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Re: crash when invoking a method on a struct returned from a function

From: Bruno Haible
Subject: Re: crash when invoking a method on a struct returned from a function
Date: Mon, 08 Jun 2020 01:23:08 +0200
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A similar crash occurs, with the same data files, by evaluating

$ poke
.load gmo.pk
.file de.mo
(gmo @ 0#B).get_translation_slow("Hello, world!")

Stack trace:
#0  0x00007ffff6ecb428 in __GI_raise (sig=sig@entry=6) at 
#1  0x00007ffff6ecd02a in __GI_abort () at abort.c:89
#2  0x00007ffff6ec3bd7 in __assert_fail_base (fmt=<optimized out>, 
    assertion=assertion@entry=0x4c4bf0 "PVM_IS_SCT (sct) && PVM_IS_STR (name)", 
file=file@entry=0x4c4be0 "pvm-val.c", 
    line=line@entry=169, function=function@entry=0x4c4f20 
<__PRETTY_FUNCTION__.7355> "pvm_ref_struct") at assert.c:92
#3  0x00007ffff6ec3c82 in __GI___assert_fail (assertion=0x4c4bf0 "PVM_IS_SCT 
(sct) && PVM_IS_STR (name)", file=0x4c4be0 "pvm-val.c", 
    line=169, function=0x4c4f20 <__PRETTY_FUNCTION__.7355> "pvm_ref_struct") at 
#4  0x000000000046f218 in pvm_ref_struct (sct=0, name=8137766) at pvm-val.c:169
#5  0x000000000049e946 in pvm_execute_or_initialize (jitter_initialize=false, 
    jitter_original_state=0x6f9310) at ./pvm.jitter:3739
#6  0x0000000000482e09 in pvm_execute_executable_routine (er=0x100e230, 
s=0x6f9310) at ./pvm.jitter:527
#7  0x000000000047c156 in pvm_execute_routine (r=0xa68650, s=0x6f9310) at 
#8  0x000000000046e947 in pvm_run (apvm=0x6f9310, program=0xf8ba80, 
res=0x7fffffffd5a0) at pvm.c:125
#9  0x0000000000416b03 in pkl_execute_statement (compiler=0x701110, 
    buffer=0xa42100 "(gmo @ 0#B).get_translation_slow(\"Hello, world!\");", 
end=0x7fffffffd5e0, val=0x7fffffffd5a0) at pkl.c:363
#10 0x00000000004147b9 in pk_compile_statement (pkc=0x6fcdc0, buffer=0xa42100 
"(gmo @ 0#B).get_translation_slow(\"Hello, world!\");", 
    end=0x7fffffffd5e0, valp=0x7fffffffd5e8) at libpoke.c:102
#11 0x0000000000406c67 in pk_cmd_exec (str=0x1012780 "(gmo @ 
0#B).get_translation_slow(\"Hello, world!\")") at pk-cmd.c:618
#12 0x000000000040591d in pk_repl () at pk-repl.c:339
#13 0x0000000000404d07 in main (argc=1, argv=0x7fffffffd7f8) at poke.c:681

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