Re: [Valgrind-users] Initialize a char[] to use sprintf function

[aruperez <arm...@gm...>]

Christoph Bartoschek-2 wrote:
> 
> 
> Your example code looks ok. Show us the real code.
> 
> Christoph
> 
> 
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Well is very much the same but here it is

string packSerial(int denomNumber, int cluster, int lot, int sublot, int
serial){

			char ser[11];

			string container;

			string lotN = string();

			

			sprintf(ser,"%d",denomNumber);

			container = string(ser);

			lotN.append(container.c_str());

			sprintf(ser,"%d",cluster);

			container = string(ser);

			while(container.length()<3){

				container = string('0'+container);

			}

			lotN.append(container.c_str());

			sprintf(ser,"%d",lot);

			container = string(ser);

			while(container.length()<5){

				container = string('0'+container);

			}

for every one of the sprintf calls valgrind says 

Conditional jump or move depends on uninitialised value(s)
==28593==    at 0x43820E5: vfprintf (in /lib/libc-2.6.1.so)
==28593==    by 0x439E91B: vsprintf (in /lib/libc-2.6.1.so)
==28593==    by 0x438A42D: sprintf (in /lib/libc-2.6.1.so)
==28593==    by 0x806D42E: card_manager::packSerial(int, int, int, int, int)
(card_manager.cpp:431)
==28593==    by 0x807396B: card_manager::gen_keys(int, int, int, int,
std::string) (card_manager.cpp:280)
==28593==    by 0x8076BE2: command_interpreter::interpret(iso8583_frame
const&) (command_interpreter.cpp:126)
==28593==    by 0x8078642: request_handler::con_handling(request)
(request_handler.cpp:55)
==28593==    by 0x80787AE: request_handler::handle(request)
(request_handler.cpp:25)
==28593==    by 0x807888F: queue_process::consume(void*)
(queue_process.cpp:69)
==28593==    by 0x805CBAF: Consume(void*) (queue_process.cpp:78)
==28593==    by 0x41CA191: start_thread (in /lib/libpthread-2.6.1.so)
==28593==    by 0x440802D: clone (in /lib/libc-2.6.1.so)


thanks for any help



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