kc3-lang/harfbuzz/src/check-static-inits.py

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• Hash : 628a9ee2
  Author :
  Date : 2025-04-06T02:15:51
  

  [check-static-inits] objdump all objects together
  
  We won't see which object has the bad initializers anymore.
  We can later adapt to objdump each object one by one if
  any error was found.
  
  Changes test runtime from 1s down to 0.15s.
  

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• src/check-static-inits.py

• #!/usr/bin/env python3
  
  import sys, os, shutil, subprocess, glob, re
  
  builddir = os.getenv ('builddir', os.path.dirname (__file__))
  libs = os.getenv ('libs', '.libs')
  
  objdump = os.getenv ('OBJDUMP', shutil.which ('objdump'))
  if not objdump:
  	print ('check-static-inits.py: \'ldd\' not found; skipping test')
  	sys.exit (77)
  
  if sys.version_info < (3, 5):
  	print ('check-static-inits.py: needs python 3.5 for recursive support in glob')
  	sys.exit (77)
  
  OBJS = glob.glob (os.path.join (builddir, libs, '**', '*hb*.o'), recursive=True)
  if not OBJS:
  	print ('check-static-inits.py: object files not found; skipping test')
  	sys.exit (77)
  
  stat = 0
  tested = 0
  
  result = subprocess.run(objdump.split () + ['-t'] + OBJS, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  
  if result.returncode:
      if result.stderr.find (b'not recognized') != -1:
          # https://github.com/harfbuzz/harfbuzz/issues/3019
          print ('objdump %s returned "not recognized", skipping')
      else:
          print ('objdump returned error:\n%s' % (result.stderr.decode ('utf-8')))
          stat = 2
  else:
      tested = 1
  
  result = result.stdout.decode ('utf-8')
  
  # Checking that no object file has static initializers
  for l in re.findall (r'^.*\.[cd]tors.*$', result, re.MULTILINE):
      if not re.match (r'.*\b0+\b', l):
          print ('Ouch, library has static initializers/finalizers')
          stat = 1
  
  # Checking that no object file has lazy static C++ constructors/destructors or other such stuff
  if ('__cxa_' in result) and ('__ubsan_handle' not in result):
      print ('Ouch, library has lazy static C++ constructors/destructors or other such stuff')
      stat = 1
  
  
  sys.exit (stat if tested else 77)
  

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