Solaris

Hi,

wcslen(), strlen() returns size_t.
On 64-bit platform i want to use int like

str length is 10.

int len = wcslen(str);


On 64-bit what should I need to do if i wants the length in int. Because getting error as "Conversion of 64 bit type value to "int" causes truncation".
if i will use size_t instead of int like
size_t len = wcslen(str);

Then it is feasible. Should I do casting like:

int len = (int) wcslen(str);

which is better to use?

on 64-bit platforms, size_t is probably 64 bits, while int is probably 32 (not always the case though, and is sometimes compiler or compiler-setting specific. Anyway, you should use

Code:

size_t len = wcslen(str);

To test to see how long each is, do:

Code:

#include <stdio.h>
main (int c, char **v) { 
printf("int length is %d\nsize_t length is %d\n",sizeof(int), sizeof(size_t));
}

Hi,

I have written code like this :

On 32-bit -
typedef unisgned long DWORD;
string length is 50;
DWORD len = wcslen(string);

But on 64-bit getting porting error -Conversion of 64 bit type value to "int" causes truncation

I made changes into the code like:
#ifdef _LP64
typedef unisgned int DWORD;
#else
typedef unisgned long DWORD;
#endif

Still it is giving error like "Conversion of 64 bit type value to "unsigned" causes truncation"

instead of int - unsigned is given in error.

Any pointers will be helpful.

Again, The problem with casting signed int into unsigned int is that this discards the "sign" bit (it's a tad bit more complicated than that). For some reason, size_t appears to be signed, and therefore can be negative. You cannot convert a negative number of any size into a bigger integer that is non-negative. (It can be done, but you risk "losing information"). So either ignore the warning, or make size_t unsigned, or make DWORD signed.

I have '.c' files. I wanted to build this for 64-bit platform.
I am using gcc to compile these .c files.
But if i use
gcc +w2 -D_REENTRANT -D_POSIX_C_SOURCE=199506L -D__EXTENSIONS__ -xarch=v9 -O2 -g -Wall -fno-strict-aliasing

To find out the warnings for truncation or porting.

It is giving me error as :
gcc: +w2: No such file or directory
gcc: language xarch=v9 not recognized


Can you please tell me the what is the other option can be used with gcc to build the code 64-bit compatible?

I am trying to use lint with .c files.
Let me know that if i am giving command like:

>> lint test.c


But test.c has included other user define header files. So How can I get reference to the header file while executing lint command.
I am getting error for header file as:
" cannot find include file"

How to specify the path of header file with the lint command?

Please respond to my query via private message.

I do not currently have lint on any of my systems. It is largely obsolete, in my opinion, by GCC's -Wall -pedantic. What does "man lint" tell you?