Fix libm fesetenv namespace (bug 17748).

Continuing the fixes for C90 libm functions calling C99 fe* functions,
this patch fixes the case of fesetenv by making it a weak alias of
__fesetenv and making the affected code (including various copies of
feupdateenv which also gets called from C90 functions) call
__fesetenv.

Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch).  Also tested for ARM
(soft-float) that fesetenv failures disappear from the linknamespace
test results (fsetround and feupdateenv remain to be addressed to
complete fixing bug 17748).

	[BZ #17748]
	* include/fenv.h (__fesetenv): Use libm_hidden_proto.
	* math/fesetenv.c (__fesetenv): Use libm_hidden_def.
	* sysdeps/aarch64/fpu/fesetenv.c (fesetenv): Rename to __fesetenv
	and define as weak alias of __fesetenv.  Use libm_hidden_weak.
	* sysdeps/alpha/fpu/fesetenv.c (__fesetenv): Use libm_hidden_def.
	* sysdeps/arm/fesetenv.c (fesetenv): Rename to __fesetenv and
	define as weak alias of __fesetenv.  Use libm_hidden_weak.
	* sysdeps/hppa/fpu/fesetenv.c (fesetenv): Likewise.
	* sysdeps/i386/fpu/fesetenv.c (__fesetenv): Use libm_hidden_def.
	* sysdeps/ia64/fpu/fesetenv.c (fesetenv): Rename to __fesetenv and
	define as weak alias of __fesetenv.  Use libm_hidden_weak.
	* sysdeps/m68k/fpu/fesetenv.c (__fesetenv): Use libm_hidden_def.
	* sysdeps/mips/fpu/fesetenv.c (fesetenv): Rename to __fesetenv and
	define as weak alias of __fesetenv.  Use libm_hidden_weak.
	* sysdeps/powerpc/fpu/fesetenv.c (__fesetenv): Use
	libm_hidden_def.
	* sysdeps/powerpc/nofpu/fesetenv.c (__fesetenv): Likewise.
	* sysdeps/powerpc/powerpc32/e500/nofpu/fesetenv.c (__fesetenv):
	Likewise.
	* sysdeps/s390/fpu/fesetenv.c (fesetenv): Rename to __fesetenv and
	define as weak alias of __fesetenv.  Use libm_hidden_weak.
	* sysdeps/sh/sh4/fpu/fesetenv.c (fesetenv): Likewise.
	* sysdeps/sparc/fpu/fesetenv.c (__fesetenv): Use libm_hidden_def.
	* sysdeps/tile/math_private.h (__fesetenv): New inline function.
	* sysdeps/x86_64/fpu/fesetenv.c (fesetenv): Rename to __fesetenv
	and define as weak alias of __fesetenv.  Use libm_hidden_weak.
	* sysdeps/generic/math_private.h (default_libc_fesetenv): Use
	__fesetenv instead of fesetenv.
	(libc_feresetround_noex_ctx): Likewise.
	* sysdeps/alpha/fpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/hppa/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/i386/fpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/ia64/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/m68k/fpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/mips/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/powerpc/nofpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/powerpc/powerpc32/e500/nofpu/feupdateenv.c
	(__feupdateenv): Likewise.
	* sysdeps/s390/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/sh/sh4/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/sparc/fpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/x86_64/fpu/feupdateenv.c (__feupdateenv): Likewise.

29 files changed, 54 insertions, 30 deletions

diff --git a/sysdeps/aarch64/fpu/fesetenv.c b/sysdeps/aarch64/fpu/fesetenv.c
index fef5f84185..f47115fd91 100644
--- a/sysdeps/aarch64/fpu/fesetenv.c
+++ b/sysdeps/aarch64/fpu/fesetenv.c
@@ -20,7 +20,7 @@
 #include <fpu_control.h>
 
 int
-fesetenv (const fenv_t *envp)
+__fesetenv (const fenv_t *envp)
 {
   fpu_control_t fpcr;
   fpu_control_t fpcr_new;
@@ -67,4 +67,6 @@ fesetenv (const fenv_t *envp)
 
