On 2016-08-16 18:33, Robert Haas wrote:
> It wouldn't be that much work to maintain, either: we'd
> just set up some buildfarm members that compiled using C++ and when
> they turned red, we'd go fix it.
I think that there exist subtle differences between C and C++ that
without compile-time diagnostic could potentially lead to different
run-time behavior. As an artificial example:
$ cat ./test.c
#include <stdio.h>
int main(void) {FILE *f = fopen("test.bin", "w");if (f == NULL) return 1;fwrite("1", sizeof '1', 1,
f);fclose(f);return0;
}
$ clang ./test.c -o test
$ ./test
$ hexdump test.bin
0000000 0031 0000
0000004
$ clang++ ./test.c -o test
clang-3.9: warning: treating 'c' input as 'c++' when in C++ mode, this
behavior is deprecated
$ ./test
$ hexdump test.bin
0000000 0031
0000001
