digitalmars.D - Weird bug

kinghajj (35/35) Nov 02 2004 I've written a rot13 conversion function.

Regan Heath (8/44) Nov 02 2004 No, but I have another clue, changin it to:

kinghajj (2/51) Nov 02 2004

Derek Parnell (6/64) Nov 02 2004 Changing 'char' to 'int' also causes your original code to work.

kinghajj (15/20) Nov 02 2004 OK, I cleaned-up my code:

Walter (1/1) Nov 03 2004 It's definitely a compiler bug.

Walter (1/1) Nov 03 2004 And I have it fixed now. Thanks!

kinghajj (3/4) Nov 03 2004 Cool, and thanks!

Walter (4/11) Nov 03 2004 You can workaround for the time being by making it an int parameter, or

kinghajj <kinghajj_member pathlink.com> writes:

I've written a rot13 conversion function.

/*
Produces the rot13 of one letter.
*/
char rot13_c(char ret)
{
if(ret > 'A'-1 && ret < 'N')
{ret += 13;}
else if(ret > 'M' && ret < 'Z'+1)
{ret -= 13;}
else if(ret > 'a'-1 && ret < 'n')
{ret += 13;}
else if(ret > 'm' && ret < 'z'+1)
{ret -= 13;}

return ret;
}

For some reason, it doesn't work unless I add a "printf()" statement between the
final "else if" clause and the return.

/*
Produces the rot13 of one letter.
*/
char rot13_c(char ret)
{
if(ret > 'A'-1 && ret < 'N')
{ret += 13;}
else if(ret > 'M' && ret < 'Z'+1)
{ret -= 13;}
else if(ret > 'a'-1 && ret < 'n')
{ret += 13;}
else if(ret > 'm' && ret < 'z'+1)
{ret -= 13;}
printf("");
return ret;
}

Can anyone explain why this is happening??

Nov 02 2004

Regan Heath <regan netwin.co.nz> writes:

On Wed, 3 Nov 2004 00:25:34 +0000 (UTC), kinghajj 
<kinghajj_member pathlink.com> wrote:
 I've written a rot13 conversion function.

 /*
 Produces the rot13 of one letter.
 */
 char rot13_c(char ret)
 {
 if(ret > 'A'-1 && ret < 'N')
 {ret += 13;}
 else if(ret > 'M' && ret < 'Z'+1)
 {ret -= 13;}
 else if(ret > 'a'-1 && ret < 'n')
 {ret += 13;}
 else if(ret > 'm' && ret < 'z'+1)
 {ret -= 13;}

 return ret;
 }

 For some reason, it doesn't work unless I add a "printf()" statement 
 between the
 final "else if" clause and the return.

 /*
 Produces the rot13 of one letter.
 */
 char rot13_c(char ret)
 {
 if(ret > 'A'-1 && ret < 'N')
 {ret += 13;}
 else if(ret > 'M' && ret < 'Z'+1)
 {ret -= 13;}
 else if(ret > 'a'-1 && ret < 'n')
 {ret += 13;}
 else if(ret > 'm' && ret < 'z'+1)
 {ret -= 13;}
 printf("");
 return ret;
 }

 Can anyone explain why this is happening??

No, but I have another clue, changin it to:

   char rot13_c(inout char ret)

causes it to start working also.

Regan

-- 
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/

Nov 02 2004

kinghajj <kinghajj_member pathlink.com> writes:

huh... that's strange. But, it works for me to.

In article <opsgu5capg5a2sq9 digitalmars.com>, Regan Heath says...
On Wed, 3 Nov 2004 00:25:34 +0000 (UTC), kinghajj 
<kinghajj_member pathlink.com> wrote:
 I've written a rot13 conversion function.

 /*
 Produces the rot13 of one letter.
 */
 char rot13_c(char ret)
 {
 if(ret > 'A'-1 && ret < 'N')
 {ret += 13;}
 else if(ret > 'M' && ret < 'Z'+1)
 {ret -= 13;}
 else if(ret > 'a'-1 && ret < 'n')
 {ret += 13;}
 else if(ret > 'm' && ret < 'z'+1)
 {ret -= 13;}

 return ret;
 }

 For some reason, it doesn't work unless I add a "printf()" statement 
 between the
 final "else if" clause and the return.

