Ansi C Bus Error
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or c bus error 10 posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss c bus error core dumped Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes bus error 10 mac a minute: Sign up What is a bus error? up vote 154 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
Bus Error Linux
18 '15 at 10:44 Cool Guy 15.8k51952 asked Oct 17 '08 at 14:48 raldi 7,226216178 add a comment| 15 Answers 15 active oldest votes up vote 149 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 linux bus error core dumped 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 5,68322336 51 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 anyway) is when the operating system can't back a virtual page with physical memory (e.g. 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 (so called soft page faults.) Make a large enough malloc, and then write to enough of it and you'll get a bus error. –Eloff Jul 14 '15 at 0:09 add a comment| up vote 55 down vote A segfault is accessing memory that you're not allowed to access. It's read-only, you don't have permission, etc... A bus error is trying to access memory that can't possibly be there. You've used an address that's meaningless to the system, or the wrong kind of address for that operation. share|improve this answer answered Oct 17
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more how to debug bus error about Stack Overflow the company Business Learn more about hiring developers or posting ads
How To Solve Bus Error In Linux
with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack
Bus Error Vs Segmentation Fault
Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Bus error: 10 error up vote 23 down vote favorite 10 Here http://stackoverflow.com/questions/212466/what-is-a-bus-error is my code #import of these signals are indications that your program is seriously broken in some way, and there’s usually no way to continue the computation which encountered the error. Some programs handle program error signals in order http://www.gnu.org/s/libc/manual/html_node/Program-Error-Signals.html to tidy up before terminating; for example, programs that turn off echoing of terminal http://askubuntu.com/questions/783145/gcc-5-internal-compiler-error-bus-error-program-as input should handle program error signals in order to turn echoing back on. The handler should end by specifying the default action for the signal that happened and then reraising it; this will cause the program to terminate with that signal, as if it had not had a handler. (See Termination in Handler.) Termination is bus error the sensible ultimate outcome from a program error in most programs. However, programming systems such as Lisp that can load compiled user programs might need to keep executing even if a user program incurs an error. These programs have handlers which use longjmp to return control to the command level. The default action for all of these signals is to cause the process to terminate. If you block or ignore c bus error these signals or establish handlers for them that return normally, your program will probably break horribly when such signals happen, unless they are generated by raise or kill instead of a real error. When one of these program error signals terminates a process, it also writes a core dump file which records the state of the process at the time of termination. The core dump file is named core and is written in whichever directory is current in the process at the time. (On GNU/Hurd systems, you can specify the file name for core dumps with the environment variable COREFILE.) The purpose of core dump files is so that you can examine them with a debugger to investigate what caused the error. Macro: int SIGFPE The SIGFPE signal reports a fatal arithmetic error. Although the name is derived from “floating-point exception”, this signal actually covers all arithmetic errors, including division by zero and overflow. If a program stores integer data in a location which is then used in a floating-point operation, this often causes an “invalid operation” exception, because the processor cannot recognize the data as a floating-point number. Actual floating-point exceptions are a complicated subject because there are many types of exceptions with subtly dif communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Ask Ubuntu Questions Tags Users Badges Unanswered Ask Question _ Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top gcc-5: internal compiler error: Bus error (program as) up vote 0 down vote favorite I'm trying to install Python 2.7.11 on my Ubuntu 14.04 LTS vServer (hosted at strato), because it's a requirement for letsencrypt. I'm using this tutorial, basically just replacing 2.7.9 with 2.7.11. Now when I'm trying to run ./configure I get the error C Compiler cannot create executables I have no idea what is causing this My config.log file: This file contains any messages produced by compilers while running configure, to aid debugging if configure makes a mistake. It was created by python configure 2.7, which was generated by GNU Autoconf 2.69. Invocation command line was $ ./configure ## --------- ## ## Platform. ## ## --------- ## hostname = h2577734.stratoserver.net uname -m = x86_64 uname -r = 3.13.0-042stab111.12 uname -s = Linux uname -v = #1 SMP Thu Sep 17 11:38:20 MSK 2015 /usr/bin/uname -p = unknown /bin/uname -X = unknown /bin/arch = unknown /usr/bin/arch -k = unknown /usr/convex/getsysinfo = unknown /usr/bin/hostinfo = unknown /bin/machine = unknown /usr/bin/oslevel = unknown /bin/universe = unknown PATH: /usr/local/sbin PATH: /usr/local/bin PATH: /usr/sbin PATH: /usr/bin PATH: /sbin PATH: /bin PATH: /usr/games PATH: /usr/local/games ## ----------- ## ## Core tests. ## ## ----------- ## configure:2816: checking build system type configure:2830: result: x86_64-unknown-linux-gnu configure:2850: checking host system type configure:2863: result: x86_64-unknown-linux-gnu configure:2974: checking for --enable-universalsdk configure:3015: result: no configure:3025: checking for --with-universal-archs configure:3042: result: 32