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Linker error: duplicate symbols from libucrt and libmmt, but need both
12/21/2024 by T. J. Evers
I'm trying to build a project with the Intel OneAPI 2024.2.1 compiler. My 32-bit release build has the issue of multiply defined symbols. There's a few math functions that are causing problems: lld-link: error: duplicate symbol: __CIcos >>> defined at libmmt.lib(cos_iface_c99.obj) >>> defined at libucrt.lib(cos_impl.obj) lld-link: error: duplicate symbol: __CIexp […]
Is there a macro expansion issue in C++? [closed]
12/21/2024 by haibin zhao
I have defined several macros, but one cannot be recognized. May I ask where the problem lies Here are the codes for two files I am a newcomer to C++, and I copied the macros from elsewhere Writing someone else's source code like this did not result in any errors, […]
Does Intel SGX SDK check invalid memory access from untrusted app to enclave in simulation mode? If not, any alternative method to check?
12/21/2024 by Chen Zhou
I saw this answer to a similar question. However, I am still wondering if the SDK in simulation mode will recognize invalid access from untrusted app to the enclave memory and report such an incident. It would be frustrating if the simulation mode works ok, but the code actually cannot […]
Why is the condition_variable in the thread pool not woken up?
12/21/2024 by 牛牪犇
I wrote a thread pool by myself, and the Result class is used to obtain the calculation results of the thread pool tasks. Initially, I used a simple semaphore mechanism to implement thread synchronization. The code is as follows: void Semaphore::wait() { std::unique_lock lock(mutex_); condition_.wait(lock, [&] { return count_ > […]
pass by reference not modifying value cpp
12/21/2024 by Anirudh Agrawal
On interview bit, I am passing a vector by reference but it is not modifying. pls help here is code ` bool c(int n, int ind, int sum, int count, vector & A, vector & ans){ if(ind>=n){ return false; } if(count == ans.size()){ return sum == 0; } if(A[ind]
GCC/Clang Linker Map File Doesn't Provide Function Return Type
12/21/2024 by Cyclone
I am a MSVC user and lately I am using Linux with GCC and Clang. I made a parser for MSVC linker map files to extract some functions with their parameters and return type. But I realized gcc map file doesn't generate functions mangled name and return type and also […]
rules for choosing between conversion operators
12/21/2024 by xiaokaoy
It makes sense that the assignment expression has no ambiguity. But I don't understand why the relational expression does have. #include class MyClass { public: operator int() { return 0; } operator unsigned int() { return 1u; } }; int main() { MyClass obj; std::cout
Hpp function definitions are not being found by VS code [duplicate]
12/21/2024 by jonathan tyomkin
I am using VS code to write a small project in CPP, but I have encountered an error where my definitions of functions that i have declared in my HPP file are not being found. I have created a simple HPP and CPPfiles for testing with the following code: // […]
IDE unable to render call graph for member functions of classes referenced through smart pointers
12/21/2024 by Skegg
When I declare a smart pointer in a class, the IDE has issues rendering the call graph when it's used in one of its member functions. This is what I mean: classX.hpp class classX: { std::unique_ptr pClassB; ....... } src.cpp classX::myFunc { ..... ..... pClassB->itsFunc(); // IDE unable to create […]
What does syntax of the form `template <…> some_type(…) -> some_type<…>` mean? [duplicate]
12/21/2024 by Loki Astari
Reading a library and trying to understand how it works. But I don't understand the following syntax: template struct Data { T value; }; // Don't understand what is happening here. template Data(T) -> Data;

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