NetBSD Problem Report #55405
From mlelstv@hoppa.1st.de Mon Jun 22 12:08:30 2020
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by mollari.NetBSD.org (Postfix) with ESMTPS id ECA281A9217
for <gnats-bugs@gnats.NetBSD.org>; Mon, 22 Jun 2020 12:08:29 +0000 (UTC)
Message-Id: <20200622120759.647A1B1@hoppa.1st.de>
Date: Mon, 22 Jun 2020 14:07:59 +0200 (CEST)
From: mlelstv@serpens.de
Reply-To: mlelstv@serpens.de
To: gnats-bugs@NetBSD.org
Subject: building lang/mercury loops in conftest
X-Send-Pr-Version: 3.95
>Number: 55405
>Category: pkg
>Synopsis: building lang/mercury loops in conftest
>Confidential: no
>Severity: critical
>Priority: low
>Responsible: pkg-manager
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Mon Jun 22 12:10:00 +0000 2020
>Last-Modified: Sat Jul 10 16:40:00 +0000 2021
>Originator: Michael van Elst
>Release: NetBSD 9.0_STABLE
>Organization:
--
Michael van Elst
Internet: mlelstv@serpens.de
"A potential Snark may lurk in every tree."
>Environment:
System: NetBSD victory.netbsd.org 9.0_STABLE NetBSD 9.0_STABLE (GENERIC64) #0: Tue Mar 3 18:56:34 UTC 2020 mkrepro@mkrepro.NetBSD.or
g:/usr/src/sys/arch/evbarm/compile/GENERIC64 evbarm
Architecture: aarch64
Machine: evbarm
>Description:
Building lang/mercury hangs because it runs a test program as part
of configure that loops infinitely.
This is the test program. When compiled without options, the program
exits. But when compiled with -O it hangs on aarch64 and arm. On
amd64 it segfaults instead. This happens with various NetBSD and
gcc version.
----------------------------- snip -------------------------------
/* confdefs.h */
#define PACKAGE_NAME ""
#define PACKAGE_TARNAME ""
#define PACKAGE_VERSION ""
#define PACKAGE_STRING ""
#define PACKAGE_BUGREPORT ""
#define PACKAGE_URL ""
#define MR_FULLARCH "aarch64--netbsd"
#define MR_VERSION "14.01.1"
#define MR_MKFIFO "/usr/bin/mkfifo"
#define MR_HOSTNAMECMD "/bin/hostname -f"
#define MR_HAVE_SYSCONF 1
#define MR_HAVE_GETPAGESIZE 1
#define MR_HAVE_GETHOSTNAME 1
#define MR_HAVE_MMAP 1
#define MR_HAVE_MPROTECT 1
#define MR_HAVE_POSIX_MEMALIGN 1
#define MR_HAVE_SBRK 1
#define MR_HAVE_MEMMOVE 1
#define MR_HAVE_SIGACTION 1
#define MR_HAVE_SIGINTERRUPT 1
#define MR_HAVE_SETITIMER 1
#define MR_HAVE_SNPRINTF 1
#define MR_HAVE__SNPRINTF 1
#define MR_HAVE_VSNPRINTF 1
#define MR_HAVE__VSNPRINTF 1
#define MR_HAVE_STRERROR 1
#define MR_HAVE_STRERROR_R 1
#define MR_HAVE_OPEN 1
#define MR_HAVE_CLOSE 1
#define MR_HAVE_DUP 1
#define MR_HAVE_DUP2 1
#define MR_HAVE_FDOPEN 1
#define MR_HAVE_FILENO 1
#define MR_HAVE_FSTAT 1
#define MR_HAVE_STAT 1
#define MR_HAVE_LSTAT 1
#define MR_HAVE_ISATTY 1
#define MR_HAVE_GETPID 1
#define MR_HAVE_SETPGID 1
#define MR_HAVE_FORK 1
#define MR_HAVE_EXECLP 1
#define MR_HAVE_WAIT 1
#define MR_HAVE_KILL 1
#define MR_HAVE_GRANTPT 1
#define MR_HAVE_UNLOCKPT 1
#define MR_HAVE_PTSNAME 1
#define MR_HAVE_TCGETATTR 1
#define MR_HAVE_TCSETATTR 1
#define MR_HAVE_IOCTL 1
#define MR_HAVE_ACCESS 1
#define MR_HAVE_SLEEP 1
#define MR_HAVE_OPENDIR 1
#define MR_HAVE_READDIR 1
#define MR_HAVE_CLOSEDIR 1
#define MR_HAVE_MKDIR 1
#define MR_HAVE_SYMLINK 1
#define MR_HAVE_READLINK 1
#define MR_HAVE_GETTIMEOFDAY 1
#define MR_HAVE_SETENV 1
#define MR_HAVE_PUTENV 1
#define MR_HAVE__PUTENV 1
#define MR_HAVE_POSIX_SPAWN 1
#define MR_HAVE_SCHED_YIELD 1
#define MR_HAVE_MKSTEMP 1
#define MR_HAVE_SETRLIMIT 1
#define STDC_HEADERS 1
#define HAVE_SYS_TYPES_H 1
#define HAVE_SYS_STAT_H 1
#define HAVE_STDLIB_H 1
#define HAVE_STRING_H 1
#define HAVE_MEMORY_H 1
#define HAVE_STRINGS_H 1
#define HAVE_INTTYPES_H 1
#define HAVE_STDINT_H 1
#define HAVE_UNISTD_H 1
#define MR_HAVE_UNISTD_H 1
