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Bus Error Linux C


Join them; it only takes a minute: Sign up What is a bus error? more hot questions question feed lang-c about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation My problem comes when I run it with ./blah command. This antipattern is likely responsible for your program looping more than you might expect when reading the file. http://drupalmostpopular.com/bus-error/bus-error-c-linux.html

share|improve this answer edited Jul 30 '12 at 19:40 answered Jul 30 '12 at 18:35 pb2q 37.4k1187113 array[] doesn't exist anyway :( –Martin James Jul 30 '12 at 18:37 How to typedef the return type of a member function from a template class? permalinkembedsaveparentaboutblogaboutsource codeadvertisejobshelpsite rulesFAQwikireddiquettetransparencycontact usapps & toolsReddit for iPhoneReddit for Androidmobile websitebuttons<3reddit goldredditgiftsUse of this site constitutes acceptance of our User Agreement and Privacy Policy (updated). © 2016 reddit inc. Converting a virtual address to a physical address can be a somewhat expensive operation.

Bus Error C++

The disk backup will also occur more quickly since it doesn't have to go over the network to your directory. low-memory conditions or out of huge pages when using huge page memory.) Typically mmap (and malloc) just reserve the virtual address space, and the kernel assigns the physical memory on demand It's bad practices, to be blunt. :D –Svartalf Apr 23 '15 at 18:15 | show 2 more comments up vote 2 down vote It depends on your OS, CPU, Compiler, and Thanks, forgot about malloc been a while since i last used c.

  • To set up a core link in a directory: ln -s /tmp/core.project ./core unlimit coredumpsize /tmp/core.project in the first line is the name that the core file is really called; the
  • for (j = 0; i < n; j++) { for (i =0; i < m; i++) { a[n+1][j] += a[i][j]; } } Notice the 'inadvertent' usage of variable 'i' in the
  • Paging errors[edit] FreeBSD, Linux and Solaris can signal a bus error when virtual memory pages cannot be paged in, e.g.
  • A better way to read a file is with fread() (see http://www.cplusplus.com/reference/clibrary/cstdio/fread/).
  • 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

Example[edit] This is an example of unaligned memory access, written in the C programming language with AT&T assembly syntax. #include int main(int argc, char **argv) { int *iptr; char *cptr; The program can catch these signals, and even ignore them. X86 machines and code have got people doing rather silly things for a while now, this being one of them. Bus Error Vs Segmentation Fault Unaligned access[edit] Most CPUs are byte-addressable, where each unique memory address refers to an 8-bit byte.

Still tonyt may have a system that works differently than mine. How To Debug Bus Error User #112602 118 posts ponder Forum Regular reference: whrl.pl/ROZ8v posted 2006-Mar-31, 3:18 pm AEST ref: whrl.pl/ROZ8v posted 2006-Mar-31, 3:18 pm AEST O.P. The kernel does not reschedule the process until it's flagged SIGSEGV on it, and the first thing it does when rescheduled is run the signal handler, which does the core dump. You just simply don't want to DO this.

This will only copy references, it won't make a new copy of the string. Sigbus Error Linux What does the letter 'u' mean in /dev/urandom? 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 raldi 7,337216178 add a comment| 15 Answers 15 active Reason: Remove html which is no longer supported Remove advertisements Sponsored Links Perderabo View Public Profile Find all posts by Perderabo #3 11-10-2001 tonyt Registered User

How To Debug Bus Error

From: Here share|improve this answer answered Oct 17 '08 at 14:54 Oli 93.1k45160228 Depends on the nasty tricks you're doing with your code. Who created the Secret Stairs as a way into Mordor and for what purpose? Bus Error C++ It's a modification of a game I made when I learned Java. How To Solve Bus Error In Linux This answered my question.

Does that mean that OS X Mavericks is buggy? this content I know how to do all of that. share|improve this answer answered May 8 '09 at 16:04 bk1e 18.1k43760 add a comment| up vote 5 down vote For instance, a bus error might be caused when your program tries User #112602 118 posts ponder Forum Regular reference: whrl.pl/ROZ0y posted 2006-Mar-31, 2:24 pm AEST ref: whrl.pl/ROZ0y posted 2006-Mar-31, 2:24 pm AEST O.P. Bus Error (core Dumped) Linux

from my understanding of fgets c will be pointing to the line of text in the file out.txt that i want to read in.In the extended version of the code i I didn't do anything else. operator do?1Bus error in simple C program1C++ pointers declaration order output segmentation fault or bus error3What error code does a process that segfaults return?0Bus Error in C for Loop0Bus Error, don't http://drupalmostpopular.com/bus-error/bus-error-linux.html 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.

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 caused by Bus Error (core Dumped) C An attempt to access memory that isn't physically present would also give a bus error, but you won't see this if you're using a processor with an MMU and an OS Look carefully at the code above.

Make loop more efficient Goodness Giza Golf!

Is it a stochastic matrix? Which current networking protocol would be the optimal choice for very small FTL bandwidth? Related 157What is a bus error?1170With C arrays, why is it the case that a[5] == 5[a]?6Why does the following C program give a bus error?1Bus Error:10 with more indexes to Bus Error 10 Mac Weirder yet is that it complies.

Privacy policy About Wikipedia Disclaimers Contact Wikipedia Developers Cookie statement Mobile view UNIX & Linux Forums > Top Forums > UNIX for Dummies Questions & Answers It's read-only, you don't have permission, etc... share|improve this answer answered May 8 '09 at 7:06 paxdiablo 496k1209781434 11 Memory mapped files can also generate SIGBUS. –bk1e May 8 '09 at 16:06 on arm SIGBUS http://drupalmostpopular.com/bus-error/bus-error-arm-linux.html SIGBUS means that you have asked to cpu to do something that is impossible.

up vote 157 down vote favorite 50 What does the "bus error" message mean, and how does it differ from a segfault? Will it cause mis-alignment errors on a fragile architecture. Attempts to branch to an odd address results in a specification exception.[1] Data, however, may be retrieved from any address in memory, and may be one byte or longer depending on short *sptr; int i; sptr = (short *)&i; // For all odd value increments, it will result in sigbus.

It ran nearly to normal completion time, then simply poo-pood. The goal in my game is to take a huge 5049 x 1 text file of words. share|improve this answer answered May 8 '09 at 15:25 ephemient 119k26180304 2 +1 for the Einstein quote and to balance an unjustified -1. –tokland Jan 16 '11 at 15:22 add This should be enough to help you figure out the error yourself, which in the long run is much better than asking others.