https://bugs.llvm.org/show_bug.cgi?id=38672
Bug ID: 38672
Summary: LTO results in crash in whole-module-devirtualization
with Assertion `hasInitializer() && "GV doesn't have
initializer!"' failed.
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Linker
Assignee: unassignedb...@nondot.org
Reporter: trent.xin.t...@gmail.com
CC: llvm-bugs@lists.llvm.org
I have a small test case that fails to compile on latest LLVM LTO.
~/llvmtot/build-debug/bin/clang++ main.cpp -c
~/llvmtot/build-debug/bin/clang++ -flto -O3 unknown.cpp -c
~/llvmtot/build-debug/bin/clang++ -flto main.o unknown.o -o ab -O3
ld: /home/trentxintong/llvmfb/llvm/include/llvm/IR/GlobalVariable.h:142:
llvm::Constant* llvm::GlobalVariable::getInitializer(): Assertion
`hasInitializer() && "GV doesn't have initializer!"' failed.
[~/linkerbug/reduced]$ cat B.hpp
#include <iostream>
using namespace std;
template <typename T>
class B {
public:
B() {}
virtual void func1() {
std::cout << "func1 called in class B\n";
}
};
[~/linkerbug/reduced]$ cat main.cpp
#include "B.hpp"
void unknown(B<int> *);
int main(int argc, char** argv) {
B<int> a;
unknown(&a);
return 0;
}
[~/linkerbug/reduced]$ cat unknown.cpp
#include "B.hpp"
__attribute__((optnone))
void unknown2(B<int> *y) {}
void unknown(B<int> *x) {
B<int> y;
unknown2(&y);
}
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
