| Issue |
123129
|
| Summary |
Clang Segmentation Fault When Instantiating a Template with Dynamic Array Initialization
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
SOHAIBALOUSSI
|
this bug occurs when compiling C++ code with Clang 12.0.1 (Ubuntu 12.0.1-19ubuntu3):
A segfault is triggered during template instantiation when initializing a dynamic array in the constructor of a class template
```SQL
./Array.hpp:19:19: error: cannot determine allocated array size from initializer
arr = new T[]();
^
main.cpp:5:16: note: in instantiation of member function 'Array<int>::Array' requested here
Array<int> arr(10);
^
```
the bug arises when attempting to allocate an array with the following constructor signature in Array.hpp:
```c++
template<typename T>
class Array {
public:
Array(size_t size) {
arr = new T[](); // Error: Cannot determine array size
}
};
```
the Clang compiler crashes with a segmentation fault, and the following stack dump is provided in the report
```
#0 0x00007fa27317e2a1 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int)
...
#34 0x000000000040ea25 _start (/usr/lib/llvm-12/bin/clang+0x40ea25)
```
[main-7097c7.zip](https://github.com/user-attachments/files/18430962/main-7097c7.zip)
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