Spoke too early. Sorry for the noise.
-fsanitize=address does not seem to work on armv7l, it seems to crash on
runtime (I thought it worked on compile-time only):
==1280== ERROR: AddressSanitizer: stack-buffer-overflow on address
0xbe99efb0 at pc 0x29483 bp 0xbe99ef38 sp 0xbe99ef3c
WRITE of size 4 at 0xbe99efb0 thread T0
#0 0x29481 (/home/ubuntu/fidelio/software/test+0x29481)
#1 0x3376d (/home/ubuntu/fidelio/software/test+0x3376d)
(...)
#251 0x3376d (/home/ubuntu/fidelio/software/test+0x3376d)
#252 0x3376d (/home/ubuntu/fidelio/software/test+0x3376d)
==1280== AddressSanitizer CHECK failed:
../../../../src/libsanitizer/asan/asan_report.cc:250 "((name_end)) !=
(0)" (0x0, 0x0)
#0 0xb594dc61 (/usr/lib/arm-linux-gnueabihf/libasan.so.0.0.0+0xdc61)
#1 0xb5953353 (/usr/lib/arm-linux-gnueabihf/libasan.so.0.0.0+0x13353)
(...)
#254 0x3376d (/home/ubuntu/fidelio/software/test+0x3376d)
Or is this the expected behavior?
On 01/02/2015 06:15 PM, "João M. S. Silva" wrote:
> On 01/02/2015 07:04 AM, Tom Hughes wrote:
>> Try building with -fsanitize=address which is a clang/gcc tool that does
>> similar things to valgrind, but because it works at compile time it can
>> insert gaps between stack variables.
>
> Thanks, I've added that switch to my list. It seems to work both on
> x86_64 and armv7l. I don't seem to have any error, now that the sprintf
> issue is solved.
>
> I tried this switch yesterday both with clang and gcc and got some
> warning/error (in red) but no human-readable stack trace. I tried to add
> -fno-omit-frame-pointer to make the stack trace readable without
> success. So I concluded it didn't work on armv7l (yesterday I didn't try
> x86_64).
>
> Anyway it seems to be working so I'll keep these switches. Thanks.
>
--
João M. S. Silva
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