   return 0;
 }
-libm_hidden_def (fesetenv)
+libm_hidden_def (__fesetenv)
+weak_alias (__fesetenv, fesetenv)
+libm_hidden_weak (fesetenv)
diff --git a/sysdeps/alpha/fpu/fesetenv.c b/sysdeps/alpha/fpu/fesetenv.c
index 02b79d58bd..c87a23c99e 100644
--- a/sysdeps/alpha/fpu/fesetenv.c
+++ b/sysdeps/alpha/fpu/fesetenv.c
@@ -52,5 +52,6 @@ strong_alias (__fesetenv, __old_fesetenv)
 compat_symbol (libm, __old_fesetenv, fesetenv, GLIBC_2_1);
 #endif
 
+libm_hidden_def (__fesetenv)
 libm_hidden_ver (__fesetenv, fesetenv)
 versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);
diff --git a/sysdeps/alpha/fpu/feupdateenv.c b/sysdeps/alpha/fpu/feupdateenv.c
index 063785b6e4..8b521454de 100644
--- a/sysdeps/alpha/fpu/feupdateenv.c
+++ b/sysdeps/alpha/fpu/feupdateenv.c
@@ -28,7 +28,7 @@ __feupdateenv (const fenv_t *envp)
   tmp = __ieee_get_fp_control ();
 
   /* Install new environment.  */
-  fesetenv (envp);
+  __fesetenv (envp);
 
   /* Raise the saved exception.  Incidently for us the implementation
      defined format of the values in objects of type fexcept_t is the
diff --git a/sysdeps/arm/fesetenv.c b/sysdeps/arm/fesetenv.c
index 3b79ea18ef..fc24e2f1f1 100644
--- a/sysdeps/arm/fesetenv.c
+++ b/sysdeps/arm/fesetenv.c
@@ -22,7 +22,7 @@
 
 
 int
-fesetenv (const fenv_t *envp)
+__fesetenv (const fenv_t *envp)
 {
   fpu_control_t fpscr, new_fpscr, updated_fpscr;
 
@@ -61,4 +61,6 @@ fesetenv (const fenv_t *envp)
 
   return 0;
 }
-libm_hidden_def (fesetenv)
+libm_hidden_def (__fesetenv)
+weak_alias (__fesetenv, fesetenv)
+libm_hidden_weak (fesetenv)
diff --git a/sysdeps/generic/math_private.h b/sysdeps/generic/math_private.h
index 3a080d8721..3d987383e9 100644
--- a/sysdeps/generic/math_private.h
+++ b/sysdeps/generic/math_private.h
@@ -462,7 +462,7 @@ default_libc_feholdexcept_setround (fenv_t *e, int r)
 static __always_inline void
 default_libc_fesetenv (fenv_t *e)
 {
-  (void) fesetenv (e);
+  (void) __fesetenv (e);
 }
 
 #ifndef libc_fesetenv
@@ -626,7 +626,7 @@ static __always_inline void
 libc_feresetround_noex_ctx (struct rm_ctx *ctx)
 {
   /* Restore exception flags and rounding mode.  */
-  fesetenv (&ctx->env);
+  __fesetenv (&ctx->env);
 }
 
 # define libc_feholdsetroundf_ctx libc_feholdsetround_ctx
diff --git a/sysdeps/hppa/fpu/fesetenv.c b/sysdeps/hppa/fpu/fesetenv.c
index 2d28446e12..5b33ad6102 100644
--- a/sysdeps/hppa/fpu/fesetenv.c
+++ b/sysdeps/hppa/fpu/fesetenv.c
@@ -22,7 +22,7 @@
 #include <fenv.h>
 
