[newlib-cygwin] Cygwin: math/modfl.c: Fix segment faults in modfl().

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=0e6690a92ccda8b2d6a759bc1649c6160137d170

commit 0e6690a92ccda8b2d6a759bc1649c6160137d170
Author: Liu Hao <lh_mouse@126.com>
Date:   Sun Aug 30 13:56:31 2020 +0200

    Cygwin: math/modfl.c: Fix segment faults in modfl().
    
    Reference: https://sourceforge.net/p/mingw-w64/bugs/478/
    Signed-off-by: Liu Hao <lh_mouse@126.com>

Diff:
---
 winsup/cygwin/math/modfl.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/winsup/cygwin/math/modfl.c b/winsup/cygwin/math/modfl.c
index af75a8b8c..ef1ab16ce 100644
--- a/winsup/cygwin/math/modfl.c
+++ b/winsup/cygwin/math/modfl.c
@@ -21,7 +21,7 @@ modfl (long double value, long double* iptr)
     "fldcw (%%rsp)\n"
     "frndint\n"
     "fldcw 4(%%rsp)\n"
-    "addq $8, %%rsp\n" : "=t" (int_part) : "0" (value)); /* round */
+    "addq $8, %%rsp\n" : "=t" (int_part) : "0" (value) : "eax"); /* round */
 #elif defined(_X86_) || defined(__i386__)
   asm ("push %%eax\n\tsubl $8, %%esp\n"
     "fnstcw 4(%%esp)\n"
@@ -31,7 +31,7 @@ modfl (long double value, long double* iptr)
     "fldcw (%%esp)\n"
     "frndint\n"
     "fldcw 4(%%esp)\n"
-    "addl $8, %%esp\n\tpop %%eax\n" : "=t" (int_part) : "0" (value)); /* round */
+    "addl $8, %%esp\n\tpop %%eax\n" : "=t" (int_part) : "0" (value) : "eax"); /* round */
 #else
   int_part = truncl(value);
 #endif