[gcc r14-9698] compiler: use correct size and comparison in index value overflow check

[Ian Lance Taylor via Gcc-cvs]

https://gcc.gnu.org/g:bd8a3eecc4edffad6e5091ae42c1cb1c1730b2ab

commit r14-9698-gbd8a3eecc4edffad6e5091ae42c1cb1c1730b2ab
Author: Ian Lance Taylor <i...@golang.org>
Date:   Wed Mar 27 13:37:45 2024 -0700

    compiler: use correct size and comparison in index value overflow check
    
    This has apparently been wrong since I introduced the code ten years ago.
    
    Fixes PR go/114500
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/574835

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 de6e21fb3b5..50d430d5034 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-3f597287b6b858794dabdfe1bf83b386aad18102
+98e92493db2ab7857a5934a950a830fc1f95a4e5
 
 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 8429e553eac..238d5a56ca2 100644
--- a/gcc/go/gofrontend/expressions.cc
+++ b/gcc/go/gofrontend/expressions.cc
@@ -18790,7 +18790,7 @@ Composite_literal_expression::lower_array(Type* type)
 
          Named_type* ntype = Type::lookup_integer_type("int");
          Integer_type* inttype = ntype->integer_type();
-         if (sizeof(index) <= static_cast<size_t>(inttype->bits() * 8)
+         if (sizeof(index) >= static_cast<size_t>(inttype->bits() / 8)
              && index >> (inttype->bits() - 1) != 0)
            {
              go_error_at(index_expr->location(), "index value overflow");