[Bug 259270] bmake exits with status 0 upon ENOSPC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259270

Mark Johnston <markj@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|New                         |Open

--- Comment #1 from Mark Johnston <markj@FreeBSD.org> ---
I used dtrace to stop the make process when the error occurs:

markj@biggie> sudo dtrace -n 'syscall:::return /errno ==
ENOSPC/{raise(SIGSTOP);}' -w

Then
markj@biggie> gdb -q -p $(pgrep make)
Attaching to process 56889
Reading symbols from /usr/bin/make...
Reading symbols from /usr/lib/debug//usr/bin/make.debug...
Reading symbols from /lib/libc.so.7...

warning: the debug information found in "/usr/lib/debug//lib/libc.so.7.debug"
does not match "/lib/libc.so.7" (CRC mismatch).

(No debugging symbols found in /lib/libc.so.7)
Reading symbols from /libexec/ld-elf.so.1...

warning: the debug information found in
"/usr/lib/debug//libexec/ld-elf.so.1.debug" does not match
"/libexec/ld-elf.so.1" (CRC mismatch).

(No debugging symbols found in /libexec/ld-elf.so.1)
[Switching to LWP 101646 of process 56889]
0x00000008011d0faa in _write () from /lib/libc.so.7
(gdb) bt
#0  0x00000008011d0faa in _write () from /lib/libc.so.7
#1  0x00000008011b4307 in ?? () from /lib/libc.so.7
#2  0x00000008011aa57e in fflush () from /lib/libc.so.7
#3  0x0000000001039a5e in ShellWriter_WriteFmt (wr=<optimized out>,
fmt=0x10286f4 "%s\n", 
    arg=0x8018a0102 "cd /usr/home/markj/src/freebsd;
PATH=/sbin:/bin:/usr/sbin:/usr/bin MAKE_CMD=\"make\" make -m
/usr/home/markj/src/freebsd/share/mk -f Makefile.inc1  TARGET=amd64
TARGET_ARCH=amd64  buildkernel") at /root/freebsd/contrib/bmake/job.c:798
#4  JobWriteCommand (job=<optimized out>, wr=<optimized out>, ln=0x80190cf00,
ucmd=<optimized out>) at /root/freebsd/contrib/bmake/job.c:1010
#5  JobWriteCommands (job=<optimized out>, job@entry=0x801913fc0) at
/root/freebsd/contrib/bmake/job.c:1048
#6  0x0000000001037985 in JobWriteShellCommands (job=0x801913fc0,
gn=0x801905f00, out_run=<optimized out>) at
/root/freebsd/contrib/bmake/job.c:1646
#7  JobStart (gn=<optimized out>, special=false) at
/root/freebsd/contrib/bmake/job.c:1725
#8  Job_Make (gn=gn@entry=0x801905f00) at
/root/freebsd/contrib/bmake/job.c:2170
#9  0x000000000103f735 in MakeStartJobs () at
/root/freebsd/contrib/bmake/make.c:1028
#10 0x000000000103f4c4 in Make_Run (targs=targs@entry=0x7fffffffdeb0) at
/root/freebsd/contrib/bmake/make.c:1391
#11 0x000000000103ce4c in runTargets () at
/root/freebsd/contrib/bmake/main.c:953
#12 main_Run () at /root/freebsd/contrib/bmake/main.c:1642
#13 main (argc=17129376, argv=<optimized out>) at
/root/freebsd/contrib/bmake/main.c:1701

So we're writing to the "job file" set up by JobWriteShellCommands(), which
creates a tmpfile and unlinks it.

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