[binutils-gdb/binutils-2_36-branch] Fix gold to use mallinfo2 if available instead of deprecated mallinfo.

[Alan Modra]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=212b5b74a073db00569c635cb3d78a4a966a3c84

commit 212b5b74a073db00569c635cb3d78a4a966a3c84
Author: Duncan Simpson <dr.duncan.p.simpson@gmail.com>
Date:   Fri Mar 19 14:22:08 2021 -0700

    Fix gold to use mallinfo2 if available instead of deprecated mallinfo.
    
    gold/
            PR gold/26585
            * configure.ac: Add check for mallinfo2.
            * configure: Regenerate.
            * main.cc (main): Use mallinfo2 if available.
    
            PR gold/26585
            * main.cc (main): Fix typo in previous patch.
    
            PR gold/26585
            * config.in: Regenerate from previous commit.
    
    (cherry picked from commit 4ee60495054b362530a7471d363e00143ecb5cbe)
    (cherry picked from commit cc1849716f5c217a38ee416b48da1914a8ab66cb)
    (cherry picked from commit 9331846e44b34c985017264ee58a31b8bf2d5742)

Diff:
---
 gold/config.in    | 3 +++
 gold/configure    | 2 +-
 gold/configure.ac | 2 +-
 gold/main.cc      | 9 +++++++--
 4 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/gold/config.in b/gold/config.in
index aaad1bee706..ca0b9d2e2f9 100644
--- a/gold/config.in
+++ b/gold/config.in
@@ -124,6 +124,9 @@
 /* Define to 1 if you have the `mallinfo' function. */
 #undef HAVE_MALLINFO
 
+/* Define to 1 if you have the `mallinfo2' function. */
+#undef HAVE_MALLINFO2
+
 /* Define to 1 if you have the <memory.h> header file. */
 #undef HAVE_MEMORY_H
 
diff --git a/gold/configure b/gold/configure
index e264a65ac3c..b9f062b68eb 100755
--- a/gold/configure
+++ b/gold/configure
@@ -9967,7 +9967,7 @@ case "$ac_cv_search_dlopen" in
 esac
 
 
-for ac_func in mallinfo posix_fallocate fallocate readv sysconf times mkdtemp
+for ac_func in mallinfo mallinfo2 posix_fallocate fallocate readv sysconf times mkdtemp
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_cxx_check_func "$LINENO" "$ac_func" "$as_ac_var"
diff --git a/gold/configure.ac b/gold/configure.ac
index eed45664093..1716a779416 100644
--- a/gold/configure.ac
+++ b/gold/configure.ac
@@ -636,7 +636,7 @@ case "$ac_cv_search_dlopen" in
 esac
 AC_SUBST(DLOPEN_LIBS)
 
-AC_CHECK_FUNCS(mallinfo posix_fallocate fallocate readv sysconf times mkdtemp)
+AC_CHECK_FUNCS(mallinfo mallinfo2 posix_fallocate fallocate readv sysconf times mkdtemp)
 AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp, strndup, memmem])
 
 # Use of ::std::tr1::unordered_map::rehash causes undefined symbols
diff --git a/gold/main.cc b/gold/main.cc
index ea77ca3ebbe..ff44cbb7add 100644
--- a/gold/main.cc
+++ b/gold/main.cc
@@ -25,7 +25,7 @@
 #include <cstdio>
 #include <cstring>
 
-#ifdef HAVE_MALLINFO
+#if defined(HAVE_MALLINFO) || defined(HAVE_MALLINFO2)
 #include <malloc.h>
 #endif
 
@@ -290,11 +290,16 @@ main(int argc, char** argv)
               elapsed.sys / 1000, (elapsed.sys % 1000) * 1000,
               elapsed.wall / 1000, (elapsed.wall % 1000) * 1000);
 
-#ifdef HAVE_MALLINFO
+#if defined(HAVE_MALLINFO2)
+      struct mallinfo2 m = mallinfo2();
+      fprintf(stderr, _("%s: total space allocated by malloc: %lld bytes\n"),
+	      program_name, static_cast<long long>(m.arena));
+#elif defined(HAVE_MALLINFO)
       struct mallinfo m = mallinfo();
       fprintf(stderr, _("%s: total space allocated by malloc: %lld bytes\n"),
 	      program_name, static_cast<long long>(m.arena));
 #endif
+
       File_read::print_stats();
       Archive::print_stats();
       Lib_group::print_stats();