https://bugs.kde.org/show_bug.cgi?id=407904
Bug ID: 407904
Summary: Inlined member operators lose class name in logs and
generated suppressions
Product: valgrind
Version: 3.13.0
Platform: RedHat RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: bugzi...@poradnik-webmastera.com
Target Milestone: ---
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)
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