Fix blind exceptions

mesonbuild/ast/introspection.py

@@ -122,7 +122,7 @@ class IntrospectionInterpreter(AstInterpreter):
             subi.analyze()
             subi.project_data['name'] = dirname
             self.project_data['subprojects'] += [subi.project_data]
-        except:
+        except (mesonlib.MesonException, RuntimeError):
             return
 
     def func_add_languages(self, node, args, kwargs):

mesonbuild/compilers/c.py

@@ -1036,7 +1036,7 @@ class CCompiler(Compiler):
                 elf_class = 2
             else:
                 elf_class = 1
-        except:
+        except (MesonException, KeyError): # TODO evaluate if catching KeyError is wanted here
             elf_class = 0
         # Search in the specified dirs, and then in the system libraries
         for d in itertools.chain(extra_dirs, self.get_library_dirs(env, elf_class)):

mesonbuild/dependencies/base.py

@@ -1107,7 +1107,7 @@ class CMakeDependency(ExternalDependency):
             for l in lexer1:
                 if l.func == 'set':
                     self._cmake_set(l)
-        except:
+        except MesonException:
             return None
 
         # Extract the variables and sanity check them

mesonbuild/minstall.py

@@ -93,7 +93,7 @@ def set_chown(path, user=None, group=None, dir_fd=None, follow_symlinks=True):
                                                  dir_fd=dir_fd,
                                                  follow_symlinks=follow_symlinks)
         shutil.chown(path, user, group)
-    except:
+    except Exception:
         raise
     finally:
         os.chown = real_os_chown

mesonbuild/scripts/depfixer.py

@@ -123,7 +123,7 @@ class Elf(DataSizes):
             self.parse_header()
             self.parse_sections()
             self.parse_dynamic()
-        except:
+        except (struct.error, RuntimeError):
             self.bf.close()
             raise
 

mesonbuild/wrap/wrap.py

@@ -84,7 +84,7 @@ class PackageDefinition:
         try:
             self.config = configparser.ConfigParser(interpolation=None)
             self.config.read(fname)
-        except:
+        except configparser.Error:
             raise WrapException('Failed to parse {}'.format(self.basename))
         if len(self.config.sections()) < 1:
             raise WrapException('Missing sections in {}'.format(self.basename))

run_project_tests.py

@@ -774,7 +774,7 @@ def detect_system_compiler():
             try:
                 comp = env.compiler_from_language(lang, env.is_cross_build())
                 details = '%s %s' % (' '.join(comp.get_exelist()), comp.get_version_string())
-            except:
+            except mesonlib.MesonException:
                 comp = None
                 details = 'not found'
             print('%-7s: %s' % (lang, details))

run_unittests.py

@@ -1244,7 +1244,7 @@ class BasePlatformTests(unittest.TestCase):
                     print('Stderr:\n')
                     print(err)
                     raise RuntimeError('Configure failed')
-            except:
+            except Exception:
                 self._print_meson_log()
                 raise
             finally:
@@ -1257,7 +1257,7 @@ class BasePlatformTests(unittest.TestCase):
                 out = self._run(self.setup_command + args + extra_args)
             except unittest.SkipTest:
                 raise unittest.SkipTest('Project requested skipping: ' + srcdir)
-            except:
+            except Exception:
                 self._print_meson_log()
                 raise
         return out
@@ -4443,7 +4443,7 @@ class LinuxlikeTests(BasePlatformTests):
                 self.assertIn(cmd_std, cmd)
             try:
                 self.build()
-            except:
+            except Exception:
                 print('{} was {!r}'.format(lang_std, v))
                 raise
             self.wipe()

sideci.yml

@@ -1,3 +1,5 @@
 linter:
   flake8:
     version: 3
+    plugins:
+      - flake8-blind-except