https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117246
Bug ID: 117246
Summary: g++ O1 finline bug
Product: gcc
Version: 12.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: wso4133560 at gmail dot com
Target Milestone: ---
This is my example code:
#include <iostream>
class Test
{
public:
static void* operator new(std::size_t count, int value)
{
std::cout << __LINE__ << " " << value << std::endl;
Test *test = static_cast<Test *>(malloc(count));
//Test * volatile test = static_cast<Test *>(malloc(count));
test->value = value;
return test;
}
Test()
{
std::cout << __LINE__ << " " << value << std::endl;
}
public:
int value;
};
int main(int argc, char *argv[])
{
Test *test = new(1) Test{};
std::cout << __LINE__ << " " << test->value << std::endl;
delete test;
return 0;
}
I used command "g++ error.cpp -O0 -o error", get result:
8 1
17 1
27 1
I used command "g++ error.cpp -O1 -fno-inline -o error", get result:
8 1
17 1
27 1
I used command "g++ error.cpp -O1 -o error", get result:
8 1
17 0
27 0
