Dear all,
I'm trying to debug my R package with valgrind, but I cannot get past the
point where I load make the data, as valgrind crashes when trying to
extract a single time series object of a multivariate mts object. I'm using
R 2.15.0 with platform x86_64-redhat-linux-gnu (64-bit).
The valgrind.R contains code
data(Seatbelts)
y<-Seatbelts[,"VanKilled"]
And I run valgrind with R -d "valgrind --tool=memcheck --leak-check=yes"
--no-save < valgrind.R
Results look like this:
> data(Seatbelts)
> y<-Seatbelts[,"VanKilled"]
vex amd64->IR: unhandled instruction bytes: 0x66 0xF 0x3A 0xB 0xC0 0xC
==31160== valgrind: Unrecognised instruction at address 0x399fe26990.
==31160== Your program just tried to execute an instruction that Valgrind
==31160== did not recognise. There are two possible reasons for this.
==31160== 1. Your program has a bug and erroneously jumped to a non-code
==31160== location. If you are running Memcheck and you just saw a
==31160== warning about a bad jump, it's probably your program's fault.
==31160== 2. The instruction is legitimate but Valgrind doesn't handle it,
==31160== i.e. it's Valgrind's fault. If you think this is the case or
==31160== you are not sure, please let us know and we'll try to fix it.
==31160== Either way, Valgrind will now raise a SIGILL signal which will
==31160== probably kill your program.
*** caught illegal operation ***
address 0x399fe26990, cause 'illegal opcode'
Traceback:
1: ts(y, start = start(x), frequency = frequency(x))
2: `[.ts`(Seatbelts, , "VanKilled")
3: Seatbelts[, "VanKilled"]
aborting ...
==31160==
==31160== HEAP SUMMARY:
==31160== in use at exit: 29,782,377 bytes in 12,590 blocks
==31160== total heap usage: 30,275 allocs, 17,685 frees, 57,159,124
bytes allocated
==31160==
==31160== LEAK SUMMARY:
==31160== definitely lost: 0 bytes in 0 blocks
==31160== indirectly lost: 0 bytes in 0 blocks
==31160== possibly lost: 0 bytes in 0 blocks
==31160== still reachable: 29,782,377 bytes in 12,590 blocks
==31160== suppressed: 0 bytes in 0 blocks
==31160== Reachable blocks (those to which a pointer was found) are not shown.
==31160== To see them, rerun with: --leak-check=full --show-reachable=yes
==31160==
==31160== For counts of detected and suppressed errors, rerun with: -v
==31160== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 2 from 2)
Illegal instruction (core dumped)
It seems that the crash is caused by the fact that the rows of the
Seatbelts are not defined in assignment, but if I use command
y<-Seatbelts[1:192,"VanKilled"] the resulting object is not a time series
object anymore. Is there some better way to do this?
best regards,
Jouni
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