Thread View: comp.sys.mac.programmer.codewarrior
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2 total messages
Started by Wade Williams
Fri, 08 Mar 2002 22:15
App crashes on object declaration
Author: Wade Williams
Date: Fri, 08 Mar 2002 22:15
Date: Fri, 08 Mar 2002 22:15
59 lines
3610 bytes
3610 bytes
I've got an application which uses a carbonized GUSI. When the app
makes a simple call to fopen(), which GUSI overrides, the app crashes
on an object declaration. (Note that under Classic I've used GUSI in
this project fine, and the author of the Carbon version of GUSI uses it
without problem)
The error occurs when it's attempting to create an instance of
GUSIErrorSaver. It does not actually enter the constructor.
// The next calls also need the services of [[GUSIDeviceRegistry]].
[[open]] used
// both the [[GUSIDeviceRegistry]] and the [[GUSIDescriptorTable]].
//
// <POSIX function wrappers>=
int open(const char * path, int mode, ...)
{
GUSIErrorSaver saveError; <<-----error occurs right here
GUSIDeviceRegistry * factory = GUSIDeviceRegistry::Instance();
GUSIDescriptorTable * table = GUSIDescriptorTable::Instance();
GUSISocket * sock;
int fd;
and here it is in mixed source / assembly:
{
004EFC60: 7C0802A6 mflr r0
004EFC64: BEA1FFD4 stmw r21,-44(SP)
004EFC68: 90010008 stw r0,8(SP)
004EFC6C: 9421FF90 stwu SP,-112(SP)
004EFC70: 90610088 stw r3,136(SP)
004EFC74: 9081008C stw r4,140(SP)
004EFC78: 90A10090 stw r5,144(SP)
004EFC7C: 90C10094 stw r6,148(SP)
004EFC80: 90E10098 stw r7,152(SP)
004EFC84: 9101009C stw r8,156(SP)
004EFC88: 912100A0 stw r9,160(SP)
004EFC8C: 914100A4 stw r10,164(SP)
004EFC90: 3BC26C74 addi r30,RTOC,27764
004EFC94: 83E287B8 lwz r31,-30792(RTOC)
GUSIErrorSaver saveError;
004EFC98: 801F0000 lwz r0,0(r31) <--error occurs here - r31 ==
0x00000000
I don't see anything wrong with the GUSIErrorSaver class definition
(it's very simple), so I'm not sure where the error is coming from.
It was suggested to me that it might be a problem with my runtime, but
I use MSL_All_Carbon_D.Lib (and of course CarbonLib), which is what is
in the stationary.
I have been unable to recreate the error in a smaller project, so I
agree with the theory that it might be something wrong with my linking,
runtime, etc.
Has anyone seen similar errors before? Any thoughts?
Thanks,
Wade
Re: App crashes on object declaration
Author: meeroh
Date: Sat, 09 Mar 2002 05:21
Date: Sat, 09 Mar 2002 05:21
56 lines
3008 bytes
3008 bytes
In article <080320021615353314%wadesworld@mac.com>,
Wade Williams <wadesworld@mac.com> wrote:
>I've got an application which uses a carbonized GUSI. When the app
>makes a simple call to fopen(), which GUSI overrides, the app crashes
>on an object declaration. (Note that under Classic I've used GUSI in
>this project fine, and the author of the Carbon version of GUSI uses it
>without problem)
>
>The error occurs when it's attempting to create an instance of
>GUSIErrorSaver. It does not actually enter the constructor.
>
>// The next calls also need the services of [[GUSIDeviceRegistry]].
>[[open]] used
>// both the [[GUSIDeviceRegistry]] and the [[GUSIDescriptorTable]].
>//
>// <POSIX function wrappers>=
>int open(const char * path, int mode, ...)
>{
> GUSIErrorSaver saveError; <<-----error occurs right here
> GUSIDeviceRegistry * factory = GUSIDeviceRegistry::Instance();
> GUSIDescriptorTable * table = GUSIDescriptorTable::Instance();
> GUSISocket * sock;
> int fd;
>
>and here it is in mixed source / assembly:
>
>{
>004EFC60: 7C0802A6 mflr r0
>004EFC64: BEA1FFD4 stmw r21,-44(SP)
>004EFC68: 90010008 stw r0,8(SP)
>004EFC6C: 9421FF90 stwu SP,-112(SP)
>004EFC70: 90610088 stw r3,136(SP)
>004EFC74: 9081008C stw r4,140(SP)
>004EFC78: 90A10090 stw r5,144(SP)
>004EFC7C: 90C10094 stw r6,148(SP)
>004EFC80: 90E10098 stw r7,152(SP)
>004EFC84: 9101009C stw r8,156(SP)
>004EFC88: 912100A0 stw r9,160(SP)
>004EFC8C: 914100A4 stw r10,164(SP)
>004EFC90: 3BC26C74 addi r30,RTOC,27764
>004EFC94: 83E287B8 lwz r31,-30792(RTOC)
> GUSIErrorSaver saveError;
>004EFC98: 801F0000 lwz r0,0(r31) <--error occurs here - r31 ==
>0x00000000
From what I see here it seems that the ctor is inlined or you have
other optimizations on. You should try turning off all optimizations and
inlining to see whether that makes it clearer what line of code you are
crashing on.
hth
meeroh
--
Hire me: <http://meeroh.org/hire.html>
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