 /*
 Produces the rot13 of one letter.
 */
 char rot13_c(char ret)
 {
 if(ret > 'A'-1 && ret < 'N')
 {ret += 13;}
 else if(ret > 'M' && ret < 'Z'+1)
 {ret -= 13;}
 else if(ret > 'a'-1 && ret < 'n')
 {ret += 13;}
 else if(ret > 'm' && ret < 'z'+1)
 {ret -= 13;}
 printf("");
 return ret;
 }

 Can anyone explain why this is happening??

No, but I have another clue, changin it to:

   char rot13_c(inout char ret)

causes it to start working also.

Regan

-- 
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/

Nov 02 2004

Derek Parnell <derek psych.ward> writes:

On Wed, 3 Nov 2004 03:05:43 +0000 (UTC), kinghajj wrote:

 huh... that's strange. But, it works for me to.
 
 In article <opsgu5capg5a2sq9 digitalmars.com>, Regan Heath says...
On Wed, 3 Nov 2004 00:25:34 +0000 (UTC), kinghajj 
<kinghajj_member pathlink.com> wrote:
 I've written a rot13 conversion function.

 /*
 Produces the rot13 of one letter.
 */
 char rot13_c(char ret)
 {
 if(ret > 'A'-1 && ret < 'N')
 {ret += 13;}
 else if(ret > 'M' && ret < 'Z'+1)
 {ret -= 13;}
 else if(ret > 'a'-1 && ret < 'n')
 {ret += 13;}
 else if(ret > 'm' && ret < 'z'+1)
 {ret -= 13;}

 return ret;
 }

 For some reason, it doesn't work unless I add a "printf()" statement 
 between the
 final "else if" clause and the return.

 /*
 Produces the rot13 of one letter.
 */
 char rot13_c(char ret)
 {
 if(ret > 'A'-1 && ret < 'N')
 {ret += 13;}
 else if(ret > 'M' && ret < 'Z'+1)
 {ret -= 13;}
 else if(ret > 'a'-1 && ret < 'n')
 {ret += 13;}
 else if(ret > 'm' && ret < 'z'+1)
 {ret -= 13;}
 printf("");
 return ret;
 }

 Can anyone explain why this is happening??

No, but I have another clue, changin it to:

   char rot13_c(inout char ret)

causes it to start working also.

Regan

-- 
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/


Changing 'char' to 'int' also causes your original code to work.

-- 
Derek
Melbourne, Australia
3/11/2004 3:43:05 PM

Nov 02 2004

kinghajj <kinghajj_member pathlink.com> writes:

In article <cm9nll$1bao$1 digitaldaemon.com>, Derek Parnell says...
Changing 'char' to 'int' also causes your original code to work.

-- 
Derek
Melbourne, Australia
3/11/2004 3:43:05 PM

OK, I cleaned-up my code:

char rot13_c(int ret)
{
if(ret >= 'A' && ret <= 'M')
ret += 13;
else if(ret >= 'N' && ret <= 'Z')
ret -= 13;
else if(ret >= 'a' && ret <= 'm')
ret += 13;
else if(ret >= 'n' && ret <= 'z')
ret -= 13;

return ret;
}

still, I don't see why 'ret' needs to be int, but it works just fine.

Nov 02 2004

"Walter" <newshound digitalmars.com> writes:

It's definitely a compiler bug.

Nov 03 2004

"Walter" <newshound digitalmars.com> writes:

And I have it fixed now. Thanks!

Nov 03 2004

kinghajj <kinghajj_member pathlink.com> writes:

In article <cmbbk8$7q8$1 digitaldaemon.com>, Walter says...
And I have it fixed now. Thanks!

Cool, and thanks!
I guess I'll have to wait for v. 0.106

Nov 03 2004

"Walter" <newshound digitalmars.com> writes:

"kinghajj" <kinghajj_member pathlink.com> wrote in message
news:cmc012$1c7v$1 digitaldaemon.com...
 In article <cmbbk8$7q8$1 digitaldaemon.com>, Walter says...
And I have it fixed now. Thanks!

 Cool, and thanks!
 I guess I'll have to wait for v. 0.106

You can workaround for the time being by making it an int parameter, or
inserting a call to printf("");

Nov 03 2004

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