Re: [MLton] Bug report (Ur/Web, ARM)

Matthew,

Thank you for your thorough reply and explanation.

As you suspected, running mlton with no arguments results in the same error.

Here is the last few lines of output of strace:

open("/lib/arm-linux-gnueabi/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0XX\1\0004\0\0\0"...,
512) = 512
lseek(3, 1231644, SEEK_SET)             = 1231644
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\0\0\0\0\0"...,
1400) = 1400
lseek(3, 1231204, SEEK_SET)             = 1231204
read(3,
"A'\0\0\0aeabi\0\1\35\0\0\0\0054T\0\6\2\10\1\t\1\22\4\24\1\25\1"..., 40) =
40
fstat64(3, {st_mode=S_IFREG|0755, st_size=1233044, ...}) = 0
mmap2(NULL, 1275160, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
= 0xb6d26000
mprotect(0xb6e50000, 32768, PROT_NONE)  = 0
mmap2(0xb6e58000, 12288, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x12a) = 0xb6e58000
mmap2(0xb6e5b000, 9496, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6e5b000
close(3)                                = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb6d25000
set_tls(0xb6d254c0, 0xb6d25b97, 0xb6d25b98, 0xb6d254c0, 0xb6fb8000) = 0
mprotect(0xb6e58000, 8192, PROT_READ)   = 0
mprotect(0xb6f91000, 4096, PROT_READ)   = 0
mprotect(0xb6fb7000, 4096, PROT_READ)   = 0
munmap(0xb6fb0000, 22122)               = 0
sysinfo({uptime=606121, loads=[20768, 9216, 5568] totalram=29065216,
freeram=3432448, sharedram=0, bufferram=1458176} totalswap=1073737728,
freeswap=1069465600, procs=51}) = 0
mmap2(NULL, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0xb6fb0000
mprotect(0xb6fb0000, 4096, PROT_NONE)   = 0
mprotect(0xb6fb1000, 16384, PROT_READ|PROT_WRITE|PROT_EXEC) = 0
mprotect(0xb6fb5000, 4096, PROT_NONE)   = 0
sigaltstack({ss_sp=0xb6fb3000, ss_flags=0, ss_size=8192}, NULL) = 0
mmap2(0xf8000000, 1802240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb6b6d000
write(2, "unhandled exception: ", 21unhandled exception: )   = 21
write(2, "SysErr", 6SysErr)                   = 6
write(2, "\n", 1
)                       = 1
write(2, "MLton bug: ", 11MLton bug: )             = 11
write(2, "unhandled exception in Basis Lib"..., 36unhandled exception in
Basis Library) = 36
write(2, "\nPlease send a bug report to MLt"..., 46
Please send a bug report to [email protected].
) = 46
exit_group(2)                           = ?



I would guess this means that the last call to mmap2() failed?


Thanks,
Jason​

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