[glibc/release/2.43/master] m68k: Fix fmod/fmodf infinite recursion (BZ 34508)

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8017bcfc4d9bd16083cb7f3d8eda7d07b4593b09

commit 8017bcfc4d9bd16083cb7f3d8eda7d07b4593b09
Author: Adhemerval Zanella <[email protected]>
Date:   Wed Aug 12 09:03:17 2026 -0300

    m68k: Fix fmod/fmodf infinite recursion (BZ 34508)
    
    Commits 6deadd4eb6a and ade9f30ce27 changed m68k fmod to call
    __m81_u(fmod), instead of the mathimpl.h inline
    __m81_u(__ieee754_fmod) (that wraps the m68k fmod instruction).
    This leads to infinite recursion.
    
    Tested-by: John Paul Adrian Glaubitz <[email protected]>
    
    (cherry picked from commit bb213471bedc177b8efd3178584137fb81cc976a)

Diff:
---
 NEWS                              | 2 ++
 sysdeps/m68k/m680x0/fpu/e_fmod.c  | 2 +-
 sysdeps/m68k/m680x0/fpu/e_fmodf.c | 2 +-
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/NEWS b/NEWS
index cec8b61f55..9305ab5d34 100644
--- a/NEWS
+++ b/NEWS
@@ -14,6 +14,8 @@ The following bugs are resolved with this release:
  [33848] build: Build fails at openat2.h, redefinition of 'struct
     open_how'
  [33904] build: error: '__vasprintf_chk' undeclared here
+ [34509] libc: [m68k] Regression: Perl locks up after upgrading glibc
+   to 2.43
 
 Version 2.43
 
diff --git a/sysdeps/m68k/m680x0/fpu/e_fmod.c b/sysdeps/m68k/m680x0/fpu/e_fmod.c
index 9ad6924422..faac7c79e3 100644
--- a/sysdeps/m68k/m680x0/fpu/e_fmod.c
+++ b/sysdeps/m68k/m680x0/fpu/e_fmod.c
@@ -33,7 +33,7 @@ __fmod (double x, double y)
 			&& !is_nan (hx)))
     return __math_invalid (x);
 
-  return __m81_u(fmod)(x, y);
+  return __m81_u(__ieee754_fmod)(x, y);
 }
 strong_alias (__fmod, __ieee754_fmod)
 libm_alias_finite (__ieee754_fmod, __fmod)
diff --git a/sysdeps/m68k/m680x0/fpu/e_fmodf.c b/sysdeps/m68k/m680x0/fpu/e_fmodf.c
index a3bd24b71f..98797e0887 100644
--- a/sysdeps/m68k/m680x0/fpu/e_fmodf.c
+++ b/sysdeps/m68k/m680x0/fpu/e_fmodf.c
@@ -34,7 +34,7 @@ __fmodf (float x, float y)
 			&& !is_nan (hx)))
     return __math_invalidf (x);
 
-  return __m81_u(fmodf)(x, y);
+  return __m81_u(__ieee754_fmodf)(x, y);
 }
 strong_alias (__fmodf, __ieee754_fmodf)
 versioned_symbol (libm, __fmodf, fmodf, GLIBC_2_43);