To get a trial key
fill out the form below
Team License (standard version)
Enterprise License (extended version)
* By clicking this button you agree to our Privacy Policy statement

** This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Request our prices
New License
License Renewal
--Select currency--
USD
EUR
GBP
RUB
* By clicking this button you agree to our Privacy Policy statement

** This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Message submitted.

Your message has been sent. We will email you at


If you haven't received our response, please do the following:
check your Spam/Junk folder and click the "Not Spam" button for our message.
This way, you won't miss messages from our team in the future.

>
>
Examples of errors detected by the V543…

Examples of errors detected by the V543 diagnostic

April 5, 2021

V543. It is odd that value 'X' is assigned to the variable 'Y' of HRESULT type.


WinMerge

V543 It is odd that value '-1' is assigned to the variable 'h' of HRESULT type. Merge plugins.cpp 992


static HRESULT safeInvokeA(LPDISPATCH pi, VARIANT *ret,
                           DISPID id, LPCCH op, ...)
{
  HRESULT h;
  ....
  // set h to FAILED
  h = -1;
  ....
}

Similar errors can be found in some other places:

  • V543 It is odd that value '-1' is assigned to the variable 'h' of HRESULT type. Merge plugins.cpp 1033

Oracle VM Virtual Box

V543 It is odd that value 'true' is assigned to the variable 'mRemoveSavedState' of HRESULT type. machineimpl.cpp 12247


class ATL_NO_VTABLE SessionMachine : public Machine
{
  ....
  HRESULT mRemoveSavedState;
  ....
}

HRESULT SessionMachine::init(Machine *aMachine)
{
  ....
  /* default is to delete saved state on
   * Saved -> PoweredOff transition */
  mRemoveSavedState = true;
  ....
}

Unreal Engine 4

V543 It is odd that value '-1' is assigned to the variable 'Result' of HRESULT type. unrealaudiodevicewasapi.cpp 568


#define S_OK     ((HRESULT)0L)
#define S_FALSE  ((HRESULT)1L)

bool FUnrealAudioWasapi::OpenDevice(uint32 DeviceIndex,
                                    EStreamType::Type StreamType)
{
  check(WasapiInfo.DeviceEnumerator);

  IMMDevice* Device = nullptr;
  IMMDeviceCollection* DeviceList = nullptr;
  WAVEFORMATEX* DeviceFormat = nullptr;
  FDeviceInfo DeviceInfo;
  HRESULT Result = S_OK;                                   // <=
  ....
  if (!GetDeviceInfo(DataFlow, DeviceIndex, DeviceInfo))
  {
    Result = -1;                                           // <=
    goto Cleanup;
  }
  ....
}

Mozilla Thunderbird

V543 It is odd that value '-1' is assigned to the variable 'm_lastError' of HRESULT type. MapiApi.cpp 1050


class CMapiApi {
 ....
 private:
  static HRESULT m_lastError;
  ....
};

CMsgStore *CMapiApi::FindMessageStore(ULONG cbEid, LPENTRYID lpEid) {
  if (!m_lpSession) {
    MAPI_TRACE0("FindMessageStore called before session is open\n");
        m_lastError = -1;
    return NULL;
  }
  ....
}

Similar errors can be found in some other places:

  • V543 It is odd that value '-1' is assigned to the variable 'm_lastError' of HRESULT type. MapiApi.cpp 817
  • V543 It is odd that value '-1' is assigned to the variable 'm_lastError' of HRESULT type. MapiApi.cpp 1749

Popular related articles
PVS-Studio ROI

Date: 01.30.2019

Author: Andrey Karpov

Occasionally, we're asked a question, what monetary value the company will receive from using PVS-Studio. We decided to draw up a response in the form of an article and provide tables, which will sho…
The Last Line Effect

Date: 05.31.2014

Author: Andrey Karpov

I have studied many errors caused by the use of the Copy-Paste method, and can assure you that programmers most often tend to make mistakes in the last fragment of a homogeneous code block. I have ne…
The Ultimate Question of Programming, Refactoring, and Everything

Date: 04.14.2016

Author: Andrey Karpov

Yes, you've guessed correctly - the answer is "42". In this article you will find 42 recommendations about coding in C++ that can help a programmer avoid a lot of errors, save time and effort. The au…
Static analysis as part of the development process in Unreal Engine

Date: 06.27.2017

Author: Andrey Karpov

Unreal Engine continues to develop as new code is added and previously written code is changed. What is the inevitable consequence of ongoing development in a project? The emergence of new bugs in th…
Technologies used in the PVS-Studio code analyzer for finding bugs and potential vulnerabilities

Date: 11.21.2018

Author: Andrey Karpov

A brief description of technologies used in the PVS-Studio tool, which let us effectively detect a large number of error patterns and potential vulnerabilities. The article describes the implementati…
The Evil within the Comparison Functions

Date: 05.19.2017

Author: Andrey Karpov

Perhaps, readers remember my article titled "Last line effect". It describes a pattern I've once noticed: in most cases programmers make an error in the last line of similar text blocks. Now I want t…
Free PVS-Studio for those who develops open source projects

Date: 12.22.2018

Author: Andrey Karpov

On the New 2019 year's eve, a PVS-Studio team decided to make a nice gift for all contributors of open-source projects hosted on GitHub, GitLab or Bitbucket. They are given free usage of PVS-Studio s…
PVS-Studio for Java

Date: 01.17.2019

Author: Andrey Karpov

In the seventh version of the PVS-Studio static analyzer, we added support of the Java language. It's time for a brief story of how we've started making support of the Java language, how far we've co…
The way static analyzers fight against false positives, and why they do it

Date: 03.20.2017

Author: Andrey Karpov

In my previous article I wrote that I don't like the approach of evaluating the efficiency of static analyzers with the help of synthetic tests. In that article, I give the example of a code fragment…
Appreciate Static Code Analysis!

Date: 10.16.2017

Author: Andrey Karpov

I am really astonished by the capabilities of static code analysis even though I am one of the developers of PVS-Studio analyzer myself. The tool surprised me the other day as it turned out to be sma…

Comments (0)

Next comments

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
This website uses cookies and other technology to provide you a more personalized experience. By continuing the view of our web-pages you accept the terms of using these files. If you don't want your personal data to be processed, please, leave this site.
Learn More →
Accept