From: Amaury Forgeot d'Arc <amauryfa@gmail.com>
Date: Tue, 5 Feb 2008 00:26:21 +0000 (+0000)
Subject: Change r60575 broke test_compile:
X-Git-Tag: v2.6a1~272
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=99af7dbc07a8c7e52c081d2b9398ce61cf40215a;p=thirdparty%2FPython%2Fcpython.git

Change r60575 broke test_compile:
there is no need to emit co_lnotab item when both offsets are zeros.
---

diff --git a/Lib/test/test_trace.py b/Lib/test/test_trace.py
index 7f7db334ed06..6ad38d103ad9 100644
--- a/Lib/test/test_trace.py
+++ b/Lib/test/test_trace.py
@@ -366,6 +366,15 @@ class TraceTestCase(unittest.TestCase):
              (3, 'line'),
              (3, 'return')])
 
+    def test_16_blank_lines(self):
+        exec("def f():\n" + "\n" * 256 + "    pass")
+        self.run_and_compare(
+            f,
+            [(0, 'call'),
+             (257, 'line'),
+             (257, 'return')])
+
+
 class RaisingTraceFuncTestCase(unittest.TestCase):
     def trace(self, frame, event, arg):
         """A trace function that raises an exception in response to a
diff --git a/Python/compile.c b/Python/compile.c
index f9b5ac4a523c..83a8fc07cee2 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -3560,6 +3560,9 @@ assemble_lnotab(struct assembler *a, struct instr *i)
 	assert(d_bytecode >= 0);
 	assert(d_lineno >= 0);
 
+	if(d_bytecode == 0 && d_lineno == 0)
+		return 1;
+
 	if (d_bytecode > 255) {
 		int j, nbytes, ncodes = d_bytecode / 255;
 		nbytes = a->a_lnotab_off + 2 * ncodes;