id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc,lang,patch,platform
992,Memory errors when evaling invalid :vtable methods in a namespace,dukeleto,,"This code, which is meant to test that an invalid :vtable method throws the correct exception:
{{{
.sub 'main' :main
    .include 'test_more.pir'
    throws_like(<<'CODE',':s but was used with \:vtable')
.namespace [ ""Test"" ]

.sub monkey :method :vtable(""not_in_the_vtable"")
    .param int key
    .return(""monkey"")
.end
CODE

.end
}}}
causes memory corruption errors:
{{{
parrot(23952) malloc: *** error for object 0x4154: Non-aligned pointer being freed
*** set a breakpoint in malloc_error_break to debug
parrot(23952) malloc: *** error for object 0xc: Non-aligned pointer being freed
*** set a breakpoint in malloc_error_break to debug
parrot(23952) malloc: *** error for object 0x3000: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
parrot(23952) malloc: *** error for object 0xa164: Non-aligned pointer being freed
*** set a breakpoint in malloc_error_break to debug
parrot(23952) malloc: *** error for object 0x920d70: double free
*** set a breakpoint in malloc_error_break to debug
}}}

A backtrace for darwin-x86/gcc 4.0.1 :
{{{
(gdb) bt
#0  0x91ed74a9 in malloc_error_break ()
#1  0x91ed2497 in szone_error ()
#2  0x91dfc523 in szone_free ()
#3  0x91dfc38d in free ()
#4  0x0049209e in mem_sys_free (from=0x4154) at src/gc/alloc_memory.c:325
#5  0x006af616 in free_sym (r=0x91b4d0) at compilers/imcc/symreg.c:1287
#6  0x006c288b in imcc_compile (interp=0x9017c0, s=0x209aa00 "".namespace [\""PGE\"";\""Grammar\""]\n      .sub \""_regex10\"" :method \n          .param pmc adverbs   :slurpy :named\n          .local pmc mob\n          .const 'Sub' corou = \""_regex10_corou\""\n          $P0 = corou""..., pasm_file=0, error_message=0xbffff040) at compilers/imcc/parser_util.c:723
#7  0x006c2d45 in imcc_compile_pir_ex (interp=0x9017c0, s=0x209aa00 "".namespace [\""PGE\"";\""Grammar\""]\n      .sub \""_regex10\"" :method \n          .param pmc adverbs   :slurpy :named\n          .local pmc mob\n          .const 'Sub' corou = \""_regex10_corou\""\n          $P0 = corou""...) at compilers/imcc/parser_util.c:874
#8  0x004b6120 in pcf_P_Jt (interp=0x9017c0, self=0xe81b0) at src/nci.c:237
#9  0x005e0a41 in Parrot_NCI_invoke (interp=0x9017c0, pmc=0xe81b0, next=0xa0b3b0) at nci.pmc:338
#10 0x004012f2 in Parrot_invokecc_p (cur_opcode=0xa0b3a8, interp=0x9017c0) at core.ops:433
#11 0x004fcf3e in runops_slow_core (interp=0x9017c0, runcore=0x90b8a0, pc=0xa0b3a8) at src/runcore/cores.c:1013
#12 0x004fb4aa in runops_int (interp=0x9017c0, offset=1318) at src/runcore/main.c:629
#13 0x004a6135 in runops (interp=0x9017c0, offs=0) at src/call/ops.c:119
#14 0x004a6477 in runops_args (interp=0x9017c0, sub=0xe8270, obj=0x203b2f0, meth_unused=0x0, sig=0x6c88a2 ""vP"", ap=0xbffff32c ""??\016"") at src/call/ops.c:269
#15 0x004a718a in Parrot_runops_fromc_args (interp=0x9017c0, sub=0xe8270, sig=0x6c88a2 ""vP"") at src/call/ops.c:338
#16 0x00481a61 in Parrot_runcode (interp=0x9017c0, argc=1, argv=0xbffff430) at src/embed.c:852
#17 0x006ad507 in imcc_run_pbc (interp=0x9017c0, obj_file=0, output_file=0x0, argc=1, argv=0xbffff430) at compilers/imcc/main.c:797
#18 0x006ae1b9 in imcc_run (interp=0x9017c0, sourcefile=0xbffff54e ""boom.pir"", argc=1, argv=0xbffff430) at compilers/imcc/main.c:1088
#19 0x00002559 in main (argc=1, argv=0xbffff430) at src/main.c:60
}}}",bug,closed,normal,,testing,1.5.0,medium,fixed,,,,,