 int
-fesetenv (const fenv_t *envp)
+__fesetenv (const fenv_t *envp)
 {
   union { unsigned long long buf[4]; fenv_t env; } temp;
   unsigned long long *bufptr;
@@ -60,4 +60,6 @@ fesetenv (const fenv_t *envp)
   /* Success.  */
   return 0;
 }
-libm_hidden_def (fesetenv)
+libm_hidden_def (__fesetenv)
+weak_alias (__fesetenv, fesetenv)
+libm_hidden_weak (fesetenv)
diff --git a/sysdeps/hppa/fpu/feupdateenv.c b/sysdeps/hppa/fpu/feupdateenv.c
index 60c0f11611..e6a07c31f4 100644
--- a/sysdeps/hppa/fpu/feupdateenv.c
+++ b/sysdeps/hppa/fpu/feupdateenv.c
@@ -33,7 +33,7 @@ feupdateenv (const fenv_t *envp)
   /* Currently raised exceptions not cleared */
   temp.__status_word |= s.sw[0] & (FE_ALL_EXCEPT << 27);
   /* Install new environment.  */
-  fesetenv (&temp);
+  __fesetenv (&temp);
   /* Success.  */
   return 0;
 }
diff --git a/sysdeps/i386/fpu/fesetenv.c b/sysdeps/i386/fpu/fesetenv.c
index d692a9378f..9566e092ca 100644
--- a/sysdeps/i386/fpu/fesetenv.c
+++ b/sysdeps/i386/fpu/fesetenv.c
@@ -102,5 +102,6 @@ strong_alias (__fesetenv, __old_fesetenv)
 compat_symbol (libm, __old_fesetenv, fesetenv, GLIBC_2_1);
 #endif
 
+libm_hidden_def (__fesetenv)
 libm_hidden_ver (__fesetenv, fesetenv)
 versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);
diff --git a/sysdeps/i386/fpu/feupdateenv.c b/sysdeps/i386/fpu/feupdateenv.c
index c96708bc02..2f58ab39ff 100644
--- a/sysdeps/i386/fpu/feupdateenv.c
+++ b/sysdeps/i386/fpu/feupdateenv.c
@@ -38,7 +38,7 @@ __feupdateenv (const fenv_t *envp)
   temp = (temp | xtemp) & FE_ALL_EXCEPT;
 
   /* Install new environment.  */
-  fesetenv (envp);
+  __fesetenv (envp);
 
   /* Raise the saved exception.  Incidently for us the implementation
      defined format of the values in objects of type fexcept_t is the
diff --git a/sysdeps/ia64/fpu/fesetenv.c b/sysdeps/ia64/fpu/fesetenv.c
index f35f62c000..62152f5bd7 100644
--- a/sysdeps/ia64/fpu/fesetenv.c
+++ b/sysdeps/ia64/fpu/fesetenv.c
@@ -20,7 +20,7 @@
 #include <fenv.h>
 
 int
-fesetenv (const fenv_t *envp)
+__fesetenv (const fenv_t *envp)
 {
   fenv_t env;
 
@@ -38,4 +38,6 @@ fesetenv (const fenv_t *envp)
 
   return 0;
 }
-libm_hidden_def (fesetenv)
+libm_hidden_def (__fesetenv)
+weak_alias (__fesetenv, fesetenv)
+libm_hidden_weak (fesetenv)
diff --git a/sysdeps/ia64/fpu/feupdateenv.c b/sysdeps/ia64/fpu/feupdateenv.c
index 3047f91dca..c6415ed38b 100644
--- a/sysdeps/ia64/fpu/feupdateenv.c
+++ b/sysdeps/ia64/fpu/feupdateenv.c
@@ -29,7 +29,7 @@ feupdateenv (const fenv_t *envp)
   __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));
 
   /* Install new environment.  */
-  fesetenv (envp);
+  __fesetenv (envp);
 
   /* Raise the saved exceptions.  */
   __feraiseexcept ((int) (fpsr >> 13) & FE_ALL_EXCEPT);
diff --git a/sysdeps/m68k/fpu/fesetenv.c b/sysdeps/m68k/fpu/fesetenv.c
index dd642428db..5351ae99b5 100644
--- a/sysdeps/m68k/fpu/fesetenv.c
+++ b/sysdeps/m68k/fpu/fesetenv.c
@@ -70,5 +70,6 @@ strong_alias (__fesetenv, __old_fesetenv)
 compat_symbol (libm, __old_fesetenv, fesetenv, GLIBC_2_1);
 #endif
 
