Hi
i got an Access Violation error with AnsiStrings n char*. First chance exception at $7C812A5B. Exception class EAccessViolatio n with message 'Access violation at address 0040467E in module 'Serial.exe'. Write of address 0518F503'. Process Serial.exe
the code is here: - AnsiString temp = Hex2Ascii(APDUCmd, index);
-
-
AnsiString Hex2Ascii(char *Hex, unsigned int HexLen)
-
{
-
char *AsciiChar = "0";
-
AnsiString temp;
-
Hex2Ascii(Hex, AsciiChar, HexLen);
-
temp = AsciiChar;
-
return temp;
-
}
actually i hav another Hex2Ascii function: - AnsiString Hex2Ascii(AnsiString HexAnsi, unsigned int HexLen)
-
{
-
char *AsciiChar = "0";
-
char *HexChar = HexAnsi.c_str();
-
AnsiString temp;
-
Hex2Ascii(HexChar, AsciiChar, HexLen);
-
temp = AsciiChar;
-
return temp;
-
-
}
APDUCmd is a char array:
if i call Hex2Ascii with array length less than 53, it calls AnsiString Hex2Ascii(AnsiS tring HexAnsi, unsigned int HexLen) and no error.
if greater than or equal 53, it calls AnsiString Hex2Ascii(char *Hex, unsigned int HexLen) and Access Violation error occurs.
Can anyone help me solve this?
1  5992   sicarie 4,677
Recognized Expert Moderator Specialist
Hi
i got an Access Violation error with AnsiStrings n char*.
First chance exception at $7C812A5B. Exception class EAccessViolatio n with message 'Access violation at address 0040467E in module 'Serial.exe'. Write of address 0518F503'. Process Serial.exe
the code is here:
- AnsiString temp = Hex2Ascii(APDUCmd, index);
-
-
AnsiString Hex2Ascii(char *Hex, unsigned int HexLen)
-
{
-
char *AsciiChar = "0";
-
AnsiString temp;
-
Hex2Ascii(Hex, AsciiChar, HexLen);
-
temp = AsciiChar;
-
return temp;
-
}
actually i hav another Hex2Ascii function:
- AnsiString Hex2Ascii(AnsiString HexAnsi, unsigned int HexLen)
-
{
-
char *AsciiChar = "0";
-
char *HexChar = HexAnsi.c_str();
-
AnsiString temp;
-
Hex2Ascii(HexChar, AsciiChar, HexLen);
-
temp = AsciiChar;
-
return temp;
-
-
}
APDUCmd is a char array:
if i call Hex2Ascii with array length less than 53, it calls AnsiString Hex2Ascii(AnsiS tring HexAnsi, unsigned int HexLen) and no error.
if greater than or equal 53, it calls AnsiString Hex2Ascii(char *Hex, unsigned int HexLen) and Access Violation error occurs.
Can anyone help me solve this?
In your recursive call, you pass it three variables (HexChar, AsciiChar, HexLen), instead of the two that are declared. Other than that, I'm not too sure what might be going on there... Anyone else have an idea?
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