You can try to dump the |cmd| variable in open_llvm_symbolizer() and figure out why subprocess.Popen() fails. I'd suspect you simply don't have the llvm-symbolizer binary (because GCC doesn't use it), but in that case open_llvm_symbolizer() should've bailed out early.
Another question: have you tried setting ASAN_OPTIONS=symbolize=1 ? On Fri, Jan 10, 2014 at 3:03 PM, laser <[email protected]> wrote: > I got the permission error below , could you take a look? Thanks! > > root@laser-lx:/tmp# sudo ./segerror 2>&1 | ./asan_symbolize.py | c++filt > > Traceback (most recent call last): > File "./asan_symbolize.py", line 391, in <module> > loop = SymbolizationLoop() > File "./asan_symbolize.py", line 327, in __init__ > self.llvm_symbolizer = LLVMSymbolizerFactory(self.system) > File "./asan_symbolize.py", line 108, in LLVMSymbolizerFactory > return LLVMSymbolizer(symbolizer_path) > File "./asan_symbolize.py", line 58, in __init__ > self.pipe = self.open_llvm_symbolizer() > File "./asan_symbolize.py", line 71, in open_llvm_symbolizer > stdout=subprocess.PIPE) > File "/usr/lib/python2.7/subprocess.py", line 679, in __init__ > errread, errwrite) > File "/usr/lib/python2.7/subprocess.py", line 1249, in _execute_child > raise child_exception > OSError: [Errno 13] Permission denied > > > > On Friday, January 10, 2014 5:15:04 PM UTC+8, Glider wrote: >> >> There should be the asan_symbolize.py script in your checkout, see >> http://clang.llvm.org/docs/AddressSanitizer.html for the instructions >> how to use it. >> Make sure to build your program with debug info. >> >> HTH, >> Alex >> >> On Fri, Jan 10, 2014 at 1:03 PM, laser <[email protected]> wrote: >> > Hello, >> > >> > I compiled a sample segment fault c code with address-santizer in >> > gcc4.8, >> > but no line number show, how to get it? >> > >> > ==4587== ERROR: AddressSanitizer: SEGV on unknown address 0x17fbff12 (pc >> > 0x08048925 sp 0xbfdff850 bp 0xbfdff958 T0) >> > AddressSanitizer can not provide additional info. >> > #0 0x8048924 (/tmp/segerror+0x8048924) >> > #1 0xb5f5f4d2 (/lib/i386-linux-gnu/libc-2.15.so+0x194d2) >> > #2 0x8048740 (/tmp/segerror+0x8048740) >> > ==4587== ABORTING >> > >> > >> > -- >> > You received this message because you are subscribed to the Google >> > Groups >> > "address-sanitizer" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> > an >> > email to [email protected]. >> > For more options, visit https://groups.google.com/groups/opt_out. > > -- > You received this message because you are subscribed to the Google Groups > "address-sanitizer" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups "address-sanitizer" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
