Hi,
extern "C"
{
class A
{
public:
private:
char string[SIZE];
};
void test1(void)
{
A obj;
try {
throw obj;
}
catch (A &e)
{
printf(" exception ! \n ");
}
}
}//extern "C"
when I define "obj" as a global variable ,static variable or dynamic
variable(allocate space with "malloc") ,there is no error occured;but when
I define "obj" as a local variable in stack area,program will crash.
Is the reason that the size of variable "obj" is bigger than the stack
size?
Does the setjmp/longjmp exception handling mechanism have bugs ?
My gcc version is gcc4.1.1 and my compiler is a cross compiler with
TARGET=sh-elf,HOST=i686-pc-cygwin,BUILD=i686-pc-cygwin.
expecting your answer.
--David
From: Andrew Haley <aph@xxxxxxxxxx>
To: 王 刚伟 <gwwang10@xxxxxxxxxxx>
CC: gcc-help@xxxxxxxxxxx
Subject: Re: gcc exception handle
Date: Mon, 29 Jan 2007 11:11:36 +0000
?瞻 writes:
> Hi,
>
> Here is My test function :
>
> class A
> {
> public:
> private:
> char string[SIZE];
> };
>
> void test1(void)
> {
> A obj;
>
> try
> {
> throw obj;
> }
> catch (A &e)
> {
> printf("exception ! \n");
> }
> }
>
> when SIZE <= 68,"__cxa_allocate_exception" allocates space for the
> exception successfully,after "__cxa_throw" is
called,"__cxa_begin_catch" is
> called,and the statement "printf..." in the catch block can be
executed.
> when SIZE > 68, ,"__cxa_allocate_exception" also allocates space for
the
> exception successfully,but after "__cxz_throw" is
called,"__cxa_end_catch"
> is called,and the program crashed.
Works for me. What arch, what compiler version, etc.
Andrew.
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