Common Coding Bugs
From enfascination
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*if it is for a specific static field, it could mean that I forgot "ClassName::" on initializing it | *if it is for a specific static field, it could mean that I forgot "ClassName::" on initializing it | ||
*if a function is declared from another file but that file isn't included | *if a function is declared from another file but that file isn't included | ||
| + | *or forgot to comile the cpp file in make | ||
/usr/libexec/gcc/path/ld: multiple definitions of symbol | /usr/libexec/gcc/path/ld: multiple definitions of symbol | ||
| − | |||
*If there are too many copies of a file name in the makefile. | *If there are too many copies of a file name in the makefile. | ||
| + | *Or some other Makefile problem | ||
020walker.cpp:311: error: a function-definition is not allowed here before '{' token | 020walker.cpp:311: error: a function-definition is not allowed here before '{' token | ||
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error: expected unqualified-id before 'using' | error: expected unqualified-id before 'using' | ||
*forgot closing bracket on class definition | *forgot closing bracket on class definition | ||
| + | |||
| + | error: expected unqualified-id at end of input | ||
| + | *forgot semi colon at the end of class definition | ||
error: expected constructor, destructor, or type conversion before '&' token | error: expected constructor, destructor, or type conversion before '&' token | ||
*forgot to include header file on .cpp file | *forgot to include header file on .cpp file | ||
| + | error: invalid use of member (did you forget the '&' ?) | ||
| + | *forgot parens on a function | ||
| + | |||
| + | error: 'string' does not name a type | ||
| + | *forgot "using namespace std;" | ||
| + | |||
| + | unknown:FATAL:can't create output file | ||
| + | *maybe permissions are off or a directory doesn't exist or something like that. | ||
Lots more: | Lots more: | ||
[[http://www.comp.leeds.ac.uk/hannah/cpp/errors.html]] | [[http://www.comp.leeds.ac.uk/hannah/cpp/errors.html]] | ||
Latest revision as of 01:44, 14 July 2009
Note: these diagnoses will tend towards being too narrow, and may have solutions that are more general
C++
/usr/libexec/gcc/PATH/4.0.1/ld: Undefined symbols: Something collect2: ld returned 1 exit status make: *** [program] Error 1
- if it is for a whole class, it could mean that in an abstract class, I didn't set a function declaration to 0
- if it is for a specific static field, it could mean that I forgot "ClassName::" on initializing it
- if a function is declared from another file but that file isn't included
- or forgot to comile the cpp file in make
/usr/libexec/gcc/path/ld: multiple definitions of symbol
- If there are too many copies of a file name in the makefile.
- Or some other Makefile problem
020walker.cpp:311: error: a function-definition is not allowed here before '{' token
020walker.cpp:332: error: expected `}' at end of input
- Missing closing curly bracket on an if-statement
error: expected unqualified-id before 'using'
- forgot closing bracket on class definition
error: expected unqualified-id at end of input
- forgot semi colon at the end of class definition
error: expected constructor, destructor, or type conversion before '&' token
- forgot to include header file on .cpp file
error: invalid use of member (did you forget the '&' ?)
- forgot parens on a function
error: 'string' does not name a type
- forgot "using namespace std;"
unknown:FATAL:can't create output file
- maybe permissions are off or a directory doesn't exist or something like that.
Lots more: [[1]]