- dnl the compiler will compile the version with size_t
- dnl even if the real type of the last parameter is int
- dnl but it should give at least a warning about
- dnl converting between incompatible pointer types, so
- dnl try to use it to get the correct behaviour at
- dnl least with gcc (otherwise we'd always use size_t)
- CFLAGS_OLD="$CFLAGS"
- if test "$GCC" = yes ; then
- CFLAGS="-Werror $CFLAGS"
- fi
-
+ dnl Note that the rules for compatibility of pointers
+ dnl are somewhat different between C and C++, so code
+ dnl that fails in C++ may not even give a warning about
+ dnl converting between incompatible pointer types in C.
+ dnl So this test needs to be done in C++ mode.
+ AC_LANG_PUSH(C++)