compilers: drop dead code

no_warn_args is unused. Its only purpose was to implement automatic
hiding of UB in transpiled code, and it was not used at all in languages
other than C/C++ -- specifically when the C/C++ source files were
created by transpiling from vala or cython.

mesonbuild/compilers/compilers.py

@@ -1377,10 +1377,6 @@ def get_debug_args(self, is_debug: bool) -> T.List[str]:
  """Arguments required for a debug build."""
  return []
 
- def get_no_warn_args(self) -> T.List[str]:
- """Arguments to completely disable warnings."""
- return []
-
  def needs_static_linker(self) -> bool:
  raise NotImplementedError(f'There is no static linker for {self.language}')
 

mesonbuild/compilers/fortran.py

@@ -253,10 +253,6 @@ def __init__(self, exelist: T.List[str], version: str, for_machine: MachineChoic
  def get_module_outdir_args(self, path: str) -> T.List[str]:
  return ['-fmod=' + path]
 
- def get_no_warn_args(self) -> T.List[str]:
- # FIXME: Confirm that there's no compiler option to disable all warnings
- return []
-
 
 class SunFortranCompiler(FortranCompiler):
 

mesonbuild/compilers/java.py

@@ -52,9 +52,6 @@ def get_warn_args(self, level: str) -> T.List[str]:
  def get_werror_args(self) -> T.List[str]:
  return ['-Werror']
 
- def get_no_warn_args(self) -> T.List[str]:
- return ['-nowarn']
-
  def get_output_args(self, outputname: str) -> T.List[str]:
  if outputname == '':
  outputname = './'

mesonbuild/compilers/mixins/clike.py

@@ -177,10 +177,6 @@ def get_warn_args(self, level: str) -> T.List[str]:
  # TODO: this should be an enum
  return self.warn_args[level]
 
- def get_no_warn_args(self) -> T.List[str]:
- # Almost every compiler uses this for disabling warnings
- return ['-w']
-
  def get_depfile_suffix(self) -> str:
  return 'd'
 

mesonbuild/compilers/mixins/pgi.py

@@ -61,9 +61,6 @@ def __init__(self) -> None:
  def get_module_incdir_args(self) -> T.Tuple[str]:
  return ('-module', )
 
- def get_no_warn_args(self) -> T.List[str]:
- return ['-silent']
-
  def gen_import_library_args(self, implibname: str) -> T.List[str]:
  return []
 

mesonbuild/compilers/rust.py

@@ -213,9 +213,6 @@ def get_warn_args(self, level: str) -> T.List[str]:
  # TODO: I'm not really sure what to put here, Rustc doesn't have warning
  return self._WARNING_LEVELS[level]
 
- def get_no_warn_args(self) -> T.List[str]:
- return self._WARNING_LEVELS["0"]
-
  def get_pic_args(self) -> T.List[str]:
  # relocation-model=pic is rustc's default already.
  return []

mesonbuild/compilers/vala.py

@@ -66,9 +66,6 @@ def get_always_args(self) -> T.List[str]:
  def get_warn_args(self, level: str) -> T.List[str]:
  return []
 
- def get_no_warn_args(self) -> T.List[str]:
- return ['--disable-warnings']
-
  def get_werror_args(self) -> T.List[str]:
  return ['--fatal-warnings']