1  #!/usr/bin/env python3
       2  
       3  import sys, os, shutil, subprocess, glob, re
       4  
       5  builddir = os.getenv ('builddir', os.path.dirname (__file__))
       6  libs = os.getenv ('libs', '.libs')
       7  
       8  objdump = os.getenv ('OBJDUMP', shutil.which ('objdump'))
       9  if not objdump:
      10  	print ('check-static-inits.py: \'ldd\' not found; skipping test')
      11  	sys.exit (77)
      12  
      13  if sys.version_info < (3, 5):
      14  	print ('check-static-inits.py: needs python 3.5 for recursive support in glob')
      15  	sys.exit (77)
      16  
      17  OBJS = glob.glob (os.path.join (builddir, libs, '**', '*hb*.o'), recursive=True)
      18  if not OBJS:
      19  	print ('check-static-inits.py: object files not found; skipping test')
      20  	sys.exit (77)
      21  
      22  stat = 0
      23  tested = 0
      24  
      25  for obj in OBJS:
      26  	result = subprocess.run(objdump.split () + ['-t', obj], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
      27  
      28  	if result.returncode:
      29  		if result.stderr.find (b'not recognized') != -1:
      30  			# https://github.com/harfbuzz/harfbuzz/issues/3019
      31  			print ('objdump %s returned "not recognized", skipping' % obj)
      32  			continue
      33  		print ('objdump %s returned error:\n%s' % (obj, result.stderr.decode ('utf-8')))
      34  		stat = 2
      35  
      36  	result = result.stdout.decode ('utf-8')
      37  
      38  	# Checking that no object file has static initializers
      39  	for l in re.findall (r'^.*\.[cd]tors.*$', result, re.MULTILINE):
      40  		if not re.match (r'.*\b0+\b', l):
      41  			print ('Ouch, %s has static initializers/finalizers' % obj)
      42  			stat = 1
      43  
      44  	# Checking that no object file has lazy static C++ constructors/destructors or other such stuff
      45  	if ('__cxa_' in result) and ('__ubsan_handle' not in result):
      46  		print ('Ouch, %s has lazy static C++ constructors/destructors or other such stuff' % obj)
      47  		stat = 1
      48  
      49  	tested += 1
      50  
      51  sys.exit (stat if tested else 77)