Fix fenv.h fallback returns (bug 14027).

diff --git a/ChangeLog b/ChangeLog
index 50c27f7..2035e58 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2012-04-27  Joseph Myers  <joseph@codesourcery.com>
+
+       [BZ #14027]
+       * math/fclrexcpt.c (__feclearexcept): Return zero if nothing needs
+       to be done.
+       * math/fraiseexcpt.c (__feraiseexcept): Likewise.
+       * math/fsetexcptflg.c (__fesetexceptflag): Likewise.
+
 2012-04-26  Joseph Myers  <joseph@codesourcery.com>
 
        * sysdeps/unix/i386/brk.S: Remove file.

diff --git a/NEWS b/NEWS
index 00620ff..cd52364 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -22,7 +22,7 @@ Version 2.16
   13846, 13851, 13852, 13854, 13871, 13872, 13873, 13879, 13883, 13886,
   13892, 13895, 13908, 13910, 13911, 13912, 13913, 13915, 13916, 13917,
   13918, 13919, 13920, 13921, 13926, 13927, 13928, 13938, 13963, 13967,
-  13970, 13973
+  13970, 13973, 14027
 
 * ISO C11 support:
 

diff --git a/math/fclrexcpt.c b/math/fclrexcpt.c
index 27e9bd0..dcdcfbb 100644 (file)
--- a/math/fclrexcpt.c
+++ b/math/fclrexcpt.c
@@ -1,5 +1,5 @@
 /* Clear given exceptions in current floating-point environment.
-   Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1997-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -23,8 +23,8 @@
 int
 __feclearexcept (int excepts)
 {
-  /* This always fails.  */
-  return 1;
+  /* This always fails unless nothing needs to be done.  */
+  return (excepts != 0);
 }
 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
 strong_alias (__feclearexcept, __old_feclearexcept)

diff --git a/math/fraiseexcpt.c b/math/fraiseexcpt.c
index cb752df..83a488b 100644 (file)
--- a/math/fraiseexcpt.c
+++ b/math/fraiseexcpt.c
@@ -1,5 +1,5 @@
 /* Raise given exceptions.
-   Copyright (C) 1997, 1999, 2000, 2002 Free Software Foundation, Inc.
+   Copyright (C) 1997-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -23,8 +23,8 @@
 int
 __feraiseexcept (int excepts)
 {
-  /* This always fails.  */
-  return 1;
+  /* This always fails unless nothing needs to be done.  */
+  return (excepts != 0);
 }
 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
 strong_alias (__feraiseexcept, __old_feraiseexcept)

diff --git a/math/fsetexcptflg.c b/math/fsetexcptflg.c
index 3f6ac98..7d27d7f 100644 (file)
--- a/math/fsetexcptflg.c
+++ b/math/fsetexcptflg.c
@@ -1,5 +1,5 @@
 /* Set floating-point environment exception handling.
-   Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1997-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -23,8 +23,8 @@
 int
 __fesetexceptflag (const fexcept_t *flagp, int excepts)
 {
-  /* This always fails.  */
-  return 1;
+  /* This always fails unless nothing needs to be done.  */
+  return (excepts != 0);
 }
 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
 strong_alias (__fesetexceptflag, __old_fesetexceptflag)