Runtime error-help plz.
in [MFC]
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From: karim on 29 Jun 2007 06:16 hi , the following code has been successfully compiled and executed in vc6.0,and it has also compiled in vc8.0 but causing problem runtime. can anybody help me please......... pNext is of type LPTSTR; BYTE bVal = 0; if(_stscanf(pNext,TEXT("%x "), &bVal)==1) error: Runtime check Failure #2 stack around the variable 'bVal' was corrupted. -karimulla.
From: ajk on 29 Jun 2007 06:34 On Fri, 29 Jun 2007 03:16:02 -0700, karim <karim(a)discussions.microsoft.com> wrote: >hi , >the following code has been successfully compiled and executed in vc6.0,and >it has also compiled in vc8.0 but causing problem runtime. >can anybody help me please......... >pNext is of type LPTSTR; >BYTE bVal = 0; > if(_stscanf(pNext,TEXT("%x "), &bVal)==1) > >error: Runtime check Failure #2 stack around the variable 'bVal' was >corrupted. > >-karimulla. try coding that using fgets() instead and in the future avoid any scanf as the plague. scanf is a function that shouldn't be used in modern programs, there are so many other methods to parse a string which are much safer.
From: SvenC on 29 Jun 2007 07:46 Hi, "karim" <karim(a)discussions.microsoft.com> wrote in message news:3C04F758-6C5D-4865-9536-18F5A235CEF0(a)microsoft.com... > hi , > the following code has been successfully compiled and executed in > vc6.0,and > it has also compiled in vc8.0 but causing problem runtime. > can anybody help me please......... > pNext is of type LPTSTR; > BYTE bVal = 0; > if(_stscanf(pNext,TEXT("%x "), &bVal)==1) %x is asking for 32 bit and you are providing 8 bit (a BYTE), so not only bVal is written to but memory directly around also. use this: BYTE bVal = 0; int i; if((_stscanf(pNext,TEXT("%x "), &i) == 1) bVal = (BYTE)i; -- SvenC
From: karim on 29 Jun 2007 09:08 hi, "ajk" wrote: > On Fri, 29 Jun 2007 03:16:02 -0700, karim > <karim(a)discussions.microsoft.com> wrote: > > >hi , > >the following code has been successfully compiled and executed in vc6.0,and > >it has also compiled in vc8.0 but causing problem runtime. > >can anybody help me please......... > >pNext is of type LPTSTR; > >BYTE bVal = 0; > > if(_stscanf(pNext,TEXT("%x "), &bVal)==1) > > > >error: Runtime check Failure #2 stack around the variable 'bVal' was > >corrupted. > > > >-karimulla. > > try coding that using fgets() instead and in the future avoid any > scanf as the plague. scanf is a function that shouldn't be used in > modern programs, there are so many other methods to parse a string > which are much safer. the issuue here is that i am using a BYTE pointer and the method you suggested take FILE * and right now i don't have option to change it to File * as it was used in many places in the project. can you suggest way to correct it using the same method. -karimulla. > >
From: ajk on 29 Jun 2007 19:31
On Fri, 29 Jun 2007 06:08:03 -0700, karim <karim(a)discussions.microsoft.com> wrote: >the issuue here is that i am using a BYTE pointer and the method you >suggested take FILE * and right now i don't have option to change it to File >* as it was used in many places in the project. can you suggest way to >correct it using the same method. > >-karimulla. maybe you can show us how _stnscanf looks like, cause it is not a standard function that I know of. |