• Zorran <zorran tut.by> Feb 01 2009
• Extrawurst <spam extrawurst.org> Feb 01 2009
• "Simen Kjaeraas" <simen.kjaras gmail.com> Feb 01 2009
• Don <nospam nospam.com> Feb 01 2009

Zorran <zorran tut.by> writes:

This code crash D1 compiler (v1.039)

============
import std.stdio;

void main()
{
	string ss="sample";
	printf("%s", cast(char*)(ss+"\0") );
}
===========

Extrawurst <spam extrawurst.org> writes:

Zorran wrote:
 This code crash D1 compiler (v1.039)
 
 ============
 import std.stdio;
 
 void main()
 {
 	string ss="sample";
 	printf("%s", cast(char*)(ss+"\0") );
 }
 ===========


do u mean it actually crashes dmd at compile time or do u mean your 
application carshes at runtime?

try:

void foo(char[] ss)
{
     printf("my string is: %.*s\n", ss);
}

documented under: http://www.digitalmars.com/d/2.0/interfaceToC.html 
("Calling printf()")

"Simen Kjaeraas" <simen.kjaras gmail.com> writes:

On Sun, 01 Feb 2009 13:01:09 +0100, Zorran <zorran tut.by> wrote:

 This code crash D1 compiler (v1.039)

 ============
 import std.stdio;

 void main()
 {
 	string ss="sample";
 	printf("%s", cast(char*)(ss+"\0") );
 }
 ===========


Indeed it does. Now of course, ss + "\0" makes no sense, but the compiler still
should not crash.

To correctly concatenate two strings, use the ~ operator. Also, to convert a D
string to a C string (char *), use toStringz, which automagically adds the
terminating null. Your program would then look like this:

void main() {
	string ss = "sample";
	printf("%s", toStringz(ss));
}

--
Simen

Don <nospam nospam.com> writes:

Simen Kjaeraas wrote:
 On Sun, 01 Feb 2009 13:01:09 +0100, Zorran <zorran tut.by> wrote:
 
 This code crash D1 compiler (v1.039)

 ============
 import std.stdio;

 void main()
 {
     string ss="sample";
     printf("%s", cast(char*)(ss+"\0") );
 }
 ===========


 Indeed it does. Now of course, ss + "\0" makes no sense, but the 
 compiler still should not crash.
 
 To correctly concatenate two strings, use the ~ operator. Also, to 
 convert a D string to a C string (char *), use toStringz, which 
 automagically adds the terminating null. Your program would then look 
 like this:
 
 void main() {
     string ss = "sample";
     printf("%s", toStringz(ss));
 }
 
 -- 
 Simen