I've just built zile-2.3.7 on Red Hat 4 AMD64, and got this test
failure report:
astr test successful.
==13355== Invalid free() / delete / delete[]
==13355== at 0x49057C5: free (vg_replace_malloc.c:233)
==13355== by 0x357E1FE25F: free_mem (in /lib64/tls/libc-2.3.4.so)
==13355== by 0x357E1FDCE1: __libc_freeres (in /lib64/tls/libc-2.3.4.so)
==13355== by 0x48016CE: _vgnU_freeres (vg_preloaded.c:60)
==13355== by 0x357E130CEA: exit (in /lib64/tls/libc-2.3.4.so)
==13355== by 0x357E11C411: (below main) (in /lib64/tls/libc-2.3.4.so)
==13355== Address 0x4902EA8 is not stack'd, malloc'd or (recently) free'd