I tried -fsanitize-coverage=trace-pc with g++ 7.5.0 on a X64 Ubuntu system.
The linker complained that a function __sanitizer_cov_trace_pc was undefined.
So I added it in my program like this:
extern "C" void __sanitizer_cov_trace_pc()
{
printf("Address: %p\n", __builtin_return_address(0));
}
I then build with
g++ -std=c++11 -g -O0 -fsanitize-coverage=trace-pc ./test.cpp -o ./test
Unfortunately, the function seems to call itself recursively and finishes with
a stack overflow.
What do I do wrong?
I would also rather use prefabricated functions for sancov.
Regards
________________________________
From: Martin Liška <[email protected]>
Sent: Tuesday, January 19, 2021 10:23 AM
To: Roger Phillips <[email protected]>; [email protected] <[email protected]>
Subject: Re: SanitizerCoverage support
On 1/19/21 10:07 AM, Roger Phillips via Gcc wrote:
> Greetings,
>
> can you tell me if support of SanitizerCoverage is planned for gcc in the
> foreseeable future?
>
> Regards
>
Hello.
We do support it, please see 'man gcc':
-fsanitize-coverage=trace-pc
-fsanitize-coverage=trace-cmp
Martin
