dtcreate crashed on 64-bit system when clicking
"Find Set.." button.
Crash happens in libXm:
new_w=0x805db4300, args=0x7fffffffb430, num_args=0x7fffffffb3dc)
at Form.c:1955
$1 = {att = {{type = 4 '\004', w = 0x805db3700, percent = 0, offset = 0,
value = 0, tempValue = 0}, {type = 1 '\001', w = 0x0, percent = 0,
offset = 10, value = 0, tempValue = 0}, {type = 3 '\003',
w = 0x805db3700, percent = 0, offset = 0, value = 0, tempValue = 0}, {
type = 3 '\003', w = 0x800000000, percent = 0, offset = 10, value = 0,
tempValue = 0}}, next_sibling = 0x0, sorted = 0 '\0',
resizable = 1 '\001', preferred_width = 0, preferred_height = 0}
(...)
at icon_selection_dialog.c:1768
1767 /* Creation of icon_scrolled_win */
1768 icon_scrolled_win = XtVaCreateManagedWidget( "icon_scrolled_win",
1769 xmScrolledWindowWidgetClass,
1770 icon_selection_dialog,
1771 XmNscrollingPolicy, XmAUTOMATIC,
1772 /* XmNnavigationType, XmTAB_GROUP, */
1773 XmNx, 282,
1774 XmNy, 84,
1775 XmNscrollBarDisplayPolicy, XmAS_NEEDED,
1776 XmNrightOffset, 10,
1777 XmNrightAttachment, XmATTACH_FORM,
1778 XmNtopOffset, 0,
1779 XmNtopWidget, icon_container_label,
1780 XmNtopAttachment, XmATTACH_WIDGET,
1781 XmNleftOffset, 0,
1782 XmNleftWidget, icon_container_label,
1783 XmNleftAttachment, XmATTACH_OPPOSITE_WIDGET,
1784 XmNbottomOffset, 10,
1785 XmNbottomWidget, XmATTACH_NONE,
1786 XmNbottomAttachment, XmATTACH_WIDGET,
1787 NULL );
What happens here is that ConstraintInitialize receives
four constraints, the last one is this:
{ type = 3 '\003', /* XmATTACH_WIDGET */
w = 0x800000000, /* malformed XmATTACH_NONE ???
percent = 0,
offset = 10, /* specified as XmNbottomOffset */
value = 0,
tempValue = 0}
XmATTACH_* values are defined in <Xm/Xm.h> as follows:
505 enum{ XmATTACH_NONE, XmATTACH_FORM,
506 XmATTACH_OPPOSITE_FORM, XmATTACH_WIDGET,
507 XmATTACH_OPPOSITE_WIDGET, XmATTACH_POSITION,
508 XmATTACH_SELF
509 } ;
What is not clear to why XmATTACH_NONE - which should be (int)0 -
becomes 0x800000000 - looks like a 64 bit bug somewhere.
Providing a long value on None (0L) as in this change fixes the
problem.
I understand is that it possible to use such an "empty" widget
is to create additional space at the bottom of the newly created
"icon_scrolled_win".
What needs to be clarified - shouldn't be such an (int) value be
automatically promoted to (long) (or XtArgVal, XtPointer, ...)
and preserve the value 0? Lots of parameters seem to be
passed as ints (for example dimensions) and they do not
appear to cause any trouble.
- Fix missing prototypes
- Fix some 64-bit related problems (XtVaGetValues)
- Fix crash on dtcreate startup in create_applicationShell1()
- Add XmeFlushIconFileCache() prototype from <Xm/IconFileP.h>
According to the spec, blank lines in message catalogs or lines
beginning with '$ ' are valid comments.
However, there were many cases where lines in the message catalogs
contained just a single '$', without the required space after it.
Under linux, this caused 126766 error lines (in my builds) of the
form:
... unknown directive `': line ignored
This also causes gencat to exit with a non-0 exit code. Even though
gencat says it ignores the line, it really doesn't.
An early porting change to programs/localized/util/merge.c was made to
ignore this return value on linux. This hack has now been removed.
Build logs are a lot smaller and cleaner now.
GetBaseName causes segfaults, because when the pathname
ends in a "/" it returns NULL. This happens when trying
to give a valid filename to dtcreate for an icon.
ProcessExecString thought it was returning an array of size 3; however
in C arrays are second-class and there is no direct way to return an
array like this; GCC warning triggered because it was actually
just returning a pointer to local storage. Fixed using malloc.
Also fix some obviously wrong usages of sizeof, although they were
relatively harmless. A little other warning quieting using 0 instead of
NULL.
This code always buffer overflowed, because exactly 2 bytes
less than were used were allocated. This led to dtcreate
crashing when hitting "Find Set..."
Added proper SharedDtSvcReqs in lnxLib.tmpl and CplusplusLibC in
linux.cf. This allows the libstdc++ dependancy to be properly
declared for libDtSvc so that it is not neccessary to hardcode 'CCLINK
= g++' in the Imakefiles of programs linking angainst libDtSvc.
Marcin Cieslak