remove more except: lines

waflib/Node.py

@@ -196,12 +196,12 @@ class Node(object):
 				shutil.rmtree(self.abspath())
 			else:
 				os.unlink(self.abspath())
-		except:
+		except OSError:
 			pass
 
 		try:
 			delattr(self, 'children')
-		except:
+		except AttributeError:
 			pass
 
 	def suffix(self):
@@ -234,7 +234,7 @@ class Node(object):
 
 		try:
 			self.parent.mkdir()
-		except:
+		except OSError:
 			pass
 
 		if self.name:
@@ -248,7 +248,7 @@ class Node(object):
 
 			try:
 				self.children
-			except:
+			except AttributeError:
 				self.children = {}
 
 		self.cache_isdir = True
@@ -271,17 +271,21 @@ class Node(object):
 				continue
 
 			try:
-				if x in cur.children:
+				ch = cur.children
+			except AttributeError:
+				cur.children = {}
+			else:
+				try:
 					cur = cur.children[x]
 					continue
-			except:
-				cur.children = {}
+				except KeyError:
+					pass
 
 			# optimistic: create the node first then look if it was correct to do so
 			cur = self.__class__(x, cur)
 			try:
 				os.stat(cur.abspath())
-			except:
+			except OSError:
 				del cur.parent.children[x]
 				return None
 
@@ -289,7 +293,7 @@ class Node(object):
 
 		try:
 			os.stat(ret.abspath())
-		except:
+		except OSError:
 			del ret.parent.children[ret.name]
 			return None
 
@@ -338,15 +342,15 @@ class Node(object):
 			lst = [x for x in split_path(lst) if x and x != '.']
 
 		cur = self
-		try:
-			for x in lst:
-				if x == '..':
-					cur = cur.parent or cur
-				else:
+		for x in lst:
+			if x == '..':
+				cur = cur.parent or cur
+			else:
+				try:
 					cur = cur.children[x]
-			return cur
-		except:
-			pass
+				except (AttributeError, KeyError):
+					return None
+		return cur
 
 	def path_from(self, node):
 		"""
@@ -398,7 +402,7 @@ class Node(object):
 		"""
 		try:
 			return self.cache_abspath
-		except:
+		except AttributeError:
 			pass
 		# think twice before touching this (performance + complexity + correctness)
 
@@ -460,11 +464,12 @@ class Node(object):
 
 		try:
 			lst = set(self.children.keys())
+		except AttributeError:
+			self.children = {}
+		else:
 			if remove:
 				for x in lst - set(dircont):
 					del self.children[x]
-		except:
-			self.children = {}
 
 		for name in dircont:
 			npats = accept(name, pats)
@@ -677,12 +682,8 @@ class Node(object):
 		if not node:
 			self = self.get_src()
 			node = self.find_node(lst)
-		try:
-			pat = node.abspath()
-			if os.path.isdir(pat):
-				return None
-		except:
-			pass
+		if os.path.isdir(node.abspath()):
+			return None
 		return node
 
 	def find_or_declare(self, lst):
@@ -704,7 +705,7 @@ class Node(object):
 				node.sig = None
 				try:
 					node.parent.mkdir()
-				except:
+				except OSError:
 					pass
 			return node
 		self = self.get_src()
@@ -714,7 +715,7 @@ class Node(object):
 				node.sig = None
 				try:
 					node.parent.mkdir()
-				except:
+				except OSError:
 					pass
 			return node
 		node = self.get_bld().make_node(lst)

waflib/Runner.py

@@ -10,7 +10,7 @@ Runner.py: Task scheduling and execution
 import random, atexit
 try:
 	from queue import Queue
-except:
+except ImportError:
 	from Queue import Queue
 from waflib import Utils, Task, Errors, Logs
 