+libm_hidden_def (__fesetenv)
 libm_hidden_ver (__fesetenv, fesetenv)
 versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);
diff --git a/sysdeps/m68k/fpu/feupdateenv.c b/sysdeps/m68k/fpu/feupdateenv.c
index 5d733cb692..80bd59322e 100644
--- a/sysdeps/m68k/fpu/feupdateenv.c
+++ b/sysdeps/m68k/fpu/feupdateenv.c
@@ -29,7 +29,7 @@ __feupdateenv (const fenv_t *envp)
   fpsr &= FE_ALL_EXCEPT;
 
   /* Install new environment.  */
-  fesetenv (envp);
+  __fesetenv (envp);
 
   /* Raise the saved exception.  Incidently for us the implementation
      defined format of the values in objects of type fexcept_t is the
diff --git a/sysdeps/mips/fpu/fesetenv.c b/sysdeps/mips/fpu/fesetenv.c
index 1470e9ce40..e1629aa1e9 100644
--- a/sysdeps/mips/fpu/fesetenv.c
+++ b/sysdeps/mips/fpu/fesetenv.c
@@ -21,7 +21,7 @@
 #include <fpu_control.h>
 
 int
-fesetenv (const fenv_t *envp)
+__fesetenv (const fenv_t *envp)
 {
   fpu_control_t cw;
 
@@ -39,4 +39,6 @@ fesetenv (const fenv_t *envp)
   return 0;
 }
 
-libm_hidden_def (fesetenv)
+libm_hidden_def (__fesetenv)
+weak_alias (__fesetenv, fesetenv)
+libm_hidden_weak (fesetenv)
diff --git a/sysdeps/mips/fpu/feupdateenv.c b/sysdeps/mips/fpu/feupdateenv.c
index 4b3bda9388..2fe8ebe60c 100644
--- a/sysdeps/mips/fpu/feupdateenv.c
+++ b/sysdeps/mips/fpu/feupdateenv.c
@@ -30,7 +30,7 @@ feupdateenv (const fenv_t *envp)
   temp &= FE_ALL_EXCEPT;
 
   /* Install new environment.  */
-  fesetenv (envp);
+  __fesetenv (envp);
 
   /* Raise the safed exception.  Incidently for us the implementation
      defined format of the values in objects of type fexcept_t is the
diff --git a/sysdeps/powerpc/fpu/fesetenv.c b/sysdeps/powerpc/fpu/fesetenv.c
index 4ce41a6fd0..e7407cd31f 100644
--- a/sysdeps/powerpc/fpu/fesetenv.c
+++ b/sysdeps/powerpc/fpu/fesetenv.c
@@ -58,5 +58,6 @@ strong_alias (__fesetenv, __old_fesetenv)
 compat_symbol (libm, __old_fesetenv, fesetenv, GLIBC_2_1);
 #endif
 
+libm_hidden_def (__fesetenv)
 libm_hidden_ver (__fesetenv, fesetenv)
 versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);
diff --git a/sysdeps/powerpc/nofpu/fesetenv.c b/sysdeps/powerpc/nofpu/fesetenv.c
index e9ffb62955..0385d21d9b 100644
--- a/sysdeps/powerpc/nofpu/fesetenv.c
+++ b/sysdeps/powerpc/nofpu/fesetenv.c
@@ -42,5 +42,6 @@ strong_alias (__fesetenv, __old_fesetenv)
 compat_symbol (libm, __old_fesetenv, fesetenv, GLIBC_2_1);
 #endif
 
+libm_hidden_def (__fesetenv)
 libm_hidden_ver (__fesetenv, fesetenv)
 versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);
diff --git a/sysdeps/powerpc/nofpu/feupdateenv.c b/sysdeps/powerpc/nofpu/feupdateenv.c
index 3afe548efe..892e463727 100644
--- a/sysdeps/powerpc/nofpu/feupdateenv.c
+++ b/sysdeps/powerpc/nofpu/feupdateenv.c
@@ -31,7 +31,7 @@ __feupdateenv (const fenv_t *envp)
   saved_exceptions = __sim_exceptions_thread;
 
   /* Set environment.  */
-  fesetenv (envp);
+  __fesetenv (envp);
 
