On 12/6/25 11:52 AM, [email protected] wrote:
Dear contributor,
Our automatic CI has detected problems related to your patch(es). Please find
some details below.
In arm-eabi v7-a softfp, after:
| commit gcc-16-5581-g3ad2e2d707c3
| Author: Jason Merrill <[email protected]>
| Date: Tue Nov 11 15:58:01 2025 +0530
|
| driver/c++: add --compile-std-module
|
| For simple testcases that want to use the std module, it would be
useful to
| have a reasonably short way to request building the binary module form
| before the testcase. So with this patch users can write
| ... 31 lines of the commit log omitted.
Produces 1 regression:
|
| regressions.sum:
| Running g++:g++.dg/modules/modules.exp ...
| FAIL: g++.dg/modules/compile-std1.C -std=c++26 (test for excess errors)
It seems that module std doesn't compile on arm-eabi, which is good to know.
There seem to be two general issues: first, that some of the <stdio.h>
functions that <print> relies on aren't declared:
/home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/builds/x86_64-pc-linux-gnu/arm-eabi/gcc-gcc.git~master-sta\
ge2/arm-eabi/libstdc++-v3/include/print: In member function 'virtual void
std::__format::_File_sink::_M_o\
verflow()':
/home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/builds/x86_64-pc-linux-gnu/arm-eabi/gcc-gcc.git~master-sta\
ge2/arm-eabi/libstdc++-v3/include/print:197:20: error: '::fwrite_unlocked' has
not been declared; did you\
mean '_fwrite_unlocked_r'?
/home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/builds/x86_64-pc-linux-gnu/arm-eabi/gcc-gcc.git~master-sta\
ge2/arm-eabi/libstdc++-v3/include/print: In constructor
'std::__format::_File_sink::_File_sink(FILE*, boo\
l)':
/home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/builds/x86_64-pc-linux-gnu/arm-eabi/gcc-gcc.git~master-sta\
ge2/arm-eabi/libstdc++-v3/include/print:212:9: error: '::flockfile' has not
been declared; did you mean '\
_flockfile'?
/home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/builds/x86_64-pc-linux-gnu/arm-eabi/gcc-gcc.git~master-sta\
ge2/arm-eabi/libstdc++-v3/include/print: In destructor
'std::__format::_File_sink::~_File_sink()':
/home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/builds/x86_64-pc-linux-gnu/arm-eabi/gcc-gcc.git~master-sta\
ge2/arm-eabi/libstdc++-v3/include/print:218:11: error: '::putc_unlocked' has
not been declared; did you m\
ean '_putc_unlocked_r'?
/home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/builds/x86_64-pc-linux-gnu/arm-eabi/gcc-gcc.git~master-sta\
ge2/arm-eabi/libstdc++-v3/include/print:219:9: error: '::funlockfile' has not
been declared; did you mean\
'_funlockfile'?
It seems that newlib doesn't declare these functions under -std=c++26,
only -std=gnu++26. I don't know what the right approach to this is.
and then a bunch of "not declared" exports, such as
/home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/builds/x86_64-pc-linux-gnu/arm-eabi/gcc-gcc.git~master-sta\
ge2/arm-eabi/libstdc++-v3/include/bits/std.cc:1002:14: error:
'condition_variable' has not been declared \
in 'std'
This looks like just needing to add more #if to std.cc, as below. OK
for trunk?
Incidentally, is it expected that arm-eabi doesn't support gthread?
Jason
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