Compiler Error Line Number
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Support Search GitHub This repository Watch 758 Star 5,943 Fork 4,806 arduino/Arduino Code Issues 664 Pull requests 118 Projects 0 Wiki Pulse Graphs New issue Error message line numbers incorrect when compiling multiple .ino files #1479 Closed multicharts compile error line 0 nickgammon opened this Issue Jun 22, 2013 · 4 comments Projects None yet Labels Component:
Compile Error Line 0 Column 0
IDE Component: Preprocessor Milestone Release 1.6.6 Assignees ffissore 4 participants nickgammon commented Jun 22, 2013 IDE 1.0.4. Test case: main sketch: /* modify compiler to generate line number Test sketch */ Open new tab in IDE, create tab named: partb.ino Put this in partb.ino: #include
Modify Compiler To Generate Line Number Attributes
this line has the error (line 5) 3, 4 }; byte bar [] = { 5, 6, 7, 8, // <---- this line given as error line (line 14) 9, 10, 11}; Compile (eg. with Uno as target). Error is reported at line 14: partb:14: error: expected `}' before numeric constant partb:14: error: expected ',' or ';' before numeric constant partb:15: error: expected declaration before '}' token However error is actually at line 5. Generated modify compiler options to generate line number combined (concatenated) file in the temporary directory is: #line 1 "sketch_jun22b.ino" /* Test sketch */ #line 1 "partb.ino" #include
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Modify Compiler Options To Generate Line Number Attributes Eclipse Maven
OllyR Jr. Member Posts: 62 Karma: 0[add] Understanding compiling error responses. Sep
Missing Line Number Attributes Modify Compiler
23, 2012, 05:16 pm Maybe its just me, but it strikes me as logical, that when you get arduino compiler error messages an error code back from trying to compile the sketch, ie:"Turret5.cpp:50:41: error: expected identifier before '(' token"the address "50:41" should refer to the location of the error.except on mine it https://github.com/arduino/Arduino/issues/1479 doesn't, the first figure is several lines out, and i have no idea what the 41 means....could someone enlighten me please?Thanks! dxw00d Faraday Member Posts: 3,113 Karma: 84[add] Re: Understanding compiling error responses. #1 Sep 23, 2012, 05:32 pm Unfortunately, the compilation errors are generated after the IDE makes its additions to your sketch, so the line numbers are a bit http://forum.arduino.cc/index.php?topic=124082.0 out. The second number probably (I haven't looked at it closely) relates to the error message. James C4S Tesla Member Posts: 6,443 Karma: 201[add] Baldengineer Blog Re: Understanding compiling error responses. #2 Sep 23, 2012, 05:43 pm Quote from: OllyR on Sep 23, 2012, 05:16 pmMaybe its just me, but it strikes me as logical, that when you get an error code back from trying to compile the sketch, ie:The IDE adds a couple of lines to your code before the compiler gets it. However, it generally backs out number from the error before printing it in the status window.Also, keep in mind the compiler doesn't always identify the line that is the actual problem. It is just the line where the compiler ran into a problem. This complicates the issue of identifying where the issue occurred.Quote from: OllyR on Sep 23, 2012, 05:16 pm"Turret5.cpp:50:41: error: expected identifier before '(' token"I have not seen an error message like that before. Since you have an example, you might want to post your code. Capacitor Expert By Day, Enginerd by
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wrong line text on compile error? Tom rvnash 2015-07-27 00:30:20 UTC #2 I see the same problem. The line number of the error is correct, but the display of the line with the error is incorrect. Example screen shot. Screen Shot 2015-07-26 at 8.33.48 PM.png516x670 58.1 KB ScruffR 2015-07-27 03:51:02 UTC #3 This is a common C compiler thing, since your code cannot be "understood" properly due to violating the semantic structure the compiler has to the last thing he did actually "understand". The line number and error indicator should be understood as hints where the error most likely will be found rather than an exact location - since it does not compile the compiler obviously doesn't quite get what's meant and has to guess a bit rvnash 2015-07-27 11:46:52 UTC #4 @ScruffR ... thanks for the reply, but I'm afraid you haven't looked into this deeply enough and your answer is incorrect. There is definitely something wrong here, and it can be demonstrated in a few ways. First, in the example I gave the compiler has correctly understood the line with the error, but the line it shows is different than the one it reports. The error is on line 8, character 1, where the close brace '}' is identified as the syntax error. But the line it shows is from much earlier in the file, line 3, although the caret correctly shows the first character. Secondly, you can demonstrate this error with examples where there are no syntax errors, but rather just semantic errors. See this screen shot. Screen Shot 2015-07-27 at 7.47.28 AM.png462x556 52.2 KB In this example I introduced an error and a warning. In both cases the correct line and character position is identified by the compiler. In the first case the error is on line 12, character 15 where I attempted to 'call' a double. Again, the line it shows is wrong, although the caret correctly identifies the position on the line. In the second case the warning on an unused local again shows exactly the same characteristic. If I were to guess, what looks like is going on is an off-by-one error or other indexing problem when trying to retrieve the line that goes with a given warning or error. Note how in this second example it shows line 7 for the error that is on line 12. I suspect that my original example shows something similar where the declaration of 'i' is displayed because it is 'unused' or used before initialized dependin