[Bug c++/17505] New: <cmath> calls acosf(), ceilf(), and other functions missing from system libraries

["papadopo at shfj dot cea dot fr" <gcc-bugzilla at gcc dot gnu dot org>]

Hi,

The following doesn't link on Solaris 8:
	$ cat > foo.cc
	#include <cmath>
	int main() {
	    float f = 0.0;
	    f = std::acos(f);
	}
	$ g++ foo.cc
/tmp/ccEWrnML.o(.gnu.linkonce.t._ZSt4acosf+0xc): In function `std::acos(float)':
: undefined reference to `acosf'
	$ 

While the following does link on the same Solaris 8:
	$ cat > foo.cc
	#include <cmath>
	int main() {
	    float f = 0.0;
	    f = ::acos(f);
	}
	$ g++ foo.cc
	$ 

This looks like a regression, I am able to reproduce the problem with gcc 3.4.2
and 3.4.1, but not gcc 3.3.4.

Maybe it is related to this paragraph in the release notes:
	Many C math library functions are now recognized
	as built-ins and optimized.

-- 
           Summary: <cmath> calls acosf(), ceilf(), and other functions
                    missing from system libraries
           Product: gcc
           Version: 3.4.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: papadopo at shfj dot cea dot fr
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: sparc-sun-solaris2.8
  GCC host triplet: sparc-sun-solaris2.8
GCC target triplet: sparc-sun-solaris2.8


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17505