From finleya at msu.edu  Thu Apr  3 16:48:14 2008
From: finleya at msu.edu (Andrew Finley)
Date: Thu, 03 Apr 2008 10:48:14 -0400
Subject: [Rd] =?windows-1252?q?g++_4=2E3__warning=3A_deprecated_conversion?=
 =?windows-1252?q?_from_string_constant_to_=91char*=92?=
Message-ID: <47F4EE2E.6090407@msu.edu>

Hello,
I've noticed that with g++ 4.3 I get the following "warning: deprecated 
conversion from string constant to ?char*?" when I call e.g., 
Rprintf("Hello world"); or when I try to define a const char e.g., char 
lower = 'L';

I am wrapping the c++ code in extern "C" {}. This seems to be something 
new with g++ 4.3, because the same code compiled without warnings with 
previous versions.

Has anyone else had theses warnings? Any fixes?

I have included some example output below. Each warning corresponds to 
an Rprintf call.


andy at friend:~/Rdevel/tmp$ R CMD SHLIB splmDIC.cpp covmodel.cpp util.cpp
g++-4.3 -I/usr/local/lib/R/include -I/usr/local/lib/R/include 
-I/usr/local/include    -fpic  -g -O2 -c splmDIC.cpp -o splmDIC.o
splmDIC.cpp: In function ?SEXPREC* splmDIC(SEXPREC*, SEXPREC*, SEXPREC*, 
SEXPREC*, SEXPREC*, SEXPREC*, SEXPREC*, SEXPREC*, SEXPREC*, SEXPREC*, 
SEXPREC*, SEXPREC*, SEXPREC*, SEXPREC*, SEXPREC*, SEXPREC*, SEXPREC*, 
SEXPREC*, SEXPREC*, SEXPREC*, SEXPREC*, SEXPREC*, SEXPREC*)?:
splmDIC.cpp:163: warning: deprecated conversion from string constant to 
?char*?
splmDIC.cpp:164: warning: deprecated conversion from string constant to 
?char*?
splmDIC.cpp:165: warning: deprecated conversion from string constant to 
?char*?
splmDIC.cpp:430: warning: deprecated conversion from string constant to 
?char*?
splmDIC.cpp:431: warning: deprecated conversion from string constant to 
?char*?
g++-4.3 -shared -L/usr/local/lib -o splmDIC.so splmDIC.o covmodel.o 
util.o -L/usr/local/lib/R/lib -lRlapack -L/usr/local/lib/R/lib -lRblas 
-L/usr/lib/gcc/i486-linux-gnu/3.4.6 -lg2c -lm -lgcc_s


Thanks for your time.
Kind regards-
Andy



-- 
Andrew Finley, PhD
Natural Resources Building
Michigan State University
East Lansing, MI 48824-1222
Phone: 517-432-7219
Fax: 517-432-1143
web: http://blue.for.msu.edu



[Rd] =?windows-1252?q?g++_4=2E3__warning=3A_deprecated_conversion?= =?windows-1252?q?_from_string_constant_to_=91char*=92?=
Andrew Finley