UpstreamStatus: Pending

When LONG_MIN is passed to val, -val is undefined.  This patch fixes
it.  See for details: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50066

Received this patch from H.J. Lu <hjl.tools@gmail.com>

Signed-Off-By: Nitin A Kamble <nitin.a.kamble@intel.com> 2011/12/01

--- gmp-4.3.2/mpf/iset_si.c.ll	2010-01-07 12:09:03.000000000 -0800
+++ gmp-4.3.2/mpf/iset_si.c	2011-11-30 16:42:35.827944358 -0800
@@ -31,7 +31,7 @@ mpf_init_set_si (mpf_ptr r, long int val
   r->_mp_prec = prec;
   r->_mp_d = (mp_ptr) (*__gmp_allocate_func) ((prec + 1) * BYTES_PER_MP_LIMB);
 
-  vl = (mp_limb_t) (unsigned long int) (val >= 0 ? val : -val);
+  vl = (mp_limb_t) (val >= 0 ? (unsigned long int) val : -(unsigned long int) val);
 
   r->_mp_d[0] = vl & GMP_NUMB_MASK;
   size = vl != 0;
--- gmp-4.3.2/mpf/set_si.c.ll	2010-01-07 12:09:03.000000000 -0800
+++ gmp-4.3.2/mpf/set_si.c	2011-11-30 16:42:47.823878367 -0800
@@ -27,7 +27,7 @@ mpf_set_si (mpf_ptr dest, long val)
   mp_size_t size;
   mp_limb_t vl;
 
-  vl = (mp_limb_t) (unsigned long int) (val >= 0 ? val : -val);
+  vl = (mp_limb_t) (val >= 0 ? (unsigned long int) val : -(unsigned long int) val);
 
   dest->_mp_d[0] = vl & GMP_NUMB_MASK;
   size = vl != 0;
--- gmp-4.3.2/mpz/cmp_si.c.ll	2010-01-07 12:09:03.000000000 -0800
+++ gmp-4.3.2/mpz/cmp_si.c	2011-11-30 13:44:25.923319700 -0800
@@ -27,7 +27,7 @@ _mpz_cmp_si (mpz_srcptr u, signed long i
 {
   mp_size_t usize = u->_mp_size;
   mp_size_t vsize;
-  mp_limb_t u_digit;
+  mp_limb_t u_digit, vl_digit;
 
 #if GMP_NAIL_BITS != 0
   /* FIXME.  This isn't very pretty.  */
@@ -41,11 +41,14 @@ _mpz_cmp_si (mpz_srcptr u, signed long i
 
   vsize = 0;
   if (v_digit > 0)
-    vsize = 1;
+    {
+      vsize = 1;
+      vl_digit = (mp_limb_t) (unsigned long) v_digit;
+    }
   else if (v_digit < 0)
     {
       vsize = -1;
-      v_digit = -v_digit;
+      vl_digit = (mp_limb_t) -(unsigned long) v_digit;
     }
 
   if (usize != vsize)
@@ -56,10 +59,10 @@ _mpz_cmp_si (mpz_srcptr u, signed long i
 
   u_digit = u->_mp_d[0];
 
-  if (u_digit == (mp_limb_t) (unsigned long) v_digit)
+  if (u_digit == vl_digit)
     return 0;
 
-  if (u_digit > (mp_limb_t) (unsigned long) v_digit)
+  if (u_digit > vl_digit)
     return usize;
   else
     return -usize;
--- gmp-4.3.2/mpz/iset_si.c.ll	2010-01-07 12:09:03.000000000 -0800
+++ gmp-4.3.2/mpz/iset_si.c	2011-11-30 13:44:25.924319695 -0800
@@ -31,7 +31,7 @@ mpz_init_set_si (mpz_ptr dest, signed lo
   dest->_mp_alloc = 1;
   dest->_mp_d = (mp_ptr) (*__gmp_allocate_func) (BYTES_PER_MP_LIMB);
 
-  vl = (mp_limb_t) (unsigned long int) (val >= 0 ? val : -val);
+  vl = (mp_limb_t) (val >= 0 ? (unsigned long int) val : -(unsigned long int) val);
 
   dest->_mp_d[0] = vl & GMP_NUMB_MASK;
   size = vl != 0;
--- gmp-4.3.2/mpz/set_si.c.ll	2010-01-07 12:09:03.000000000 -0800
+++ gmp-4.3.2/mpz/set_si.c	2011-11-30 13:44:25.947319574 -0800
@@ -27,7 +27,7 @@ mpz_set_si (mpz_ptr dest, signed long in
   mp_size_t size;
   mp_limb_t vl;
 
-  vl = (mp_limb_t) (unsigned long int) (val >= 0 ? val : -val);
+  vl = (mp_limb_t) (val >= 0 ? (unsigned long int) val : -(unsigned long int) val);
 
   dest->_mp_d[0] = vl & GMP_NUMB_MASK;
   size = vl != 0;