SUMMARY
When class provide overloaded operators which are inlined somewhere, in logs and for --gen-suppressions they lose class name.

STEPS TO REPRODUCE
1. Create file with this code:
[code]
class Test
{
    int* p;
    int n;
public:
    Test(int* p, int n) : p(p), n(n) {}
    
    operator bool();
};

//__attribute__((noinline))
Test::operator bool() { return p[n] > 0; }

int main()
{
    int* p = new int[2];
    Test* t = new Test(p, 2);
    return (bool)*t;
}
[/code]

2. Compile using
g++ -o test test.cc -O3 -g

3. Run
valgrind --gen-suppressions=all ./test

OBSERVED RESULT
When operator bool() is inlined, it prints this:

==21714== Invalid read of size 4
==21714==    at 0x4004EF: operator bool (test.cc:12)
==21714==    by 0x4004EF: main (test.cc:18)
==21714==  Address 0x5a22048 is 0 bytes after a block of size 8 alloc'd
==21714==    at 0x4C2A888: operator new[](unsigned long) (vg_replace_malloc.c:423)
==21714==    by 0x4004DA: main (test.cc:16)
==21714== 
{
   <insert_a_suppression_name_here>
   Memcheck:Addr4
   fun:operator bool
   fun:main
}
==21714== 


EXPECTED RESULT
When operator bool() is not inlined (after uncommenting line with noinline attribute), it prints this:

==21687== Invalid read of size 4
==21687==    at 0x4005F7: Test::operator bool() (test.cc:12)
==21687==    by 0x4004F9: main (test.cc:18)
==21687==  Address 0x5a22048 is 0 bytes after a block of size 8 alloc'd
==21687==    at 0x4C2A888: operator new[](unsigned long) (vg_replace_malloc.c:423)
==21687==    by 0x4004DA: main (test.cc:16)
==21687== 
{
   <insert_a_suppression_name_here>
   Memcheck:Addr4
   fun:_ZN4TestcvbEv
   fun:main
}


SOFTWARE/OS VERSIONS
OS: CentOS Linux release 7.6.1810 (Core)
Valgrind: valgrind-3.13.0
g++ used to compile example code: g++ (GCC) 4.8.5 20150623 (Red Hat 4.8.5-36)