   /* Raise old exceptions.  */
   __sim_exceptions_thread |= saved_exceptions;
diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/fesetenv.c b/sysdeps/powerpc/powerpc32/e500/nofpu/fesetenv.c
index 2e3acbe238..f0ee1f0a5a 100644
--- a/sysdeps/powerpc/powerpc32/e500/nofpu/fesetenv.c
+++ b/sysdeps/powerpc/powerpc32/e500/nofpu/fesetenv.c
@@ -45,5 +45,6 @@ strong_alias (__fesetenv, __old_fesetenv)
 compat_symbol (libm, __old_fesetenv, fesetenv, GLIBC_2_1);
 #endif
 
+libm_hidden_def (__fesetenv)
 libm_hidden_ver (__fesetenv, fesetenv)
 versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);
diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/feupdateenv.c b/sysdeps/powerpc/powerpc32/e500/nofpu/feupdateenv.c
index 6132c7ed19..cb6a1487ac 100644
--- a/sysdeps/powerpc/powerpc32/e500/nofpu/feupdateenv.c
+++ b/sysdeps/powerpc/powerpc32/e500/nofpu/feupdateenv.c
@@ -28,7 +28,7 @@ __feupdateenv (const fenv_t *envp)
   exc = fegetenv_register () & SPEFSCR_ALL_EXCEPT;
 
   /* Install new environment.  */
-  fesetenv (envp);
+  __fesetenv (envp);
 
   /* Raise (if appropriate) saved exceptions. */
   __feraiseexcept_spe (exc);
diff --git a/sysdeps/s390/fpu/fesetenv.c b/sysdeps/s390/fpu/fesetenv.c
index d675febeca..467716a2ae 100644
--- a/sysdeps/s390/fpu/fesetenv.c
+++ b/sysdeps/s390/fpu/fesetenv.c
@@ -25,7 +25,7 @@
 #include <unistd.h>
 
 int
-fesetenv (const fenv_t *envp)
+__fesetenv (const fenv_t *envp)
 {
   fenv_t env;
 
@@ -47,4 +47,6 @@ fesetenv (const fenv_t *envp)
   /* Success.  */
   return 0;
 }
-libm_hidden_def (fesetenv)
+libm_hidden_def (__fesetenv)
+weak_alias (__fesetenv, fesetenv)
+libm_hidden_weak (fesetenv)
diff --git a/sysdeps/s390/fpu/feupdateenv.c b/sysdeps/s390/fpu/feupdateenv.c
index 662b0dfca1..957c8fe9ad 100644
--- a/sysdeps/s390/fpu/feupdateenv.c
+++ b/sysdeps/s390/fpu/feupdateenv.c
@@ -31,7 +31,7 @@ feupdateenv (const fenv_t *envp)
 
   /* Raise the exceptions since the last call to feholdenv  */
   /* re install saved environment.  */
-  fesetenv (envp);
+  __fesetenv (envp);
   __feraiseexcept ((int) temp);
 
   /* Success.  */
diff --git a/sysdeps/sh/sh4/fpu/fesetenv.c b/sysdeps/sh/sh4/fpu/fesetenv.c
index 846e819865..e4bfbe8c45 100644
--- a/sysdeps/sh/sh4/fpu/fesetenv.c
+++ b/sysdeps/sh/sh4/fpu/fesetenv.c
@@ -20,7 +20,7 @@
 #include <fpu_control.h>
 
 int
-fesetenv (const fenv_t *envp)
+__fesetenv (const fenv_t *envp)
 {
   if (envp == FE_DFL_ENV)
       _FPU_SETCW (_FPU_DEFAULT);
@@ -31,4 +31,6 @@ fesetenv (const fenv_t *envp)
     }
   return 0;
 }
-libm_hidden_def (fesetenv)
+libm_hidden_def (__fesetenv)
+weak_alias (__fesetenv, fesetenv)
+libm_hidden_weak (fesetenv)
diff --git a/sysdeps/sh/sh4/fpu/feupdateenv.c b/sysdeps/sh/sh4/fpu/feupdateenv.c
index 97d524bf6e..25729d9c1f 100644
--- a/sysdeps/sh/sh4/fpu/feupdateenv.c
+++ b/sysdeps/sh/sh4/fpu/feupdateenv.c
@@ -31,7 +31,7 @@ feupdateenv (const fenv_t *envp)
   /* Raise the saved exception. Incidently for us the implementation
     defined format of the values in objects of type fexcept_t is the
     same as the ones specified using the FE_* constants. */
-  fesetenv (envp);
+  __fesetenv (envp);
   __feraiseexcept ((int) temp);
 
