error messages: what changed
Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.
Title: error messages
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| 1 | + | ## Errors during compilation | |
| 2 | + | ||
| 3 | + | Unless the error identifies itself as an internal compiler error, it is unlikely that the error is caused by a bug in the compiler or its runtime library. Syntax errors are almost always due to incorrect code. Refer to the FPC [Parser Messages](https://www.freepascal.org/docs-html/user/userse62.html) documentation for a listing of the various Error and Warning messages produced by the FPC Parser along with explanations of them. | |
| 4 | + | ||
| 5 | + | If you encounter an error while compiling your code and are unable to resolve it yourself, please use the FPC and Lazarus [Forums](https://forum.lazarus.freepascal.org/), write to the [Lazarus](https://lists.lazarus-ide.org/listinfo/lazarus) or [Free Pascal](https://www.freepascal.org/maillist.html) mailing list. The problem may then be solved more quickly. | |
| 6 | + | ||
| 7 | + | If an error is encountered during compilation, the compiler does not generate an executable program. See further [[compile-time error|compile time errors]]. | |
| 8 | + | ||
| 9 | + | ## Errors during program execution | |
| 10 | + | ||
| 11 | + | The Free Pascal Compiler inserts code to detect a large number of error situations which might occur during program execution (eg divide by zero). If such an error situation occurs, the standard run-time library will terminate the program and print a runtime error number and the address at which the error occurred. See further [[runtime error|runtime errors]]. | |
| 12 | + | ||
| 13 | + | If you encounter a runtime error while running your program and are unable to resolve it yourself, please use the FPC and Lazarus [Forums](https://forum.lazarus.freepascal.org/), write to the [Lazarus](https://lists.lazarus-ide.org/listinfo/lazarus) or [Free Pascal](https://www.freepascal.org/maillist.html) mailing list. | |
| 14 | + | ||
| 15 | + | ## Bugs | |
| 16 | + | ||
| 17 | + | ### If the bug is already known | |
| 18 | + | ||
| 19 | + | Use the FPC and Lazarus [Bug Tracker's](http://bugs.freepascal.org/set_project.php) search capabilities. | |
| 20 | + | ||
| 21 | + | Known issues. Tip: If you are experiencing problems, for example with TEdit.SelStart -\> try searching "SelStart" (in quotes). If the bug is known: | |
| 22 | + | ||
| 23 | + | - reopen if the issue is resolved or the issue is closed - use the **Reopen Issue** button. | |
| 24 | + | - add your own note to the discussion if you received this error in another situation. | |
| 25 | + | ||
| 26 | + | To observe any changes to your bug report - use the **Monitor Issue** button. | |
| 27 | + | ||
| 28 | + | Note: You need to login to your account: [Login/Create an account](https://bugs.freepascal.org/login_page.php). | |
| 29 | + | ||
| 30 | + | ### If the bug is not already known | |
| 31 | + | ||
| 32 | + | 1. Go to the FPC and Lazarus [Bug Tracker](http://bugs.freepascal.org/set_project.php). | |
| 33 | + | 2. You must be logged in: [Login/Create account](https://bugs.freepascal.org/login_page.php). | |
| 34 | + | 3. Visit [Report Issue](http://bugs.freepascal.org/bug_report_advanced_page.php). Fill in as many fields as possible. The more accurate the better. | |
| 35 | + | ||
| 36 | + | - The **OS and Product Version** fields are especially important. If the data is not enough, they will not help you! Don't forget to mention the system features (big endian or 64-bit). | |
| 37 | + | - It is often helpful to send in a small test program to resolve the problem as soon as possible. | |
| 38 | + | - If you find graphic artifacts, it would not be superfluous to send a screenshot (in **png** or **jpeg**, but **not** in BMP!). | |
| 39 | + | - If it fails, try creating a backtrace. More information - [[Creating a Backtrace with GDB]]. | |
| 40 | + | - If possible, observe the behaviour of the buggy program on different platforms or with different widgetsets. | |
| 41 | + | ||
| 42 | + | It is also possible to get a bug fixed by paying for a solution, see [[Bounties]]. | |
| 43 | + | ||
| 44 | + | ## See also | |
| 45 | + | ||
| 46 | + | - [[Lazarus Help]]. | |
| 47 | + | - [[Forum|How to use the Forums]]. | |
| 48 | + | - [[How do I create a bug report]]. | |
| 49 | + | - [[Creating A Patch]]. | |
| 50 | + | - [[Tips on writing bug reports]]. | |
| 51 | + | ||
| 52 | + | --- | |
| 53 | + | *From the Free Pascal wiki, page "error messages", as it stood on 2023-04-19 after a change by Xhajt03, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).* |