Error List In C
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in the future... /usr/include/asm-generic/errno-base.h #ifndef _ASM_GENERIC_ERRNO_BASE_H #define _ASM_GENERIC_ERRNO_BASE_H #define EPERM 1 /* Operation not permitted */ #define ENOENT 2 /* No such file or directory */ #define ESRCH 3 /* No c error codes such process */ #define EINTR 4 /* Interrupted system call */ #define EIO 5 /*
C Error Codes In Linux
I/O error */ #define ENXIO 6 /* No such device or address */ #define E2BIG 7 /* Argument list too long */
Corsa C Error Codes
#define ENOEXEC 8 /* Exec format error */ #define EBADF 9 /* Bad file number */ #define ECHILD 10 /* No child processes */ #define EAGAIN 11 /* Try again */ #define ENOMEM 12 /* Out
Vectra C Error Codes
of memory */ #define EACCES 13 /* Permission denied */ #define EFAULT 14 /* Bad address */ #define ENOTBLK 15 /* Block device required */ #define EBUSY 16 /* Device or resource busy */ #define EEXIST 17 /* File exists */ #define EXDEV 18 /* Cross-device link */ #define ENODEV 19 /* No such device */ #define ENOTDIR 20 /* Not a directory */ #define EISDIR 21 /* Is a directory */ c programming error codes #define EINVAL 22 /* Invalid argument */ #define ENFILE 23 /* File table overflow */ #define EMFILE 24 /* Too many open files */ #define ENOTTY 25 /* Not a typewriter */ #define ETXTBSY 26 /* Text file busy */ #define EFBIG 27 /* File too large */ #define ENOSPC 28 /* No space left on device */ #define ESPIPE 29 /* Illegal seek */ #define EROFS 30 /* Read-only file system */ #define EMLINK 31 /* Too many links */ #define EPIPE 32 /* Broken pipe */ #define EDOM 33 /* Math argument out of domain of func */ #define ERANGE 34 /* Math result not representable */ #endif /usr/include/asm-generic/errno.h #ifndef _ASM_GENERIC_ERRNO_H #define _ASM_GENERIC_ERRNO_H #include
In C programming language, there is no direct support for error handling. You have to detect the failure and handle the error. In C programming language, return values represents success or failure. Inside a C program, when c errno example a function fails, you should handle the errors accordingly, or at least record the errors in errno.h in c a log file. When you are running some program on Linux environment, you might notice that it gives some error number. For example, errno c++ "Error no is : 17", which doesn't really say much. You really need to know what error number 17 means. This article shows all available error numbers along with it descriptions. This article might be a handy reference http://www.virtsync.com/c-error-codes-include-errno for you, when you encounter an error number and you would like to know what it means. In C programming language, there is an external variable called "errno". From this errno variable you can use some error handling functions to find out the error description and handle it appropriately. You have to include errno.h header file to use external variable errno. perror function prints error description in standard error. The strerror function returns a string describing http://www.thegeekstuff.com/2010/10/linux-error-codes the error code passed in the argument errnum. The following C code snippet tries to open a file through open system call. There are two flags in the open call. O_CREAT flag is to create a file, if the file does not exist. O_EXCL flag is used with O_CREAT, if the file is already exist open call will fail with the proper error number. $ cat fileopen.c #include
statement 2.2 Using = instead of == 2.3 scanf() errors 2.3.1 Forgetting to put an ampersand (&) on arguments 2.3.2 Using the wrong format http://www.drpaulcarter.com/cs/common-c-errors.php for operand 2.4 Size of arrays 2.5 Integer division 2.6 Loop errors http://docs.embarcadero.com/products/rad_studio/radstudio2007/RS2007_helpupdates/HUpdate4/EN/html/devwin32/cppcompmessagespart_xml.html 2.7 Not using prototypes 2.8 Not initializing pointers 3. String Errors 3.1 Confusing character and string constants 3.2 Comparing strings with == 3.3 Not null terminating strings 3.4 Not leaving room for the null terminator 4. Input/Output Errors 4.1 Using fgetc(), etc. incorrectly 4.2 Using feof() incorrectly 4.3 error codes Leaving characters in the input buffer 4.4 Using the gets() function 5. Acknowlegements 1. Introduction This document lists the common C programming errors that the author sees time and time again. Solutions to the errors are also presented. Another great resource is the C FAQ. Gimpel Software also has a list of hard to detect C/C++ bugs that might be useful. c error codes There is also a French translation of this page (thanks to Amine Brikci-Nigassa!). 2. Beginner Errors These are errors that beginning C students often make. However, the professionals still sometimes make them too! 2.1 Forgetting to put a break in a switch statement Remember that C does not break out of a switch statement if a case is encountered. For example: int x = 2; switch(x) { case 2: printf("Two\n"); case 3: printf("Three\n"); } prints out: Two Three Put a break to break out of the switch: int x = 2; switch(x) { case 2: printf("Two\n"); break; case 3: printf("Three\n"); break; /* not necessary, but good if additional cases are added later */ } 2.2 Using = instead of == C's = operator is used exclusively for assignment and returns the value assigned. The == operator is used exclusively for comparison and returns an integer value (0 for false, not 0 for true). Because of these return values, the C compiler often does not flag an error when = is used when one really wanted an ==. For example
the currently compiled class doesn't have the same MOM (Microsoft Object Model) related flags set as its direct parent. This compiler error message is deprecated. E2525: You must define _PCH_STATIC_CONST before including xstring to use this feature You attempted to use a feature defined in xstring, part of the Dinkumware standard C++ library. The C++ compiler could not generate a precompiled header because there is a constant (defined in xstring) in the header. If you want to include xstring, you should first set the define _PCH_STATIC_CONST. E2526: Property 'name' uses another property as getter/setter; Not allowed Properties typically have both a getter and a setter, but a property cannot serve as either the getter or setter of another property. E2008: Published property access functions must use __fastcall calling convention The calling convention for access functions of a property (read, write, and stored) declared in a __published section must be __fastcall. This also applies to hoisted properties. E2122: Function call terminated by unhandled exception 'value' at address 'addr' This message is emitted when an expression you are evaluating while debugging includes a function call that terminates with an unhandled exception. For example, if in the debugger's evaluate dialog, you request an evaluation of the expression foo()+1 and the execution of the function foo() causes a GP fault, this evaluation produces the above error message.You may also see this message in the watches window because it also displays the results of evaluating an expression. E2506: Explicit specialization of 'specifier' is ambiguous: must specify template arguments In the following code, explicit template arguments are necessary: E2483: Array dimension 'specifier' could not be determined If, during instantiation of a type, an array dimension cannot be computed—usually this is due to some other error which would be reported—then this error will result. For example, if an array dimension is dependent upon a template parameter but an error occurs while it is being parsed and the template argument being substituted does not yield a legal constant expression, this error is displayed. E2509: Value out of range The inline assembler has detected a numeric overflow in one of your expressions. M