I'm running into an (almost?) infinite loop when running some
of our tests under the exec utility on Linux (in a 12D build
with gcc 3.4.6 on Red Hat Advanced Server 4, I haven't tried
other configurations). The initial output of strace for one
of the tests, 21.cwchar, is in the attached file. The test
by itself runs fine to completion and doesn't produce any
unusual output (no NULs).
Andrew, when you have a chance, can you take a look at it?
If that's not going to be soon let me know if I should open
an issue.
Martin
execve("./run", ["run", "./21.cwchar"], [/* 35 vars */]) = 0
uname({sys="Linux", node="basari", ...}) = 0
brk(0) = 0x508000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a95556000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/build/sebor/stdcxx-gcc-3.4.6_3-12D/lib/tls/x86_64/libstd12D.so",
O_RDONLY) = -1 ENOENT (No such file or directory)
stat("/build/sebor/stdcxx-gcc-3.4.6_3-12D/lib/tls/x86_64", 0x7fbfffec80) = -1
ENOENT (No such file or directory)
open("/build/sebor/stdcxx-gcc-3.4.6_3-12D/lib/tls/libstd12D.so", O_RDONLY) = -1
ENOENT (No such file or directory)
stat("/build/sebor/stdcxx-gcc-3.4.6_3-12D/lib/tls", 0x7fbfffec80) = -1 ENOENT
(No such file or directory)
open("/build/sebor/stdcxx-gcc-3.4.6_3-12D/lib/x86_64/libstd12D.so", O_RDONLY) =
-1 ENOENT (No such file or directory)
stat("/build/sebor/stdcxx-gcc-3.4.6_3-12D/lib/x86_64", 0x7fbfffec80) = -1
ENOENT (No such file or directory)
open("/build/sebor/stdcxx-gcc-3.4.6_3-12D/lib/libstd12D.so", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220\360"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1019755, ...}) = 0
mmap(NULL, 1945424, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x2a95557000
mprotect(0x2a95613000, 1175376, PROT_NONE) = 0
mmap(0x2a95713000, 32768, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xbc000) = 0x2a95713000
mmap(0x2a9571b000, 94032, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2a9571b000
mprotect(0x7fbffff000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_GROWSDOWN) = 0
close(3) = 0
open("/build/sebor/stdcxx-gcc-3.4.6_3-12D/lib/libm.so.6", O_RDONLY) = -1 ENOENT
(No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=190323, ...}) = 0
mmap(NULL, 190323, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2a95732000
close(3) = 0
open("/lib64/tls/libm.so.6", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360=\200"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=613297, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a95761000
mmap(0x381b800000, 1593800, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0x381b800000
mprotect(0x381b885000, 1049032, PROT_NONE) = 0
mmap(0x381b984000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x84000) = 0x381b984000
close(3) = 0
open("/build/sebor/stdcxx-gcc-3.4.6_3-12D/lib/libpthread.so.0", O_RDONLY) = -1
ENOENT (No such file or directory)
open("/lib64/tls/libpthread.so.0", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 V\0\034"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=106203, ...}) = 0
mmap(0x381c000000, 1131384, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0x381c000000
mprotect(0x381c00f000, 1069944, PROT_NONE) = 0
mmap(0x381c10f000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf000) = 0x381c10f000
mmap(0x381c111000, 13176, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x381c111000
close(3) = 0
open("/build/sebor/stdcxx-gcc-3.4.6_3-12D/lib/libc.so.6", O_RDONLY) = -1 ENOENT
(No such file or directory)
open("/lib64/tls/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\240\304"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1493409, ...}) = 0
mmap(0x381b500000, 2310088, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0x381b500000
mprotect(0x381b62b000, 1085384, PROT_NONE) = 0
mmap(0x381b72b000, 20480, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x12b000) = 0x381b72b000
mmap(0x381b730000, 16328, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x381b730000
close(3) = 0
open("/build/sebor/stdcxx-gcc-3.4.6_3-12D/lib/libgcc_s.so.1", O_RDONLY) = -1
ENOENT (No such file or directory)
open("/build/sebor/stdcxx-gcc-3.4.6_3-12D/lib/libgcc_s.so.1", O_RDONLY) = -1
ENOENT (No such file or directory)
open("/lib64/libgcc_s.so.1", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>[EMAIL PROTECTED]"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=47496, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a95762000
mmap(0x381dc00000, 1091904, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0x381dc00000
mprotect(0x381dc0b000, 1046848, PROT_NONE) = 0
mmap(0x381dd0a000, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa000) = 0x381dd0a000
close(3) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a95763000
mprotect(0x381b72b000, 8192, PROT_READ) = 0
arch_prctl(ARCH_SET_FS, 0x2a957646a0) = 0
munmap(0x2a95732000, 190323) = 0
set_tid_address(0x2a95764730) = 16606
rt_sigaction(SIGRTMIN, {0x381c005190, [], SA_RESTORER|SA_SIGINFO,
0x381c00c430}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x381c005210, [], SA_RESTORER|SA_RESTART|SA_SIGINFO,
0x381c00c430}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=10240*1024, rlim_max=RLIM_INFINITY}) = 0
_sysctl({{CTL_KERN, KERN_VERSION}, 2, 0x7fbffff4c0, 35, (nil), 0}) = 0
brk(0) = 0x508000
brk(0x529000) = 0x529000
fstat(1, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a95732000
write(1, "NAME STATUS"..., 110NAME
STATUS WARN ASSERTS FAILED PERCNT USER SYS REAL
21.cwchar ) = 110
open("./21.cwchar.log", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./21.cwchar.o.log", O_RDONLY) = -1 ENOENT (No such file or directory)
stat("./21.cwchar", {st_mode=S_IFREG|0755, st_size=168826, ...}) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0x2a95764730) = 16607
times({tms_utime=0, tms_stime=0, tms_cutime=0, tms_cstime=0}) = 559762786
rt_sigaction(SIGALRM, {0x403f00, [], SA_RESTORER, 0x381c00c430}, NULL, 8) = 0
rt_sigaction(SIGHUP, {0x403f20, [], SA_RESTORER, 0x381c00c430}, NULL, 8) = 0
rt_sigaction(SIGINT, {0x403f20, [], SA_RESTORER, 0x381c00c430}, NULL, 8) = 0
rt_sigaction(SIGQUIT, {0x403f20, [], SA_RESTORER, 0x381c00c430}, NULL, 8) = 0
rt_sigaction(SIGTERM, {0x403f20, [], SA_RESTORER, 0x381c00c430}, NULL, 8) = 0
alarm(10) = 0
wait4(16607, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WSTOPPED|WCONTINUED,
NULL) = 16607
--- SIGCHLD (Child exited) @ 0 (0) ---
alarm(0) = 10
kill(4294950689, SIGHUP) = -1 ESRCH (No such process)
times({tms_utime=0, tms_stime=0, tms_cutime=0, tms_cstime=0}) = 559762787
open("./21.cwchar.out", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=182890591197, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x2a95733000
read(3, "# INFO (S1) (10 lines):\n# TEXT: "..., 4096) = 4096
read(3, "ed return type const wchar_t*, g"..., 4096) = 4096
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) =
4096
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) =
4096
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) =
4096
[...repeats indefinitely...]
