[gcc r12-7156] compiler: don't warn for print()

[gcc r12-7156] compiler: don't warn for print()

[Ian Lance Taylor]

https://gcc.gnu.org/g:e50a79552d567cd49703103d478ab93d805f60c1

commit r12-7156-ge50a79552d567cd49703103d478ab93d805f60c1
Author: Ian Lance Taylor <iant@golang.org>
Date:   Tue Feb 8 20:19:04 2022 -0800

    compiler: don't warn for print()
    
    We used to warn for calls to print(), because it doesn't do anything.
    However, a Go 1.18 test uses that call, and it is valid Go.  Change
    the compiler to just accept it and compile it; this will produce calls
    to printlock and printunlock, and nothing else.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/384355

Diff:
---
 gcc/go/gofrontend/MERGE          |  2 +-
 gcc/go/gofrontend/expressions.cc | 11 +----------
 2 files changed, 2 insertions(+), 11 deletions(-)

diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index 8cbd0c19a8d..52f4b423f02 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-263e8d2a2ab57c6f2b3035f370d40476bda87c9f
+b0dcd2d1e5e73952408b9f2d4d86ae12d102b20c
 
 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 3f597654858..1b3b3bf135e 100644
--- a/gcc/go/gofrontend/expressions.cc
+++ b/gcc/go/gofrontend/expressions.cc
@@ -10332,16 +10332,7 @@ Builtin_call_expression::do_check_types(Gogo*)
     case BUILTIN_PRINTLN:
       {
 	const Expression_list* args = this->args();
-	if (args == NULL)
-	  {
-	    if (this->code_ == BUILTIN_PRINT)
-	      go_warning_at(this->location(), 0,
-			 "no arguments for built-in function %<%s%>",
-			 (this->code_ == BUILTIN_PRINT
-			  ? "print"
-			  : "println"));
-	  }
-	else
+	if (args != NULL)
 	  {
 	    for (Expression_list::const_iterator p = args->begin();
 		 p != args->end();