > 1:
+             raise ValueError('Constant cannot have more than one u/U suffix.')
+        elif lCount > 2:
+             raise ValueError('Constant cannot have more than two l/L suffix.')
+        else:
+            if uCount:
+                t += 'unsigned '
+            if lCount == 1:
+                t += 'long '
+            elif lCount == 2:
+                t += 'long long '
+            t += 'int'
         p[0] = c_ast.Constant(
-            'int', p[1], self._token_coord(p, 1))
+            t, p[1], self._token_coord(p, 1))
 
     def p_constant_2(self, p):
         """ constant    : FLOAT_CONST