From: Ken Brown <kbrown@cornell.edu>
To: cygwin@cygwin.com, Girish Joglekar <girish53@gmail.com>
Subject: Re: Cygwin 64 problem
Date: Sun, 04 Dec 2016 15:59:00 -0000 [thread overview]
Message-ID: <dcc15a97-ca2d-90ee-a7a4-6106db368f76@cornell.edu> (raw)
In-Reply-To: <37067fb7-8250-5aff-ebb5-8abe6746c8f6@cornell.edu>
On 11/29/2016 3:14 PM, Ken Brown wrote:
> I've looked at this a little, and the crash occurs because of a bad value of a pointer to a font list. I'm attaching an annotated transcript of a gdb session that illustrates this. I didn't try to figure out where the bad pointer came from.
I've done that now. There are three places in mosprshx.c where you cast a pointer to a pointer to an object of a different size. Interesting things happen when you dereference that pointer. The following patch gets rid of the crash:
--- mosprshx.c~ 2016-12-04 10:02:36.706325200 -0500
+++ mosprshx.c 2016-12-04 10:28:35.160038200 -0500
@@ -235,7 +235,7 @@
}
XtSetArg(al[ac],XmNcolumns,longestFixedColumnSize+1); ac++;
if(toValue.addr) {
- XtSetArg(al[ac],XmNfontList,*(unsigned int *)toValue.addr); ac++;
+ XtSetArg(al[ac],XmNfontList,*(XtArgVal *)toValue.addr); ac++;
}
for(i1=0 ; i1<nRows ; i1++) {
sprintf(widgetName,"fixedColumnRow%d",i1);
@@ -265,7 +265,7 @@
XtSetArg(al[ac],XmNcolumns,cellSize); ac++;
}
if(toValue.addr) {
- XtSetArg(al[ac],XmNfontList,*(unsigned int *)toValue.addr); ac++;
+ XtSetArg(al[ac],XmNfontList,*(XtArgVal *)toValue.addr); ac++;
}
for(j1=0 ; j1<nColumns ; j1++) {
sprintf(widgetName,"fixedRowColumn%d",j1);
@@ -295,7 +295,7 @@
XtSetArg(al[ac],XmNmaxLength,cellSize); ac++;
}
if(toValue.addr) {
- XtSetArg(al[ac],XmNfontList,*(unsigned int *)toValue.addr); ac++;
+ XtSetArg(al[ac],XmNfontList,*(XtArgVal *)toValue.addr); ac++;
}
sprintf(widgetName,"column%drow%d",j1,i1);
variableRowAndColumnTF[loc] = XmCreateTextField(variableColumnFM[j1],widgetName,al,ac); loc++;
Ken
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prev parent reply other threads:[~2016-12-04 15:59 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAGX=k3HczQGx=51xRwyKrwpKTMqaOVqxj+ud4UH=i1yCPAFGWQ@mail.gmail.com>
2016-11-28 12:03 ` Ken Brown
2016-11-28 14:34 ` Duncan Roe
2016-11-28 16:19 ` Ken Brown
2016-11-30 3:01 ` Ken Brown
2016-12-04 15:59 ` Ken Brown [this message]
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