[gcc r13-1301] compiler: always initialize mpfr in integer import

[gcc r13-1301] compiler: always initialize mpfr in integer import

[Ian Lance Taylor]

https://gcc.gnu.org/g:722750a44a93ce7d23e09df240d8ab700a2d30e6

commit r13-1301-g722750a44a93ce7d23e09df240d8ab700a2d30e6
Author: Ian Lance Taylor <iant@golang.org>
Date:   Fri Jun 24 17:18:15 2022 -0700

    compiler: always initialize mpfr in integer import
    
    Test case is https://go.dev/cl/413980.
    
    Fixes golang/go#52862
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/413981

Diff:
---
 gcc/go/gofrontend/MERGE          | 2 +-
 gcc/go/gofrontend/expressions.cc | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index e20212e990a..f84347ea575 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-6a7ba754e5d98efe0875f1f41f40098e976e7958
+6edae0ef6521569e8f949aaaafa9dc1139825051
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.
diff --git a/gcc/go/gofrontend/expressions.cc b/gcc/go/gofrontend/expressions.cc
index 734ecb9492e..135dae02262 100644
--- a/gcc/go/gofrontend/expressions.cc
+++ b/gcc/go/gofrontend/expressions.cc
@@ -2715,7 +2715,7 @@ Integer_expression::do_import(Import_expression* imp, Location loc)
 	  return Expression::make_error(loc);
 	}
       if (pos == std::string::npos)
-	mpfr_set_ui(real, 0, MPFR_RNDN);
+	mpfr_init_set_ui(real, 0, MPFR_RNDN);
       else
 	{
 	  std::string real_str = num.substr(0, pos);