[Rd] g++ 4.3 warning: deprecated conversion from string constant to ‘char*’ 3DIn-Reply-To: <47F4EE2E.6090407 at msu.edu>

[Kurt Hornik]

>>>>> Andrew Finley writes:

> 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?

Does this persist in a current version of 2.7.0 alpha?

Brian recently changed R_ext/Print.h to

-void Rprintf(char *, ...);
-void REprintf(char *, ...);
+void Rprintf(const char *, ...);
+void REprintf(const char *, ...);

to deal with this issue.

Best
-k

> 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

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