From e59c94fa0e2871bdfcc363899e3be376c0def770 Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Tue, 1 Dec 2015 14:59:38 -0500 Subject: math: add LDBL_CLASSIFY_COMPAT support If a platform does not define "long-double-fcts = yes" in its Makefiles and it does define __NO_LONG_DOUBLE_MATH in its installed headers, it will currently create exported symbols for __finitel, __isinfl, and __isnanl that can't be reached from userspace by correct use of the finite(), isinf(), or isnan() macros in . To avoid this situation, by default for such platforms we now no longer export these symbols, thus causing appropriate link-time errors. However, for platforms that previously exported these symbols, we continue to do so as compat symbols; this is enabled by adding LDBL_CLASSIFY_COMPAT to math_private.h for the platform. For tile, remove the now-unnecessary exports of those functions from libc and libm. --- sysdeps/ieee754/dbl-64/s_isnan.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'sysdeps/ieee754/dbl-64/s_isnan.c') diff --git a/sysdeps/ieee754/dbl-64/s_isnan.c b/sysdeps/ieee754/dbl-64/s_isnan.c index 5d9f31be20..2174d988d8 100644 --- a/sysdeps/ieee754/dbl-64/s_isnan.c +++ b/sysdeps/ieee754/dbl-64/s_isnan.c @@ -21,6 +21,7 @@ static char rcsid[] = "$NetBSD: s_isnan.c,v 1.8 1995/05/10 20:47:36 jtc Exp $"; #include #include +#include #undef __isnan int @@ -36,6 +37,8 @@ __isnan (double x) hidden_def (__isnan) weak_alias (__isnan, isnan) #ifdef NO_LONG_DOUBLE -strong_alias (__isnan, __isnanl) +# if defined LDBL_CLASSIFY_COMPAT && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_23) +compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0); +# endif weak_alias (__isnan, isnanl) #endif -- cgit 1.4.1