#define MR_HAVE_SYS_WAIT_H 1
#define MR_HAVE_SYS_SIGINFO_H 1
#define MR_HAVE_SYS_SIGNAL_H 1
#define MR_HAVE_UCONTEXT_H 1
#define MR_HAVE_SYS_PARAM_H 1
#define MR_HAVE_SYS_TIME_H 1
#define MR_HAVE_SYS_TIMES_H 1
#define MR_HAVE_SYS_TYPES_H 1
#define MR_HAVE_SYS_STAT_H 1
#define MR_HAVE_FCNTL_H 1
#define MR_HAVE_TERMIOS_H 1
#define MR_HAVE_SYS_IOCTL_H 1
#define MR_HAVE_SYS_RESOURCE_H 1
#define MR_HAVE_DIRENT_H 1
#define MR_HAVE_GETOPT_H 1
#define MR_HAVE_MALLOC_H 1
#define MR_HAVE_SEMAPHORE_H 1
#define MR_HAVE_PTHREAD_H 1
#define MR_HAVE_TIME_H 1
#define MR_HAVE_SPAWN_H 1
#define MR_HAVE_FENV_H 1
#define MR_HAVE_SYS_MMAN_H 1
#define MR_HAVE_SYS_SEM_H 1
#define MR_HAVE_SCHED_H 1
#define MR_HAVE_UTMPX_H 1
#define MR_HAVE_FESETROUND 1
#define MR_SIGACTION_FIELD sa_sigaction
#define MR_HAVE_SIGINFO 1
#define MR_HAVE_SIGINFO_T 1
#define MR_HAVE_SIGINFO 1
#define MR_WORD_TYPE long
#define MR_INTEGER_LENGTH_MODIFIER "l"
#define MR_INT_LEAST64_TYPE long
#define MR_INT_LEAST64_LENGTH_MODIFIER "l"
#define MR_INT_LEAST32_TYPE int
#define MR_INT_LEAST32_MAX INT_MAX
#define MR_UINT_LEAST32_MAX UINT_MAX
#define HAVE_DEV_T 1
#define HAVE_INO_T 1
#define MR_HAVE_DEV_T 1
#define MR_HAVE_INO_T 1
#define MR_INT_LEAST16_TYPE short
#define MR_INT_LEAST16_MAX SHRT_MAX
#define MR_UINT_LEAST16_MAX USHRT_MAX
#define MR_LOW_TAG_BITS 3
#define MR_BYTES_PER_WORD 8
#define MR_BITS_PER_WORD 64
#define MR_DOUBLE_IS_64_BIT 1
#define MR_SYNC_TERM_SIZE 3
#define MR_LITTLE_ENDIAN 1
#define MR_HAVE_OCREAT_OEXCL 1
#define MR_CAN_DO_PENDING_IO 1
/* end confdefs.h. */
extern void exit(int);
void *entry_foo_1;
void *entry_bar_1;
void *succip;
int global;
void *dummy_identity_function(void *);
foo() {
entry_foo_1 = && foo_1;
goto *dummy_identity_function(&&return_label);
return_label:
return;
foo_1:
__asm__ __volatile__("":::"memory");
if (global != 42) exit(1);
goto *entry_bar_1;
}
bar() {
entry_bar_1 = && bar_1;
goto *dummy_identity_function(&&return_label);
return_label:
return;
bar_1:
__asm__ __volatile__("":::"memory");
if (global != 42) exit(1);
goto *succip;
}
main() {
global = 42;
foo();
bar();
succip = &&last;
goto *dummy_identity_function(&&return_label);
return_label:
goto *entry_foo_1;
exit(1);
last:
__asm__ __volatile__("":::"memory");
if (global != 42) exit(1);
exit(0);
}
void *dummy_identity_function(void *p) {
return p;
}
----------------------------- snap -------------------------------
On amd64 the package builds besides crashing the test program.
If the test program is killed on aarch64, the build fails later
in the embedded boehm-gc code. This might be a consequence of the
configure test, but is more likely a separate problem.
>How-To-Repeat:
build lang/mercury on aarch64.
>Fix:
>Audit-Trail:
From: David Holland <dholland-pbugs@netbsd.org>
To: gnats-bugs@netbsd.org
Cc:
Subject: Re: pkg/55405: building lang/mercury loops in conftest
Date: Sat, 10 Jul 2021 16:37:37 +0000
On Mon, Jun 22, 2020 at 12:10:00PM +0000, mlelstv@serpens.de wrote:
> Building lang/mercury hangs because it runs a test program as part
> of configure that loops infinitely.
>
> [test program with highly illegal things involving goto]
I remember seeing something else about this recently but I can't find
it now. The upshot was that upstream doesn't see this as a problem.
My inclination would be to prefail the configure test by default and
allow it only on selected platforms where it's known to 'work'.
--
David A. Holland
dholland@netbsd.org
>Unformatted:
(Contact us)
$NetBSD: query-full-pr,v 1.46 2020/01/03 16:35:01 leot Exp $
$NetBSD: gnats_config.sh,v 1.9 2014/08/02 14:16:04 spz Exp $
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