Re: [PATCH users/roland/gold-charnn] gold: Use char16_t, char32_t instead of uint16_t, uint32_t as character types

[Vaseeharan Vinayagamoorthy <Vaseeharan.Vinayagamoorthy@arm.com>]

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Hello,


This patch has started causing errors in our builds, using GCC 4.8.5.
This is affecting our cross builds of these targets:
aarch64_be_none_linux_gnu
aarch64_none_linux_gnu
arm_none_linux_gnueabi
arm_none_linux_gnueabihf


The errors are:


/…/src/binutils-gdb/gold/merge.cc:668:27: error: ‘char16_t’ was not declared in this scope


 class Output_merge_string<char16_t>;


                           ^


/…/src/binutils-gdb/gold/merge.cc:668:35: error: template argument 1 is invalid


 class Output_merge_string<char16_t>;


                                   ^


/…/src/binutils-gdb/gold/merge.cc:671:27: error: ‘char32_t’ was not declared in this scope


 class Output_merge_string<char32_t>;


                           ^


/…/src/binutils-gdb/gold/merge.cc:671:35: error: template argument 1 is invalid


 class Output_merge_string<char32_t>;


                                   ^


Kind regards,
Vasee



________________________________
From: Binutils <binutils-bounces+vvinayag=arm.com@sourceware.org> on behalf of Roland McGrath via Binutils <binutils@sourceware.org>
Sent: 05 September 2023 20:35
To: Binutils <binutils@sourceware.org>
Subject: [PATCH users/roland/gold-charnn] gold: Use char16_t, char32_t instead of uint16_t, uint32_t as character types

The std::basic_string template type is only specified for
instantiations using character types.  Newer (LLVM) libc++
implementations no longer allow non-character integer types
to be used.

Ok for trunk?

Thanks,
Roland

diff --git a/gold/merge.cc b/gold/merge.cc
index c12efc9905e..ce31a792443 100644
--- a/gold/merge.cc
+++ b/gold/merge.cc
@@ -665,10 +665,10 @@ template
 class Output_merge_string<char>;

 template
-class Output_merge_string<uint16_t>;
+class Output_merge_string<char16_t>;

 template
-class Output_merge_string<uint32_t>;
+class Output_merge_string<char32_t>;

 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
 template
diff --git a/gold/output.cc b/gold/output.cc
index a1978eb5f32..6053e4db33d 100644
--- a/gold/output.cc
+++ b/gold/output.cc
@@ -29,6 +29,7 @@
 #include <unistd.h>
 #include <sys/stat.h>
 #include <algorithm>
+#include <uchar.h>

 #ifdef HAVE_SYS_MMAN_H
 #include <sys/mman.h>
@@ -2706,10 +2707,10 @@
Output_section::add_merge_input_section(Relobj* object, unsigned int
shndx,
              pomb = new Output_merge_string<char>(addralign);
              break;
            case 2:
-             pomb = new Output_merge_string<uint16_t>(addralign);
+             pomb = new Output_merge_string<char16_t>(addralign);
              break;
            case 4:
-             pomb = new Output_merge_string<uint32_t>(addralign);
+             pomb = new Output_merge_string<char32_t>(addralign);
              break;
            default:
              return false;
diff --git a/gold/stringpool.cc b/gold/stringpool.cc
index a2cd44d5244..b5ac1dd34ca 100644
--- a/gold/stringpool.cc
+++ b/gold/stringpool.cc
@@ -25,6 +25,7 @@
 #include <cstring>
 #include <algorithm>
 #include <vector>
+#include <uchar.h>

 #include "output.h"
 #include "parameters.h"
@@ -527,9 +528,9 @@ template
 class Stringpool_template<char>;

 template
-class Stringpool_template<uint16_t>;
+class Stringpool_template<char16_t>;

 template
-class Stringpool_template<uint32_t>;
+class Stringpool_template<char32_t>;

 } // End namespace gold.