Bus Error 10 In C
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Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. bus error 10 gulp Join them; it only takes a minute: Sign up What is a bus error? up vote 155 down vote favorite 49 What does the "bus error" message mean, and how does it differ from a segfault? c unix segmentation-fault bus-error share|improve this question edited Oct 18 '15 at 10:44 Cool Guy 15.8k51952 asked Oct 17 '08 at 14:48 bus error 10 strtok raldi 7,239216178 add a comment| 15 Answers 15 active oldest votes up vote 150 down vote accepted Bus errors are rare nowadays on x86 and occur when your processor cannot even attempt the memory access requested, typically: using a processor instruction with an address that does not satisfy its alignment requirements. Segmentation faults occur when accessing memory which does not belong to your process, they are very common and are typically the result of: using a pointer to something that was deallocated. using an uninitialized hence bogus pointer. using a null pointer. overflowing a buffer. PS: To be more precise this is not manipulating the pointer itself that will cause issues, it's accessing the memory it points to (dereferencing). share|improve this answer edited Oct 17 '08 at 15:18 answered Oct 17 '08 at 15:12 bltxd 5,70322336 52 They aren't rare; I'm just at Exercise 9 from How to Learn C the Hard Way and already encountered one... –11684 Mar 26 '13 at 20:12 5 Another cause of bus errors (on Linux any
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only takes a minute: Sign up Bus Error: 10 in C up vote 0 down vote favorite My code compiles just fine but when I run it I get bus error: 10 void backupf(char *namelist, char *dirname) { char *in_filename; http://stackoverflow.com/questions/212466/what-is-a-bus-error char *out_filename; char line[MAXPATHLEN]; FILE *filenames = fopen(namelist, "r"); if(filenames == NULL) { fprintf(stderr, "Cannot Open File\n"); exit(EXIT_FAILURE); } while( fgets(line, sizeof line, filenames) != NULL ) { sprintf(in_filename, "./%s\n", line); sprintf(out_filename, "%s/%s\n", dirname, line); } backup(dirname, in_filename, out_filename); fclose(filenames); } It's supposed to take a text file argument with a list of file names and then use that information to back it up to a backup directory using a backup function I've written. c backup bus-error share|improve this question http://stackoverflow.com/questions/19738440/bus-error-10-in-c edited Nov 2 '13 at 2:54 Jonathan Leffler 438k61508821 asked Nov 2 '13 at 2:46 SecretlyHuman 33 Welcome to Stack Overflow. Please read the About page soon. Does the crash occur in backup() because you don't properly check that the files it uses are opened successfully? You should state what happens, and you should be able to use a debugger enough to get a stack trace so you can tell which function it crashed in (even if you can't do anything else with it). You really don't want to add newlines to the file names; you probably need to remove the newlines that fgets() leaves on the data it reads. And learning how to use print statements to find out what is going on is also important. –Jonathan Leffler Nov 2 '13 at 2:50 i know it crashes in the fgets() function, the backup function is fine –SecretlyHuman Nov 2 '13 at 2:53 Odd...that tends to mean you have a buffer overflow in one of the functions this code calls. Also odd is the fact that you don't call backup in the loop; you only try saving the last name that is read from the file. It isn't clear why your backup() function needs the dirname argument. –Jonathan Leffler Nov 2 '13 at 2:55 i tried calling backup in the loop and got the same thing, so i thought i
challenged and removed. (July 2015) (Learn how and when to remove this template message) In computing, a bus error is a fault https://en.wikipedia.org/wiki/Bus_error raised by hardware, notifying an operating system (OS) that a process is trying to access memory that the CPU cannot physically address: an invalid address for the address https://forum.openframeworks.cc/t/bus-error-10-segmentation-fault-conversion-from-string-literal-to-char/13282 bus, hence the name. In modern use on most architectures these are much rarer than segmentation faults, which occur primarily due to memory access violations: problems in bus error the logical address or permissions. On POSIX-compliant platforms, bus errors usually result in the SIGBUS signal being sent to the process that caused the error. SIGBUS can also be caused by any general device fault that the computer detects, though a bus error rarely means that the computer hardware is physically broken—it is normally bus error 10 caused by a bug in a program's source code.[citation needed] Bus errors may also be raised for certain other paging errors; see below. Contents 1 Causes 1.1 Non-existent address 1.2 Unaligned access 1.3 Paging errors 2 Example 3 References Causes[edit] There are at least three main causes of bus errors: Non-existent address[edit] Software instructs the CPU to read or write a specific physical memory address. Accordingly, the CPU sets this physical address on its address bus and requests all other hardware connected to the CPU to respond with the results, if they answer for this specific address. If no other hardware responds, the CPU raises an exception, stating that the requested physical address is unrecognized by the whole computer system. Note that this only covers physical memory addresses. Trying to access an undefined virtual memory address is generally considered to be a segmentation fault rather than a bus error, though if the MMU is separate, the processor can't tell the difference.
it works its great but it often crashes on launch. The most common error is Bus error: 10 but I have also had Segmentation fault: 11 and debug always says "Couldn't set thread priority." I think it might be something to do with the Conversion from string literal to 'char *' being deprecated. I think there are probably a few examples of this in my code and that could be causing problems. For example is this wrong. It works but maybe its causing memory issues. void testApp::drawNumbers(){char dataStr[20]; // an array of charssprintf(dataStr, "%d %d %d %d %d %d %d %d", tape[7], tape[6], tape[5], tape[4], tape[3], tape[2], tape[1], tape[0]);franklinBook.drawString(dataStr, 105,335);} All my code seemed much more stable on OSX 10.5.8 and now I seem to have more problems. Are there some core changes I should be aware of. The AddOns I am using areofxOscofxXmlSettingsofxBeatTracking Any tips would really be appreciated. Many thanks Simon trentbrooks 2013-09-20 06:26:26 UTC #2 Hey Simon, I would guess it's the buffer size of 20. You are storing 8 ints and 7 spacer chars, if each int is 2 digits long that's 16 + 7 chars total. You could make the buffer bigger, or just use a stringstream instead... stringstream dataStr;dataStr << tape[7] << " " << tape[6] << " " << endl;franklinBook.drawString(dataStr.str(), 105,335); simonblackmore 2013-09-20 21:00:11 UTC #3 Thanks, Trent I am sure this helps. I seem to have a heap of other troubles.I hate upgrading Cheers Simon Home Categories FAQ/Guidelines Terms of Service Privacy Policy Powered by Discourse, best viewed with JavaScript enabled