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#!/usr/bin/python3
# Copyright 2013 The Emscripten Authors. All rights reserved.
# Emscripten is available under two separate licenses, the MIT license and the
# University of Illinois/NCSA Open Source License. Both these licenses can be
# found in the LICENSE file.
"""Usage: creduce ./creduce_tester.py newfail1.c
"""
import os
import sys
from subprocess import Popen, PIPE
sys.path += [os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))), 'tools')]
import shared
# creduce will only pass the filename of the C file as the first arg, so other
# configuration options will have to be hardcoded.
CSMITH_CFLAGS = ['-I', os.path.join(os.environ['CSMITH_PATH'], 'runtime')]
EMCC_ARGS = ['-O2']
filename = sys.argv[1]
obj_filename = shared.unsuffixed(filename)
js_filename = obj_filename + '.js'
print('testing file', filename)
try:
print('2) Compile natively')
shared.run_process([shared.CLANG_CC, '-O2', filename, '-o', obj_filename] + CSMITH_CFLAGS)
print('3) Run natively')
correct = shared.timeout_run(Popen([obj_filename], stdout=PIPE, stderr=PIPE), 3)
except Exception as e:
print('Failed or infinite looping in native, skipping', e)
sys.exit(1) # boring
print('4) Compile JS-ly and compare')
def try_js(args):
shared.run_process([shared.EMCC] + EMCC_ARGS + CSMITH_CFLAGS + args +
[filename, '-o', js_filename])
js = shared.run_js_tool(js_filename, stderr=PIPE)
assert correct == js
# Try normally, then try unaligned because csmith does generate nonportable code that requires x86 alignment
# If you are sure that alignment is not the cause, disable it for a faster reduction
for args in [[]]:
try:
try_js(args)
break
except Exception:
pass
else:
sys.exit(0)
sys.exit(1) # boring
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