https://bugs.llvm.org/show_bug.cgi?id=41939
Bug ID: 41939
Summary: Frontend crash due to infinite template recursion
Product: clang
Version: 8.0
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: mschwa...@gmail.com
CC: htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org,
neeil...@live.com, richard-l...@metafoo.co.uk
The following (non-valid) C++ snippet causes clang version 8.0 to crash:
// compiled using clang++ test.cpp
#include <iostream>
#include <vector>
template <typename C,
typename std::enable_if_t<std::is_same<decltype(std::ostream() <<
C()),std::ostream&>::value, int> = 0>
std::ostream& operator<<(std::ostream& o, const C& container){
for(const auto& i : container){
o << i;
o << " ";
}
return o;
}
int main(){
std::vector<int> vec = {1,2,3,4};
std::cout<<vec<<std::endl;
}
clang-8: error: unable to execute command: Segmentation fault (core dumped)
clang-8: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 8.0.0 (tags/RELEASE_800/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
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