Re: \n cause error.

----- Original Message ----- 
From: "Xiao Yafeng" <[email protected]>
To: "inline" <[email protected]>; "Sisyphus" <[email protected]>
Sent: Friday, July 13, 2012 11:00 PM
Subject: \n cause error.


> Hi all,
>
> I've found a bug(maybe) in Inline C while dig wchar_t. see
> http://www.perlmonks.org/?node_id=981427
>
> I made a small inline c snippet as rob's suggestion, but throw an error:
> ....
> l\lib\CORE"   test_list_pl_f553.c
> test_list_pl_f553.xs: In function `GetProcessList':
> test_list_pl_f553.xs:29: error: missing terminating " character
> test_list_pl_f553.xs:30: error: missing terminating " character
> test_list_pl_f553.xs:35: error: syntax error before '}' token
> dmake.exe:  Error code 129, while making 'test_list_pl_f553.o'
>
>
> I've found this error is because inline can't treat \n in printf statement
> correctly, In xs file,
> printf("blah blah blah %s \n", sz) will be translated into
>
> printf("blah blah blah %s
> ", sz)                           #two lines!!
>
>
> a bug?

Funnily enough, I struck the same thing when playing around with another 
Inline::C script today.
It happens when you use double quotes instead of single quotes with the 
heredoc operator. (Is "heredoc operator" the right term ?)

Instead of :

use Inline C => <<"EOC"

you want:

use Inline C => <<'EOC'

The behaviour you observed seems to be standard perl behaviour, so I don't 
think it's a bug:

############################
C:\_32\pscrpt>type try.pl

use warnings;

print <<"EOC";
 p"\n"
EOC

print <<'EOC';
 p"\n"
EOC

C:\_32\pscrpt>perl try.pl
 p"
"
 p"\n"

C:\_32\pscrpt>
############################

Cheers,
Rob