Missing pointer dereference in tree-affine.c

[Richard Sandiford]

wide_int_constant_multiple_p used:

      if (*mult_set && mult != 0)
        return false;

to check whether we had previously seen a nonzero multiple, but "mult" is
a pointer to the previous value rather than the previous value itself.

Noticed by inspection while working on another patch, so I don't have a
testcase.  I tried adding an assert for combinations that were wrongly
rejected before but it didn't trigger during a bootstrap and regtest.

Tested on x86_64-linux-gnu.  OK to install?

Thanks,
Richard


gcc/
        * tree-affine.c (wide_int_constant_multiple_p): Add missing
        pointer dereference.

diff --git a/gcc/tree-affine.c b/gcc/tree-affine.c
index 32f2301..4884241 100644
--- a/gcc/tree-affine.c
+++ b/gcc/tree-affine.c
@@ -769,7 +769,7 @@ wide_int_constant_multiple_p (const widest_int &val, const 
widest_int &div,
 
   if (val == 0)
     {
-      if (*mult_set && mult != 0)
+      if (*mult_set && *mult != 0)
        return false;
       *mult_set = true;
       *mult = 0;