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Warning C6385 in Visual Studio


By : Dragos George
Date : September 16 2020, 01:00 AM
I wish this help you It seems in Visual Studio 2019 Microsoft is enforcing SAL analysis rules on C and C++ code by default, even though there are still plenty of false positives like your case here.
One thing you can do for now is disable the warning giving a false positive:
code :
#pragma warning(push)
#pragma warning(disable:6385)
Product *getProductsFromDB( int &numelements ) {
 ...
}
#pragma warning(pop)


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Why does this code emit buffer overrun warnings(C6385/C6386) in code analysis on Visual Studio 2012?


By : GemLH
Date : March 29 2020, 07:55 AM
this will help g++ 4.8 and clang++ 3.3 compile this without warning or error (using -Wall -Werror). In fact, we can use C++11's std::array and its at method to get bounds checking, and
code :
#include <array>

int main() {
  unsigned int k = 1U, seed = 12345U;
  std::array<int,55> randomNumbers;

  randomNumbers.at(54) = seed;

  for(unsigned int i = 1U; i <= 54U; ++i) {
    unsigned int ii = ((21U * i) % 55U) - 1U;
    randomNumbers.at(ii) = k;
    k = seed - k;
    seed = randomNumbers.at(ii);
  }

  return 0;
}
>>> sorted([21*n % 55 - 1 for n in range(1,55)])
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53]

warning MSB8012 - Building a Visual Studio 2003 project on Visual studio 2015


By : Lenny
Date : March 29 2020, 07:55 AM
will be helpful for those in need To fix the problem you should change the options for you project as follows:

Getting Warning C6385 if try to use function


By : user891265
Date : March 29 2020, 07:55 AM
it helps some times The message comes out of Visual Studio's static code analyzer, not the compiler. The analyzer is relatively new and does not work very well - it shows a lot of false positives. In your case, it simply did not notice that geti() always returns 2.
The real problem in your code is that *snapPts2 = snapPts[1]; uses uninitialized memory. This is because _alloca allocates memory from the stack, but does not initialize it.

How to resolve MSB3277 warning message in Visual Studio while building Test project in Visual Studio?


By : user2228677
Date : March 29 2020, 07:55 AM
Does that help Add reference without version to Microsoft.AspNetCore.App in your test project file.
code :
<PackageReference Include="Microsoft.AspNetCore.App" />

Visual Studio 2019 C6385 / C6386 (buffer overrun warning) on __m256 array


By : user3079337
Date : March 29 2020, 07:55 AM
I hope this helps you . It is a false positive but the code analyser doesn't know it (probably because it doesn't 'trust' the malloc() call)! Using 'new' instead clears the warning (at least, in my VS2019 solution) …
code :
void func(const size_t p_ranks)
{
    __m256 v256f_x = _mm256_set1_ps(1.0f);
//  __m256* v256f_valid_mask = (__m256*)malloc(sizeof(__m256) * p_ranks);
    #if defined(__cplusplus)
    __m256* v256f_valid_mask = new __m256[p_ranks];
    #else
    #define MAXRANKS 100 // Would probably be defined elsewhere!
    __m256 v256f_valid_mask[MAXRANKS];
    #endif

    for (size_t rank = 1; rank < p_ranks; rank++)
    {
        v256f_valid_mask[rank] = _mm256_cmp_ps(v256f_x, _mm256_setzero_ps(), _CMP_GT_OQ); // <<
    }
}
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