locale: Use compat_symbol_reference in _nl_postload_ctype

These symbol usages are not definitions, so compat_symbol_reference is
more appropriate than compat_symbol.  compat_symbol_reference is also
safe to emit multiple times (in case the inline assembly is
duplicated; this is possible because it is nested in a function).
compat_symbol does not necessarily have this property because it is
intended to provide a symbol definition.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

diff --git a/locale/lc-ctype.c b/locale/lc-ctype.c
index 1db0605..7c97480 100644 (file)
--- a/locale/lc-ctype.c
+++ b/locale/lc-ctype.c
@@ -93,12 +93,14 @@ _nl_postload_ctype (void)
      We need those relocations so that a versioned definition with a COPY
      reloc in an executable will override the libc.so definition.  */
 
-compat_symbol (libc, __ctype_b, __ctype_b, GLIBC_2_0);
-compat_symbol (libc, __ctype_tolower, __ctype_tolower, GLIBC_2_0);
-compat_symbol (libc, __ctype_toupper, __ctype_toupper, GLIBC_2_0);
-compat_symbol (libc, __ctype32_b, __ctype32_b, GLIBC_2_0);
-compat_symbol (libc, __ctype32_tolower, __ctype32_tolower, GLIBC_2_2);
-compat_symbol (libc, __ctype32_toupper, __ctype32_toupper, GLIBC_2_2);
+compat_symbol_reference (libc, __ctype_b, __ctype_b, GLIBC_2_0);
+compat_symbol_reference (libc, __ctype_tolower, __ctype_tolower, GLIBC_2_0);
+compat_symbol_reference (libc, __ctype_toupper, __ctype_toupper, GLIBC_2_0);
+compat_symbol_reference (libc, __ctype32_b, __ctype32_b, GLIBC_2_0);
+compat_symbol_reference (libc, __ctype32_tolower, __ctype32_tolower,
+                         GLIBC_2_2);
+compat_symbol_reference (libc, __ctype32_toupper, __ctype32_toupper,
+                        GLIBC_2_2);
 
   __ctype_b = current (uint16_t, CLASS, 128);
   __ctype_toupper = current (int32_t, TOUPPER, 128);