   return 0;
diff --git a/sysdeps/sparc/fpu/fesetenv.c b/sysdeps/sparc/fpu/fesetenv.c
index 11954beeb2..3f89ab7411 100644
--- a/sysdeps/sparc/fpu/fesetenv.c
+++ b/sysdeps/sparc/fpu/fesetenv.c
@@ -50,5 +50,6 @@ strong_alias (__fesetenv, __old_fesetenv)
 compat_symbol (libm, __old_fesetenv, fesetenv, GLIBC_2_1);
 #endif
 
+libm_hidden_def (__fesetenv)
 libm_hidden_ver (__fesetenv, fesetenv)
 versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);
diff --git a/sysdeps/sparc/fpu/feupdateenv.c b/sysdeps/sparc/fpu/feupdateenv.c
index db5f382a34..cb001e19c8 100644
--- a/sysdeps/sparc/fpu/feupdateenv.c
+++ b/sysdeps/sparc/fpu/feupdateenv.c
@@ -29,7 +29,7 @@ __feupdateenv (const fenv_t *envp)
   tmp &= FE_ALL_EXCEPT;
 
   /* Install new environment.  */
-  fesetenv (envp);
+  __fesetenv (envp);
 
   /* Raise the safed exception.  Incidently for us the implementation
      defined format of the values in objects of type fexcept_t is the
diff --git a/sysdeps/tile/math_private.h b/sysdeps/tile/math_private.h
index 6b9e7618dd..8ff1435f17 100644
--- a/sysdeps/tile/math_private.h
+++ b/sysdeps/tile/math_private.h
@@ -32,6 +32,7 @@
 extern inline int fegetenv (fenv_t *__e)	{ return 0; }
 extern inline int __fegetenv (fenv_t *__e)	{ return 0; }
 extern inline int fesetenv (const fenv_t *__e)	{ return 0; }
+extern inline int __fesetenv (const fenv_t *__e)	{ return 0; }
 extern inline int feupdateenv (const fenv_t *__e) { return 0; }
 extern inline int fegetround (void)		{ return FE_TONEAREST; }
 extern inline int __fegetround (void)		{ return FE_TONEAREST; }
diff --git a/sysdeps/x86_64/fpu/fesetenv.c b/sysdeps/x86_64/fpu/fesetenv.c
index 40428a6754..3e3fd8492d 100644
--- a/sysdeps/x86_64/fpu/fesetenv.c
+++ b/sysdeps/x86_64/fpu/fesetenv.c
@@ -21,7 +21,7 @@
 
 
 int
-fesetenv (const fenv_t *envp)
+__fesetenv (const fenv_t *envp)
 {
   fenv_t temp;
 
@@ -85,4 +85,6 @@ fesetenv (const fenv_t *envp)
   /* Success.  */
   return 0;
 }
-libm_hidden_def (fesetenv)
+libm_hidden_def (__fesetenv)
+weak_alias (__fesetenv, fesetenv)
+libm_hidden_weak (fesetenv)
diff --git a/sysdeps/x86_64/fpu/feupdateenv.c b/sysdeps/x86_64/fpu/feupdateenv.c
index aaff4d2a1d..7aab1ad2ca 100644
--- a/sysdeps/x86_64/fpu/feupdateenv.c
+++ b/sysdeps/x86_64/fpu/feupdateenv.c
@@ -30,7 +30,7 @@ __feupdateenv (const fenv_t *envp)
   temp = (temp | xtemp) & FE_ALL_EXCEPT;
 
   /* Install new environment.  */
-  fesetenv (envp);
+  __fesetenv (envp);
 
   /* Raise the saved exception.  Incidently for us the implementation
      defined format of the values in objects of type fexcept_t is the