Breakpoints not working in Solaris

[Dhammika Pathirana]

I'm having a problem with the breakpoints in gdb 5.3. I'm woking on 
Solaris (SunOs 5.9) and I'm using gcc 3.2.3 configured with following 
options,

/usr/local/lib/gcc-lib/sparc-sun-solaris2.9/3.2.3/specs
Configured with: ../configure --disable-nls --with-ld=/usr/ccs/bin/ld 
--with-as=/usr/ccs/bin/as
Thread model: posix
gcc version 3.2.3

when I try to debug a MT program the breakpoints don't seem to work.

(gdb) br main
Breakpoint 1 at 0x53fde4: file /home/dnwp/drop2/src/Test/Main.C, line 120.11

(gdb) info br
Num Type           Disp Enb Address    What
1   breakpoint     keep y   0x542fa00053fde4 in main
at /home/dnwp/drop2/src/Test/Main.C:120

when I execute the program, I get the following error.

Cannot insert breakpoint 1.
Error accessing memory address 0x53fde4: I/O error.
The same program may be running in another process.

But no other process is executing this particular binary.

I'm also having a problem with backtracing coredumps (pls refer earlier 
posting). Any idea what's wrong here?

thanks

Dhammika
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