One of our other engineers found a UMR (Uninitialized Memory Read) in Lesstif using Purify. See below...
A UMR indicates that the line of code in question tried to access part of a structure which was allocated with malloc() but was never initialized to anything.
The line in question is...
--> if (RCC_WasManaged(kid_geometry->kid))
{
RCC_WasManaged(kid_geometry->kid) = False;
}I'm not sure which part of that it thinks is uninitialized. Although the logic of
only setting the thing to false if it isn't already seems like an odd sort of thing
to do. If it's already False, setting it to False again can't hurt anything and is
quicker than checking anyway.
----- Original Message ----- From: Michael Unverferth
To: Dave Williss
Sent: Friday, October 01, 2004 9:11 AM
Subject: UMR - lesstif
[W] UMR: Uninitialized memory read in XmRCGetKidGeo {1 occurrence}
Reading 1 byte from 0x10d70ae4 (1 byte at 0x10d70ae4 uninitialized)
Address 0x10d70ae4 is 316 bytes into a 328 byte block at 0x10d709a8
Address 0x10d70ae4 points to a malloc'd block in heap 0x082f0000
Thread ID: 0x4ac
Error location
XmRCGetKidGeo [rcutils.c:1220]
XmRCAdjustSize [rcutils.c:1572]
change_managed [rowcolumn.c:1626]
CallChangeManaged [intrinsic.c:250]
CallChangeManaged [intrinsic.c:242]
CallChangeManaged [intrinsic.c:242]
XtRealizeWidget [intrinsic.c:403]
CreateView [tvgroup.c:784]
TNTviewGroupCreate [tvgroup.c:1529]
CB_ActionMain [tvmain.c:546]
XtCallCallbackList [callback.c:660]
ButtonUp [pushbg.c:1663]
input_dispatch [pushbg.c:1815]
XmDispatchGadgetInput [gadgetutil.c:284]
XmMenuBtnUp [rowcolumn.c:3265]
HandleActions [tmstate.c:630]
HandleSimpleState [tmstate.c:872]
XtTranslateEvent [tmstate.c:1084]
XtDispatchEventToWidget [event.c:976]
XtDefaultDispatcher [event.c:1437]
Allocation location
malloc [dbgheap.c:138]
XtMalloc [alloc.c:120]
_XtMalloc [alloc.c:172]
xtWidgetAlloc [create.c:289]
xtCreate [create.c:350]
XtCreateWidget [create.c:557]
XtCreateWidget [create.c:585]
XmCreateCascadeButton [cascadeb.c:1364]
BuildMenu [bldmenu.c:641]
MxCreateMenuBar [bldmenu.c:769]
GRE_VIEW::CreateMenuBar(_WidgetRec *,MENUBARITEM *,UINT) [mdview.c:7723]
GRE_VIEW::CreateMenuBar(_WidgetRec *,UINT) [mdview.c:7773]
CreateView [tvgroup.c:762]
TNTviewGroupCreate [tvgroup.c:1529]
CB_ActionMain [tvmain.c:546]
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