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Bus Error C Programming

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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 A bus error is trying to access memory that can't possibly be there. Can your program do anything correctly other than write to that file (can it read the input)? The time now is 03:52 AM.

You set up an uint8_t array, add one, two, or three to the array's pointer and then typecast to a short, int, or long and try to access the offending result.) How to have table blanks as zeros? Look very closely in your program for bizarre things like that. This is the area of the disk that the machine uses for virtual memory.

Bus Error C++

What would cause a bus error? The program compiles perfectly. array[index]) and pointer access (eg *(array + index)) often have the same meaning.

So each element of the array will point to the same buffer: line, which will go out of scope and become invalid when your function exits. Another possible cause is an alignment error. One possibility is a segmentation fault (accessing memory you don't own) which somehow got past the inter-process protection and triggered an error at the bus level. How To Solve Bus Error In Linux In various fields of research (perhaps wider), the slang "bus error" has a different meaning, which I think could be a relevant answer.

using an uninitialized hence bogus pointer. Bus Error Linux Word to describe object that can be physically passed through Goodness Giza Golf! line is deallocated when readFile returns, making those pointers all invalid. –Keith Randall Jul 30 '12 at 18:38 Thanks. kid in winter Is there one word that describes the attribute of being either disposable or reusable?

More to the point, the cpu can catch this error immediately by looking at the virtual address. Bus Error Vs Segmentation Fault So, I created an string array in C, tried to read this string array and put it into C. A number of your loops are (depending on what values of satir and sutun are input by the user) will access array elements out of bounds. At age 25, is it still okay to wear braces to work?

  • tonyt View Public Profile Find all posts by tonyt #4 11-10-2001 TioTony Bit Pusher Join Date: Oct 2001 Last Activity: 7 November 2016, 7:27 PM EST Location:
  • share|improve this answer answered Jul 30 '12 at 18:38 AlexDev 1,675821 add a comment| up vote 0 down vote char* array[5049], int x array[x] = fgets(line,256,file) You assign to array[x], which
  • share|improve this answer edited Oct 7 at 14:58 answered Aug 7 '15 at 12:00 Ciro Santilli 烏坎事件2016六四事件 法轮功 55.8k10239183 add a comment| up vote 1 down vote A specific example of
  • Does that mean that OS X Mavericks is buggy?
  • Forum Today's Posts C and C++ FAQ Forum Actions Mark Forums Read Quick Links View Forum Leaders What's New?
  • If an int is 4 bytes on your system and you try to store an int at random addresses in a read-only segment, then yes 75% of the time you will
  • Great!
  • s there anyone who can help me ?
  • Still tonyt may have a system that works differently than mine.
  • The bus is the connection between the CPU and the memory.

Bus Error Linux

Alternately, if you can use strdup, it will take care of allocating the space for you. Would you mind verifying these hypotheses? 12-10-2006 #5 RandomX View Profile View Forum Posts Registered User Join Date Nov 2006 Posts 19 Yes, Im sorry. Bus Error C++ share|improve this answer edited Jul 30 '12 at 18:42 answered Jul 30 '12 at 18:37 Gene 30.4k32958 Thank you. Linux Bus Error (core Dumped) Which current networking protocol would be the optimal choice for very small FTL bandwidth?

Would you care to expand? 12-10-2006 #9 sl4nted View Profile View Forum Posts Registered User Join Date Nov 2006 Posts 176 Code: input = fopen("LMC.s","r"); output = fopen("LMC.o","w"); Code: if ((input share|improve this answer answered Oct 17 '08 at 14:55 Clinton Pierce 6,97394576 add a comment| up vote 8 down vote I believe the kernel raises SIGBUS when an application exhibits data Converting a virtual address to a physical address can be a somewhat expensive operation. share|improve this answer edited Dec 21 '14 at 2:23 answered Feb 6 '14 at 17:41 stuxnetting 435514 add a comment| up vote 0 down vote I just found out the hard How To Debug Bus Error

It generally just refers to any memory nowadays. Unlike bytes, larger units can span two aligned addresses and would thus require more than one fetch on the data bus. Texas, USA speed ticket as a European citizen, already left the country Word to describe object that can be physically passed through Update user password programmatically Could the Industrial Revolution be share|improve this answer answered Mar 16 '15 at 11:38 oromoiluig 646 add a comment| up vote 0 down vote My reason for bus error on Mac OS X was that I

I found a particular useful posts on bus errors in general, see here. Bus Error 10 Mac A better way to read a file is with fread() (see http://www.cplusplus.com/reference/clibrary/cstdio/fread/). Finding The nth Prime such that the prime - 1 is divisible by n Would this be considered as plagiarism?

It reported memory problem in readfile, which was a general clue to what specifically has been pointed out wrong above, which is my use of fget().

In this case, if you compile your program with gcc -g myprogram.c -o myprogram and then run it with gdb ./myprogram (I am assuming Linux), you will get a stack dump If cookies are made with enough sugar, will they just be chewy caramel? Post your code. Sigbus Error Linux My code is an attempt to teach myself C.

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UNIX & Linux Forums > Top Forums > up vote 157 down vote favorite 50 What does the "bus error" message mean, and how does it differ from a segfault? Posts 8,524 Rep Power 3316 1. You just simply don't want to DO this.

Forget I mentioned it. How does Professor McGonagall know about the Golden Trio's conversation? Look carefully at the code above. accessing a memory-mapped file or executing a binary image which has been truncated while the program was running),[2] or because a just-created memory-mapped file cannot be physically allocated, because the disk

Browse other questions tagged c arrays function bus-error or ask your own question. On the other side, you read 2 times 256 bytes, and you lose the first 256. Mountainering with 6 y.o. For example, if multi-byte accesses must be 16 bit-aligned, addresses (given in bytes) at 0, 2, 4, 6, and so on would be considered aligned and therefore accessible, while addresses 1,

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 For example, for hardware based on the IBM System/360 mainframe, including the IBM System z, Fujitsu B8000, RCA Spectra, and UNIVAC Series 90, instructions must be on a 16-bit boundary, that Why are static password requirements used so frequently? This should be enough to help you figure out the error yourself, which in the long run is much better than asking others.

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