Re: [Discuss-gnuradio] dynamic_cast on ARM Android

[Riadh Elloumi]

Hi all,

It was a bug of mine. I should have used self() for interconnecting
blocks in gr_hier_block2 rather than gnuradio::get_initial_sptr (this).

Best reagrds,

Riadh.

On Mon, 2011-07-11 at 11:14 +0100, Riadh Elloumi wrote:
> Hi all,
> 
> I tried to run gnuradio in order to decode DAB+ form a file on an ARM
> Cortex-A8 (OMAP 3) with Android. I translated the specific Python code
> to C++ and used gnu libstdc++ with boost. I connected the blocks using
> the method connect of gr_hier_block and gr_top_block.
> 
> The result is SIGSEGV in dynamic_cast when connecting blocks. The exact
> line should be: gnuradio-core/src/lib/runtime/gr_sptr_magic.cc:54:
> 
>     gr_hier_block2 *hb2 = dynamic_cast<gr_hier_block2 *>(p);
> 
> Did you find such a problem before? How to solve it? My idea is to
> rewrite bock connections without dynamic_cast.
> 
> The exact gdb output is:
> 0x0036ab4a in __cxxabiv1::__dynamic_cast (src_ptr=0x3e0b80,
> src_type=<value optimized out>, dst_type=0x3c9af0, src2dst=<value
> optimized out>) at /tmp/ndk-digit/src/build/../gcc/gcc-4.4.3/libstdc
> ++-v3/libsupc++/dyncast.cc:47
> 47    /tmp/ndk-digit/src/build/../gcc/gcc-4.4.3/libstdc++-v3/libsupc
> ++/dyncast.cc: No such file or directory.
>       in /tmp/ndk-digit/src/build/../gcc/gcc-4.4.3/libstdc++-v3/libsupc
> ++/dyncast.cc
> 
> The backtrace is:
> (gdb) bt
> #0  0x0036ab4a in __cxxabiv1::__dynamic_cast (src_ptr=0x3e0b80,
> src_type=<value optimized out>, dst_type=0x3c9af0, src2dst=<value
> optimized out>) at /tmp/ndk-digit/src/build/../gcc/gcc-4.4.3/libstdc
> ++-v3/libsupc++/dyncast.cc:47
> #1  0x000da704 in gnuradio::detail::sptr_magic::fetch_initial_sptr
> (p=0x3e0b80)
> at 
> /home/riadh/dev/p8/trunk/soft/Didon/Soft/Sources/gnuradio-core/src/lib/runtime/gr_sptr_magic.cc:54
> #2  0x0002a824 in gnuradio::get_initial_sptr<DetectNull> (p=0x3e0b80)
> at 
> /home/riadh/dev/p8/trunk/soft/Didon/Soft/Sources/gnuradio-core/src/lib/runtime/gr_sptr_magic.h:47
> #3  0x00028ce8 in dab_make_null_detect (length=2656, debug=false)
> at /home/riadh/dev/p8/trunk/soft/Didon/Soft/Sources/python/detect_null.cpp:25
> #4  0x0001cfc0 in OfdmDemod::OfdmDemod (this=0x3dc408,
> dab_params=0x3dc328, rx_params=0x3dc3c0, verbose=true, debug=true)
> at /home/riadh/dev/p8/trunk/soft/Didon/Soft/Sources/python/ofdm.cpp:92
> #5  0x00017474 in dab_make_ofdm_demod (dab_params=0x3dc328,
> rx_params=0x3dc3c0, verbose=true, debug=true)
> at /home/riadh/dev/p8/trunk/soft/Didon/Soft/Sources/python/ofdm.cpp:24
> #6  0x0000f878 in dab_rx_main ()
> at 
> /home/riadh/dev/p8/trunk/soft/Didon/Soft/Sources/python/dab_rx_constellation.cpp:93
> #7  0x0000e780 in thread_entry (data=0x0)
> at /home/riadh/dev/p8/trunk/soft/Didon/Soft/Sources/main/didon_main.cpp:82
> #8  0x00352584 in thread_header (data=0x3d401c)
> at 
> /home/riadh/dev/p8/trunk/soft/CommonSoft/ParrotOS/core/src/posix/posix_thread.c:353
> #9  0xafe0fe34 in __thread_entry (func=0x3523e8 <thread_header>,
> arg=0x3d401c, tls=<value optimized out>) at
> bionic/libc/bionic/pthread.c:188
> #10 0xafe0f900 in pthread_create (thread_out=<value optimized out>,
> attr=0x78, start_routine=0x3523e8 <thread_header>, arg=0x3d401c) at
> bionic/libc/bionic/pthread.c:324
> #11 0x00000000 in ?? ()
> 
> Best reagrds,
> 
> Riadh.
> 
> 
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