@@ -40,7 +40,7 @@ class TaskConsumer(Utils.threading.Thread):
 		"""
 		try:
 			self.loop()
-		except:
+		except Exception:
 			pass
 
 	def loop(self):
@@ -70,7 +70,7 @@ def get_pool():
 	"""
 	try:
 		return pool.get(False)
-	except:
+	except Exception:
 		return TaskConsumer()
 
 def put_pool(x):
@@ -176,7 +176,7 @@ class Parallel(object):
 			elif self.frozen:
 				try:
 					cond = self.deadlock == self.processed
-				except:
+				except AttributeError:
 					pass
 				else:
 					if cond:
@@ -268,7 +268,7 @@ class Parallel(object):
 			self.out.put(self)
 		try:
 			pool = self.pool
-		except:
+		except AttributeError:
 			pass
 		else:
 			for x in pool:

waflib/Task.py

@@ -230,7 +230,7 @@ class TaskBase(evil):
 		# in case of failure the task will be executed again
 		try:
 			del self.generator.bld.task_sigs[self.uid()]
-		except:
+		except KeyError:
 			pass
 
 		try:
@@ -707,7 +707,7 @@ class Task(TaskBase):
 			try:
 				if prev == self.compute_sig_implicit_deps():
 					return prev
-			except:
+			except Exception:
 				# when a file was renamed (IOError usually), remove the stale nodes (headers in folders without source files)
 				# this will break the order calculation for headers created during the build in the source directory (should be uncommon)
 				# the behaviour will differ when top != out
@@ -715,10 +715,10 @@ class Task(TaskBase):
 					if x.is_child_of(bld.srcnode):
 						try:
 							os.stat(x.abspath())
-						except:
+						except OSErrror:
 							try:
 								del x.parent.children[x.name]
-							except:
+							except KeyError:
 								pass
 			del bld.task_sigs[(key, 'imp')]
 			raise Errors.TaskRescan('rescan')
@@ -738,12 +738,12 @@ class Task(TaskBase):
 		# recompute the signature and return it
 		try:
 			bld.task_sigs[(key, 'imp')] = sig = self.compute_sig_implicit_deps()
-		except:
+		except Exception:
 			if Logs.verbose:
 				for k in bld.node_deps.get(self.uid(), []):
 					try:
 						k.get_bld_sig()
-					except:
+					except Exception:
 						Logs.warn('Missing signature for node %r (may cause rebuilds)' % k)
 		else:
 			return sig
@@ -780,7 +780,7 @@ class Task(TaskBase):
 		bld = self.generator.bld
 		try:
 			cache = bld.dct_implicit_nodes
-		except:
+		except AttributeError:
 			bld.dct_implicit_nodes = cache = {}
 
 		try:
@@ -878,7 +878,7 @@ class Task(TaskBase):
 
 		try:
 			shutil.rmtree(dname)
-		except:
+		except Exception:
 			pass
 
 		try:
@@ -888,7 +888,7 @@ class Task(TaskBase):
 		except (OSError, IOError):
 			try:
 				shutil.rmtree(tmpdir)
-			except:
+			except Exception:
 				pass
 		else:
 			try:
@@ -896,12 +896,12 @@ class Task(TaskBase):
 			except OSError:
 				try:
 					shutil.rmtree(tmpdir)
-				except:
+				except Exception:
 					pass
 			else:
 				try:
 					os.chmod(dname, Utils.O755)
-				except:
+				except Exception:
 					pass
 
 def is_before(t1, t2):

waflib/Tools/c_config.py

@@ -1127,6 +1127,9 @@ class cfgtask(Task.TaskBase):
 	def runnable_status(self):
 		return Task.RUN_ME
 
+	def uid(self):
+		return Utils.SIG_NIL
+
 	def run(self):
 		conf = self.conf
 		bld = Build.BuildContext(top_dir=conf.srcnode.abspath(), out_dir=conf.bldnode.abspath())
@@ -1152,6 +1155,7 @@ def multicheck(self, *k, **kw):
 			self.cache_global = Options.cache_global
 			self.nocache = Options.options.nocache
 			self.returned_tasks = []
+			self.task_sigs = {}
 		def total(self):
 			return len(tasks)
 		def to_log(self, *k, **kw):