gdb/testsuite: use "is" to check against None

Fix flake8 warnings like:

    gdb/testsuite/gdb.base/pc-not-saved.py:55:18: E711 comparison to None should be 'if cond is None:'

Change-Id: Icb8bbe3ea444125c9d7ae63b7c1461045782b4b2
Approved-By: Tom Tromey <tom@tromey.com>

diff --git a/gdb/testsuite/gdb.base/pc-not-saved.py b/gdb/testsuite/gdb.base/pc-not-saved.py
index e08f3c452b529bd731f90ea7b2924e7f563dad97..4aa633f7440230a360c9513e62a57a06263f7dca 100644 (file)
--- a/gdb/testsuite/gdb.base/pc-not-saved.py
+++ b/gdb/testsuite/gdb.base/pc-not-saved.py
@@ -52,10 +52,10 @@ class break_unwinding(Unwinder):
             return None
 
         block = gdb.block_for_pc(pc)
-        if block == None:
+        if block is None:
             return None
         func = block.function
-        if func == None:
+        if func is None:
             return None
         if str(func) != "break_bt_here":
             return None

diff --git a/gdb/testsuite/gdb.python/py-disasm.py b/gdb/testsuite/gdb.python/py-disasm.py
index 5ebc51f652a64f161bfb9501f86b0f37e5b6d435..4c44de55a723eb5428d94e28dd36b3cd0520f925 100644 (file)
--- a/gdb/testsuite/gdb.python/py-disasm.py
+++ b/gdb/testsuite/gdb.python/py-disasm.py
@@ -64,7 +64,7 @@ class TestDisassembler(Disassembler):
     def __init__(self):
         super().__init__("TestDisassembler")
         self.__info = None
-        if current_pc == None:
+        if current_pc is None:
             raise gdb.GdbError("no current_pc set")
 
     def __call__(self, info):