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[bugs:#1247] [bng] Conditional jump or move depends on uninitialised value(s)

Status: open
Group: v0.47
Created: Mon May 16, 2016 02:47 PM UTC by Claude Heiland-Allen
Last Updated: Mon May 16, 2016 02:47 PM UTC
Owner: nobody

pd 0.47-0 on gnu/linux debian jessie

steps to reproduce:

$ valgrind pd
create new patch
ctrl-1 to create new object box
type "bng"
click on the canvas to instantiate the object

now two errors are reported by valgrind

note: the error doesn't occur on additional bng objects, only the first
the error isn't triggered when creating a first bng with ctrl-shift-b

line 371 of g_bang.c is
if (action == LB_LOAD && x->x_gui.x_isa.x_loadinit)

so I guess something might be wrong with x_loadinit initialisation at pd startup?
not familiar with the gui code so that's just a guess

$ valgrind pd
==18158== Memcheck, a memory error detector
==18158== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==18158== Using Valgrind-3.10.0 and LibVEX; rerun with -h for copyright info
==18158== Command: pd
==18158==
==18158== Conditional jump or move depends on uninitialised value(s)
==18158== at 0x45D357: bng_loadbang (g_bang.c:371)
==18158== by 0x475B9F: pd_typedmess (m_class.c:742)
==18158== by 0x475EC1: pd_vmess (m_class.c:801)
==18158== by 0x424AD8: text_setto (g_text.c:1399)
==18158== by 0x45114C: glist_deselect (g_editor.c:254)
==18158== by 0x4570BA: glist_noselect (g_editor.c:268)
==18158== by 0x4570BA: canvas_doclick (g_editor.c:1476)
==18158== by 0x475B9F: pd_typedmess (m_class.c:742)
==18158== by 0x47EBA6: binbuf_eval (m_binbuf.c:773)
==18158== by 0x489A82: socketreceiver_read (s_inter.c:552)
==18158== by 0x488EB0: sys_domicrosleep.constprop.4 (s_inter.c:190)
==18158== by 0x48556D: m_pollingscheduler (m_sched.c:557)
==18158== by 0x48556D: m_mainloop (m_sched.c:617)
==18158== by 0x6410B44: (below main) (libc-start.c:287)
==18158==
==18158== Conditional jump or move depends on uninitialised value(s)
==18158== at 0x45D359: bng_loadbang (g_bang.c:371)
==18158== by 0x475B9F: pd_typedmess (m_class.c:742)
==18158== by 0x475EC1: pd_vmess (m_class.c:801)
==18158== by 0x424AD8: text_setto (g_text.c:1399)
==18158== by 0x45114C: glist_deselect (g_editor.c:254)
==18158== by 0x4570BA: glist_noselect (g_editor.c:268)
==18158== by 0x4570BA: canvas_doclick (g_editor.c:1476)
==18158== by 0x475B9F: pd_typedmess (m_class.c:742)
==18158== by 0x47EBA6: binbuf_eval (m_binbuf.c:773)
==18158== by 0x489A82: socketreceiver_read (s_inter.c:552)
==18158== by 0x488EB0: sys_domicrosleep.constprop.4 (s_inter.c:190)
==18158== by 0x48556D: m_pollingscheduler (m_sched.c:557)
==18158== by 0x48556D: m_mainloop (m_sched.c:617)
==18158== by 0x6410B44: (below main) (libc-start.c:287)
==18158==
==18158==
==18158== HEAP SUMMARY:
==18158== in use at exit: 154,530 bytes in 2,983 blocks
==18158== total heap usage: 6,011 allocs, 3,028 frees, 1,887,653 bytes allocated
==18158==
==18158== LEAK SUMMARY:
==18158== definitely lost: 2,048 bytes in 32 blocks
==18158== indirectly lost: 544 bytes in 64 blocks
==18158== possibly lost: 42,774 bytes in 1,308 blocks
==18158== still reachable: 109,164 bytes in 1,579 blocks
==18158== suppressed: 0 bytes in 0 blocks
==18158== Rerun with --leak-check=full to see details of leaked memory
==18158==
==18158== For counts of detected and suppressed errors, rerun with: -v
==18158== Use --track-origins=yes to see where uninitialised values come from
==18158== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)

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