Bug 276780

Version:           3.6.0 (using KDE 4.6.3) 
OS:                Linux

Hi

I am using the fftw3 library for fast fourier transform.
It always exits with an error of "Illegal Instruction"
The mesage I get is this

vex x86->IR: unhandled instruction bytes: 0x66 0xF 0x3A 0x22

The instruction that causes this in my program always happens when I try to create the fft plan using
fftw_plan_r2r_1d(n_time_points, fftw_real_in         , fftw_half_complex_out , FFTW_R2HC , FFTW_MEASURE);

Reproducible: Always

Steps to Reproduce:
Compile the file below using 
 g++ ./main.cpp -lfftw3 -o myfile

and then run valgrind using 

valgrind --leak-check=full --log-file=valgrind_hispice.txt ./myfile


---------------------------------------

#include <fftw3.h>





int main (int argc, char **argv)
{
 
 int n_time_points = 20;
  double* fftw_real_in          = (double *) fftw_malloc(sizeof(double) * n_time_points);
   double* fftw_real_out         = (double *) fftw_malloc(sizeof(double) * n_time_points);
    double* fftw_half_complex_in  = (double *) fftw_malloc(sizeof(double) * n_time_points);
    double* fftw_half_complex_out = (double *) fftw_malloc(sizeof(double) * n_time_points);

    fftw_plan hb_fft_plan     = fftw_plan_r2r_1d(n_time_points, fftw_real_in         , fftw_half_complex_out , FFTW_R2HC , FFTW_MEASURE);

}

Actual Results:  
The log file is below
---------------------

==27142== Memcheck, a memory error detector
==27142== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.
==27142== Using Valgrind-3.6.0.SVN-Debian and LibVEX; rerun with -h for copyright info
==27142== Command: ./myfile
==27142== Parent PID: 2625
==27142== 
vex x86->IR: unhandled instruction bytes: 0x66 0xF 0x3A 0x22
==27142== valgrind: Unrecognised instruction at address 0x809e5e6.
==27142== Your program just tried to execute an instruction that Valgrind
==27142== did not recognise.  There are two possible reasons for this.
==27142== 1. Your program has a bug and erroneously jumped to a non-code
==27142==    location.  If you are running Memcheck and you just saw a
==27142==    warning about a bad jump, it's probably your program's fault.
==27142== 2. The instruction is legitimate but Valgrind doesn't handle it,
==27142==    i.e. it's Valgrind's fault.  If you think this is the case or
==27142==    you are not sure, please let us know and we'll try to fix it.
==27142== Either way, Valgrind will now raise a SIGILL signal which will
==27142== probably kill your program.
==27142== 
==27142== Process terminating with default action of signal 4 (SIGILL)
==27142==  Illegal opcode at address 0x809E5E6
==27142==    at 0x809E5E6: fftw_mkstride (in /home/egad/projects/HiSPICE/Hispice/myfile)
==27142== 
==27142== HEAP SUMMARY:
==27142==     in use at exit: 30,264 bytes in 631 blocks
==27142==   total heap usage: 664 allocs, 33 frees, 85,988 bytes allocated
==27142== 
==27142== 20 bytes in 1 blocks are definitely lost in loss record 1 of 9
==27142==    at 0x4024F20: malloc (vg_replace_malloc.c:236)
==27142==    by 0x8048B08: fftw_malloc_plain (in /home/egad/projects/HiSPICE/Hispice/myfile)
==27142== 
==27142== 5,576 bytes in 168 blocks are possibly lost in loss record 7 of 9
==27142==    at 0x4024F20: malloc (vg_replace_malloc.c:236)
==27142==    by 0x8048B08: fftw_malloc_plain (in /home/egad/projects/HiSPICE/Hispice/myfile)
==27142== 
==27142== 9,224 bytes in 443 blocks are possibly lost in loss record 8 of 9
==27142==    at 0x4024F20: malloc (vg_replace_malloc.c:236)
==27142==    by 0x8048B08: fftw_malloc_plain (in /home/egad/projects/HiSPICE/Hispice/myfile)
==27142==    by 0x42DB027: ???
==27142== 
==27142== LEAK SUMMARY:
==27142==    definitely lost: 20 bytes in 1 blocks
==27142==    indirectly lost: 0 bytes in 0 blocks
==27142==      possibly lost: 14,800 bytes in 611 blocks
==27142==    still reachable: 15,444 bytes in 19 blocks
==27142==         suppressed: 0 bytes in 0 blocks
==27142== Reachable blocks (those to which a pointer was found) are not shown.
==27142== To see them, rerun with: --leak-check=full --show-reachable=yes
==27142== 
==27142== For counts of detected and suppressed errors, rerun with: -v
==27142== ERROR SUMMARY: 3 errors from 3 contexts (suppressed: 17 from 6)

Expected Results:  
I should not have gotten the ILLEGAL instruction