memory leak, valgrind...help plz!

[talefsa]

Hi,

I'm trying to figure out the origin of a memory corruption in my code using valgrind.
valgrind gave me a number of messages that didn't help much, the first invalid read/write message is as follow:

==22774== Invalid write of size 4
==22774== at 0x488F53A: std::string::_Alloc_hider::_Alloc_hider(char*, std::allocator<char> const&) (in /usr/lib/libstdc++.so.5.0.3)
==22774== by 0x488FC26: std::string::string(char const*, std::allocator<char> const&) (in /usr/lib/libstdc++.so.5.0.3)
==22774== by 0x8181D12: Basic::Basic(sc_module_name, SocIf*, char const*, ParameterSet&) (basic_top.cpp:48)
==22774== by 0x8115700: sc_main (main.cpp:112)
==22774== by 0x8BBE423: main (in /.................../sc_exe-g++)
==22774== Address 0x53E7A84 is 0 bytes after a block of size 420 alloc'd
==22774== at 0x401A9D0: operator new(unsigned) (vg_replace_malloc.c:164)
==22774== by 0x8115691: sc_main (main.cpp:112)
==22774== by 0x8BBE423: main (in /.............../sc_exe-g++)
at basic_top.cpp:48 i have only a string initialisation!!!


My stupid questions are:
-what does "Address 0x53E7A84 is 0 bytes after a block of size 420 alloc'd" refers to?
-the above messsage is the first on the list, does this mean that the memory corruption comes definitelyfrom Basic constructor??

Cheers,
I.Kazzouzi

[yogesh_anand]

Can u plz paste ur source code here?

Hi,

I'm trying to figure out the origin of a memory corruption in my code using valgrind.
valgrind gave me a number of messages that didn't help much, the first invalid read/write message is as follow:

==22774== Invalid write of size 4
==22774== at 0x488F53A: std::string::_Alloc_hider::_Alloc_hider(char*, std::allocator<char> const&) (in /usr/lib/libstdc++.so.5.0.3)
==22774== by 0x488FC26: std::string::string(char const*, std::allocator<char> const&) (in /usr/lib/libstdc++.so.5.0.3)
==22774== by 0x8181D12: Basic::Basic(sc_module_name, SocIf*, char const*, ParameterSet&) (basic_top.cpp:48)
==22774== by 0x8115700: sc_main (main.cpp:112)
==22774== by 0x8BBE423: main (in /.................../sc_exe-g++)
==22774== Address 0x53E7A84 is 0 bytes after a block of size 420 alloc'd
==22774== at 0x401A9D0: operator new(unsigned) (vg_replace_malloc.c:164)
==22774== by 0x8115691: sc_main (main.cpp:112)
==22774== by 0x8BBE423: main (in /.............../sc_exe-g++)
at basic_top.cpp:48 i have only a string initialisation!!!


My stupid questions are:
-what does "Address 0x53E7A84 is 0 bytes after a block of size 420 alloc'd" refers to?
-the above messsage is the first on the list, does this mean that the memory corruption comes definitelyfrom Basic constructor??

Cheers,
I.Kazzouzi

[talefsa]

Hi,

I forgot to add in my previous message that I'm using systemC library.
concerning the source code i can't past it here...coz i'm not allowed!!!

thks,

[yogesh_anand]

i understand ur concern.Just change name of variables or if u want then make a similar sample program using different variable for pasting

Hi,

I forgot to add in my previous message that I'm using systemC library.
concerning the source code i can't past it here...coz i'm not allowed!!!

thks,