diff options
Diffstat (limited to 'resolv/res_libc.c')
| -rw-r--r-- | resolv/res_libc.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/resolv/res_libc.c b/resolv/res_libc.c index 60f7febf05..b1132b0ffd 100644 --- a/resolv/res_libc.c +++ b/resolv/res_libc.c @@ -31,8 +31,22 @@ extern __thread struct __res_state __libc_res __attribute__ ((alias ("_res"))) attribute_hidden; # define _res __libc_res #else -/* The resolver state for use by single-threaded programs. */ -struct __res_state _res; +/* The resolver state for use by single-threaded programs. + + This differs from a plain uninitialized definition in that it doesn't + create a common definition, but a plain symbol that resides in .bss, + which can have an alias. */ +struct __res_state _res __attribute__ ((section (".bss"))); + +/* This alias is needed by libpthread. */ +strong_alias (_res, __libc_res) + +/* We declare this with compat_symbol so that it's not + visible at link time. Programs must use the accessor functions. */ +# if defined HAVE_ELF && defined SHARED && defined DO_VERSIONING +# include <shlib-compat.h> +compat_symbol (libc, _res, _res, GLIBC_2_0); +# endif #endif /* This function is used to access the resolver state in |