logo
Tags down

shadow

Heap corruption under Win32; how to locate?


By : user41073
Date : July 26 2020, 01:00 PM
With these it helps My first choice would be a dedicated heap tool such as pageheap.exe.
Rewriting new and delete might be useful, but that doesn't catch the allocs committed by lower-level code. If this is what you want, better to Detour the low-level alloc APIs using Microsoft Detours.
code :


Share : facebook icon twitter icon

C++ Heap Corruption: Local heap variable causing issues


By : Prativas Basu
Date : March 29 2020, 07:55 AM
I wish this help you The code you've given looks OK - with one caveat: the initial value of counter is not in the code itself. So either you don't start at counter = 0, or some other piece of code is stomping on your indices buffer.
That's the beauty of heap corruptions. There is no guarantee that the bug is in the removed portion on the code. It may simply hide the bug that exists somewhere else in your code.

Heap corruption - "Free Heap block 61af0f0 modified at 61af194 after it was freed" C++


By : khan
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further
So from what I know, the error I'm getting is caused by accessing (deleting again) block of memory which was already freed.

GFlags setting to catch heap corruption (other than Page Heap)?


By : TheColonel73
Date : March 29 2020, 07:55 AM
hop of those help? IMHO the easiest way to control all this checking is using the ApplicationVerifier. You have a perfect UI and you can play around with all flags. Heap Free checking is a good flag without too much overhead. So if a heap block is badly modified and the block is freed you get a break into the debugger. If the corruption occurs near the allocation and freeing of the block, this might help. AFAIK "Heap parameter chechking" is just a lightweight "heap validation on call". I never had any success with this. Heap tail checking and tagging is easy and fast. Works sometimes for me.
You know that you can control this on a per application base also with gflags.

HEAP CORRUPTION DETECTED: after normal block... CRT detected that the application worte to memory after end of heap buff


By : FrankDu
Date : March 29 2020, 07:55 AM
will help you buffer[valread] = '\0'; is attempting to access an element of buffer that doesn't exist. The program behaviour is therefore undefined.
If you had used data.at(valread) instead then a std::exception would have been thrown (and intercepted at your catch site), as required by the C++11 standard.

NEW/Delete Heap Corruption Detected : CRT detected that the application wrote to memory after end of heap buffer


By : user5062104
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , In the following snippet, I am trying to de-allocate the dynamic memory used to create the a Set using New but after erasing the nodes of SET, if I try to delete. , First let me quote a programmer I learned a lot from:
Related Posts Related Posts :
  • How can I store all data the user inputs and then show them if they want to see all of them
  • Use depth texture in compute shader
  • error: conflicting declaration using universal references
  • Using std::optional instead of own structure
  • Is it necessary to make pointer Null when there is no use of it at the end in c++
  • How are std::array's compared in C++?
  • Herb Sutter's article on making virtual functions private
  • Interaction between copy-and-swap idiom and move operations
  • Problems using overloaded extraction operator in C++
  • segmentation fault on reading certain files, seems to be unrelated to filesize
  • Protected members of base classes inaccessible to friends of derived classes
  • Constructing smart pointer from stack allocated raw pointer
  • Array Index Overload Bug
  • Why I'm getting " void value not ignored as it ought to be"?
  • Need help converting a string to a char in c++ ---- ERROR A value of type "const char *" cannot be used to ini
  • What means put preprocessor in std::string?
  • Is it possible to compare an array elements with a hard-coded initializer list without loop?
  • Complexity of an specific algorithm with 3 for?
  • Character converting funtion std::isupper() & std::islower() C++17
  • Hide method taking template parameter reference in cpp file
  • Disable the std::initializer_list constructor
  • What does "static_cast<double>(123)" mean in C++?
  • How to use libraries (*.a files) in C++ when using cmake
  • Use class name for conditional macro expansion
  • C++ variable names (can declare main as variable however same is not true for other functions name)
  • error: ‘nullptr’ was not declared in this scope
  • Why is the z coordinate flipped after multiplying with a matrix in GLSL - OpenGL
  • QML use C ++ function with parameters
  • How can I convert a character from a string into a integer variable using C++
  • Can range-v3 contains work on initializer list?
  • How would I calculate the runtime of this function?
  • Is there a way to produce random numbers simultaneously in c++? If not, is there a work around?
  • How do you create a dynamic array for struct elements of different variable types for c++?
  • Subclass address equal to virtual base class address?
  • _mm_xor_pd fails with product = 0
  • I got a stack overflow error in my int main()
  • Why does imwrite on BMP image gets stuck / does not return?
  • Why program throws runtime error while iterating over an emtpy vector in c++
  • Unknown error while debugging a QT-application with Visual Studio Code and CMake-Tools
  • Is `string.assign(string.data(), 5)` well-defined or UB?
  • Modern way to have a map that can point-to or reference data of different types that has been allocated on the stack
  • Why does my recursive function print in descending order and then in ascending order?
  • Fill vector with true value
  • Automate "yes" to Popen SSH command
  • warning: type qualifiers ignored on function return type [-Wignored-qualifiers]
  • What is wrong in this C++ code snippet with template<class Vector>
  • Printing hollow square with array
  • Overload -> arrow operator in shared_ptr<interface> instance with no pure virtual destructor in interface
  • Run thread with derived method from base class without using templates
  • Issues with template class conversion - unable to deduce function called
  • How is memory deallocated in c++
  • is it possible to reduce delete code size with templates in C++
  • How to resolve Ninja c++ build and execution
  • Trying to control multithreaded access to array using std::atomic
  • Checking which object called the other's object method
  • How do we run a single test using Google bazel
  • Should I add other files to git except .cpp?
  • Idiom for handling size_t underflow in loop condition
  • What is Kotlin for C++ push_back() and pop_back() on a string?
  • Tree implementation in C++: Cannot convert Node to int* Ask Question
  • shadow
    Privacy Policy - Terms - Contact Us © voile276.org