[bug #59585] Make with output-sync prints 'fcntl(): Bad file descriptor' on MacOS when output is piped

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?59585>

                 Summary: Make with output-sync prints 'fcntl(): Bad file
descriptor' on MacOS when output is piped
                 Project: make
            Submitted by: None
            Submitted on: Tue 01 Dec 2020 11:10:50 AM UTC
                Severity: 3 - Normal
              Item Group: Bug
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: 4.3
        Operating System: POSIX-Based
           Fixed Release: None
           Triage Status: None

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Details:

OS: macOS 10.13.4 (17E202), Darwin 17.5.0
Make: 4.3

Was checking this problem both on Linux and MacOS, only MacOS is having it
right now.

Steps to reproduce:
1. Create any rule for make.
2. Launch following command: make -j -O <target> | cat
Running make without output-sync does not reproduce the problem.

Here is my output:
~/example$ ls -lAhF
total 512
-rw-r--r--  1 nikita.akatiev  orcgroup    62B Dec  1 13:56 main.c
-rwxr-xr-x  1 nikita.akatiev  orcgroup   250K Dec  1 13:55 make*

~/example$ cat main.c
#include <stdio.h>

int main() {
        puts("Hello");
        return 0;
}

~/example$ ./make --version
GNU Make 4.3
Built for x86_64-apple-darwin17.5.0
Copyright (C) 1988-2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

~/example$ ./make -j -O main | cat
fcntl(): Bad file descriptor
cc     main.c   -o main

This is a minimal example; launched on a project with multiple sources (e.g.
when building make itself), it seems like every time the output buffers the
error is shown:

gmake[1]: Leaving directory '.../make-4.3/lib'
make  all-recursive
fcntl(): Bad file descriptor
gmake[3]: Entering directory '.../make-4.3/lib'
/usr/local/opt/llvm/bin/clang -DHAVE_CONFIG_H -I. -I../src  
-I/usr/local/include  -g -O2 -MT stripslash.o -MD -MP -MF .deps/stripslash.Tpo
-c -o stripslash.o stripslash.c
mv -f .deps/stripslash.Tpo .deps/stripslash.Po
gmake[3]: Leaving directory '.../make-4.3/lib'
fcntl(): Bad file descriptor
gmake[3]: Entering directory '.../make-4.3/lib'
/usr/local/opt/llvm/bin/clang -DHAVE_CONFIG_H -I. -I../src  
-I/usr/local/include  -g -O2 -MT strerror-override.o -MD -MP -MF
.deps/strerror-override.Tpo -c -o strerror-override.o strerror-override.c
mv -f .deps/strerror-override.Tpo .deps/strerror-override.Po
gmake[3]: Leaving directory '.../make-4.3/lib'
fcntl(): Bad file descriptor
gmake[3]: Entering directory '.../make-4.3/lib'
/usr/local/opt/llvm/bin/clang -DHAVE_CONFIG_H -I. -I../src  
-I/usr/local/include  -g -O2 -MT xconcat-filename.o -MD -MP -MF
.deps/xconcat-filename.Tpo -c -o xconcat-filename.o xconcat-filename.c
mv -f .deps/xconcat-filename.Tpo .deps/xconcat-filename.Po
gmake[3]: Leaving directory '.../make-4.3/lib'
fcntl(): Bad file descriptor
gmake[3]: Entering directory '.../make-4.3/lib'

A real use case of piping the output is, for example, passing the build log to
tee command for both printing logs and saving them into a file, while using
grouped and synchronized logging produced by output-sync.




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