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gcc bus error Vilas, North Carolina

asked 4 months ago viewed 378 times active 4 months ago Related 0gcc compiling error for c++ program0Error while compiling c program using gcc thru the CLI1diff between x86_64-linux-gnu-gcc and executes, it's accessing an array location that does not exist. What do I do when two squares are equally valid? configure:2401: $? = 1 configure:2567: checking for suffix of object files configure:2588: /backup/gcc-4.3.0-compiled/./gcc/xgcc -B/backup/gcc-4.3.0-compiled/./gcc/ -B/usr/sparc-linux/bin/ -B/usr/sparc-linux/lib/ -isystem /usr/sparc-linux/include -isystem /usr/sparc-linux/sys-include -c -g -fkeep-inline-functions conftest.c >&5 xgcc: Internal error: Bus error (program

Does chilli get milder with cooking? more hot questions question feed lang-py about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation What sense of "hack" is involved in "five hacks for using coffee filters"? In modern use on most architectures these are much rarer than segmentation faults, which occur primarily due to memory access violations: problems in the logical address or permissions.

For instance: unsigned char data[6]; (unsigned int *) (data + 2) = 0xdeadf00d; This snippet tries to write the 32-bit integer value 0xdeadf00d to an address that is (most likely) not line in no longer valid when readFile() returns, so you'll have an array of of useless pointers. 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 This book is dated, but it remains very useful, and no C text that I've seen is more succinct.

Unaligned access[edit] Most CPUs are byte-addressable, where each unique memory address refers to an 8-bit byte. Flow Chart with tikzpicture: particular tipes of arrows How to use the binomial theorem to calculate binomials with a negative exponent What actually are virtual particles? And shm_open says that it generates objects of size 0: The shared memory object has a size of zero. A bus error is trying to access memory that can't possibly be there.

Will I still get the error now? The goal in my game is to take a huge 5049 x 1 text file of words. It gives you a window into your running program. The default gcc for 14.04 is 4.8.4; your title mentions gcc-5 but the error messages from the configure script say gcc version 6.1.1 20160511 (Ubuntu 6.1.1-3ubuntu11~14.04.1).

My code is an attempt to teach myself C. What kind of distribution is this? You should think about allocating the array dynamically as you read the file or have a mechanism to ensure you read the right amount of data (not too little and not This worked well in one thread, but when using openMP this drives to bus error, because Mac OS X has very limited stack size for non-main threads.

With gcc you could even make this really clear by using the aligned attribute to create a special type:typedef char aligned_data __attribute__ ((aligned (8)));struct header { short id; aligned_data data[0];};I think Weirder yet is that it complies. I think that since most[?] modern compilers for most processors pad / align the data for the programmers, the alignment troubles of yore (at least) mitigated, and hence one does not share|improve this answer answered Oct 17 '08 at 14:57 Mark Baker 3,63211823 1 My i7 certainly has an MMU, but I still came across this error while learning C on

Description martin 2012-05-24 05:49:17 UTC Hello, compiling gcc 4.3.0 and 4.7.0 fails by making libgcc on a sparc (Infrant Technologics, Inc. - neon version: 0) with "xgcc: Internal error: Bus error sptr = (short *)(((char *)sptr) + 1); *sptr = 100; */ return 0; } Compiling and running the example on a POSIX compliant OS on x86 demonstrates the error: $ gcc cov(x,y)=0 but corr(x,y)=1 Is there any job that can't be automated? On ARM less than Arch V7, you will have your code have an alignment failure- and on V7, you can, IF your runtime is set for it, handle it with a

Are there any rules or guidelines about designing a flag? Not the answer you're looking for? Not the answer you're looking for? You are reversing the string in place.

of the atom whose 1s electron moves nearly at the speed of light? Join them; it only takes a minute: Sign up Why is this C code giving me a bus error? There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. BUS errors are caused by an attempt to access "memory" that the machine simply cannot access because the address is invalid. (Hence the term "BUS" error.) This can be due to

Word with the largest number of different phonetic vowel sounds What's behind the word "size issues"? 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 What's behind the word "size issues"? 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

Similarly, if multi-byte accesses must be 32-bit aligned, addresses 0, 4, 8, 12, and so on would be considered aligned and therefore accessible, and all addresses in between would be considered References[edit] ^ z/Architecture Principles of Operation, SA22-7832-04, Page 6-6, Fifth Edition (September, 2005) IBM Corporation, Poukeepsie, NY, Retrievable from http://publibfp.dhe.ibm.com/epubs/pdf/a2278324.pdf (Retrieved December 31, 2015) ^ https://groups.google.com/group/comp.unix.internals/browse_thread/thread/6369e8f923aedcb0/54f8ed15e326dc0[unreliable source?] v t e Operating So my question is simple, why is this C code giving me this bus error msg? #include #include //Preprocessed Functions void jumblegame(); void readFile(char* [], int); int main(int argc, char* argv[]) using a null pointer.

It's read-only, you don't have permission, etc... This is free software; see the source for copying conditions. What would have been the behavior on a non-buggy OS? –Calvin Huang Feb 17 '14 at 0:55 add a comment| up vote 3 down vote One classic instance of a bus From the code you can clearly see that the o0 register contains the value 0x2a (which is, of course, 42) and hence we are looking at code corresponding to the line

Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. Browse other questions tagged 14.04 python compiling gcc or ask your own question. This is free software; see the source for copying conditions. There are many other ways a debugger is useful, but this is high on the list.