[Bug libstdc++/64438] Removing string-conversion requirement causes libstdc++-v3 fails on AArch64.

["belagod at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64438

--- Comment #2 from Tejas Belagod <belagod at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #1)
> That's strange, it should only affect targets that define
> _GLIBCXX_HAVE_BROKEN_VSWPRINTF i.e. only mingw
> 
> What are the full errors in the libstdc++-v3/testsuite/libstdc++.log file?

.../builds/fsf-trunk/fsf-trunk.593/workdir/rhe5x86_64/aarch64-none-elf/obj/gcc2/./gcc/xg++
-shared-libgcc
-B.../builds/fsf-trunk/fsf-trunk.593/workdir/rhe5x86_64/aarch64-none-elf/obj/gcc2/./gcc
-nostdinc++
-L.../builds/fsf-trunk/fsf-trunk.593/workdir/rhe5x86_64/aarch64-none-elf/obj/gcc2/aarch64-none-elf/libstdc++-v3/src
-L.../builds/fsf-trunk/fsf-trunk.593/workdir/rhe5x86_64/aarch64-none-elf/obj/gcc2/aarch64-none-elf/libstdc++-v3/src/.libs
-L.../builds/fsf-trunk/fsf-trunk.593/workdir/rhe5x86_64/aarch64-none-elf/obj/gcc2/aarch64-none-elf/libstdc++-v3/libsupc++/.libs
-B.../fsf-trunk/builds/fsf-trunk.593/workdir/rhe5x86_64/aarch64-none-elf/install/aarch64-none-elf/bin/
-B.../fsf-trunk/builds/fsf-trunk.593/workdir/rhe5x86_64/aarch64-none-elf/install/aarch64-none-elf/lib/
-isystem
.../fsf-trunk/builds/fsf-trunk.593/workdir/rhe5x86_64/aarch64-none-elf/install/aarch64-none-elf/include
-isystem
.../fsf-trunk/builds/fsf-trunk.593/workdir/rhe5x86_64/aarch64-none-elf/install/aarch64-none-elf/sys-include
-B.../builds/fsf-trunk/fsf-trunk.593/workdir/rhe5x86_64/aarch64-none-elf/obj/gcc2/aarch64-none-elf/./libstdc++-v3/src/.libs
-D_GLIBCXX_ASSERT -fmessage-length=0 -ffunction-sections -fdata-sections -g -O2
-DLOCALEDIR="." -nostdinc++
-I.../builds/fsf-trunk/fsf-trunk.593/workdir/rhe5x86_64/aarch64-none-elf/obj/gcc2/aarch64-none-elf/libstdc++-v3/include/aarch64-none-elf
-I.../builds/fsf-trunk/fsf-trunk.593/workdir/rhe5x86_64/aarch64-none-elf/obj/gcc2/aarch64-none-elf/libstdc++-v3/include
-I.../fsf-trunk/builds/fsf-trunk.593/src/gcc/libstdc++-v3/libsupc++
-I.../fsf-trunk/builds/fsf-trunk.593/src/gcc/libstdc++-v3/include/backward
-I.../fsf-trunk/builds/fsf-trunk.593/src/gcc/libstdc++-v3/testsuite/util
.../fsf-trunk/builds/fsf-trunk.593/src/gcc/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/char/dr1261.cc
-std=gnu++11 ./libtestc++.a -specs=aem-ve.specs -lm -mcmodel=small -fPIC -o
./dr1261.exe^M
.../fsf-trunk/builds/fsf-trunk.593/src/gcc/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/char/dr1261.cc:
In function 'void test01()':^M
.../fsf-trunk/builds/fsf-trunk.593/src/gcc/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/char/dr1261.cc:31:32:
error: 'to_string' was not declared in this scope^M
   const string one(to_string(-2));^M
                                ^^M
compiler exited with status 1
output is:
.../fsf-trunk/builds/fsf-trunk.593/src/gcc/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/char/dr1261.cc:
In function 'void test01()':^M
.../fsf-trunk/builds/fsf-trunk.593/src/gcc/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/char/dr1261.cc:31:32:
error: 'to_string' was not declared in this scope^M
   const string one(to_string(-2));^M
                                ^^M

FAIL: 21_strings/basic_string/numeric_conversions/char/dr1261.cc (test for
excess errors)
Excess errors:
.../fsf-trunk/builds/fsf-trunk.593/src/gcc/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/char/dr1261.cc:31:32:
error: 'to_string' was not declared in this scope

UNRESOLVED: 21_strings/basic_string/numeric_conversions/char/dr1261.cc
compilation failed to produce executable
extra_tool_flags are:
 -std=gnu++11