http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60475
--- Comment #3 from zosrothko at orange dot fr --- (In reply to Jonathan Wakely from comment #1) > (In reply to zosrothko from comment #0) > > $ gcc -xc++ -std=gnu++11 -o foo foo.c > > To link a C++ program you should explicitly link to the C++ runtime library, > using -lstdc++, or use g++ which does that automatically. > > (If your source file is C++ why is your file called foo.c instead of having > a C++ file extension?) because the story starts with a C program. Here the point: there is a problem with the declaration of snprintf with the std=c++11 in c++. Thus I started to test first with gcc and the std(c90, c89), then I forget to switch to g++ for testing the std(c++11,gnu++1). Thus as the gcc -xc++ -std=gnu++11 -c foo.c was compiling without error, I just wanted to execute it. My mistake.... Sorry for the noise...By the way, the error on snprintf not declared is invalid. $ gcc -xc -std=c90 -c foo.c $ gcc -xc -std=c89 -c foo.c $ $ gcc -xc++ -std=c++11 -c foo.c foo.c: In function 'int main()': foo.c:5:27: error: 'snprintf' was not declared in this scope snprintf(buf, 10, "%i", 0); $ $ gcc -xc++ -std=gnu++11 -c foo.c $
