[Bug bootstrap/50167] New: gmp memory functions are extern "C" (graphite)

[marc.glisse at normalesup dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50167

             Bug #: 50167
           Summary: gmp memory functions are extern "C" (graphite)
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: marc.gli...@normalesup.org


Hello,

with gcc moving to C++, a few things need adapting. In particular, when asking
for the gmp memory functions, this:

      void (*gmp_free) (void *, size_t);
      mp_get_memory_functions (NULL, NULL, &gmp_free);

becomes wrong. One should have somewhere (protected by tests on __cplusplus
since we are still building with C compilers):
extern "C" {
  typedef void (*mytype) (void *, size_t);
}

And then:

      mytype gmp_free;
      mp_get_memory_functions (NULL, NULL, &gmp_free);

g++ can't see the difference (yet? see Bug 2316), but some other compilers can
(sunpro), and we want other C++ compilers to be usable for stage1.

This code appears in 2 files:
./gcc/graphite-ppl.c
./gcc/graphite-interchange.c