An example of Clang error messages

[Jacob Carlborg]

On 3/5/10 19:42, bearophile wrote:
> Walter Bright:
>
>> Here's what DMC does:
>>
>>       x = (a + b) * (c + d) / (e + f);
>>                           ^
>> test.cpp(6) : Error: illegal operand types
>> Had: Foo
>> and: int
>>
>> and here's what DMD does:
>>
>> test.d(6): Error: incompatible types for ((c) + (d)): 'Foo' and 'int'
>
> [What DMD currently does (plus the last thing you have very quickly implemented, I have asked for that feature of Mathematica lot of time ago) is enough for me.]
>
> For a human those two error messages give about the same information. But for a IDE that has to parse the error messages to show something graphically the error message with the "^" can be better.

I think column number would be a lot easier for an IDE to parse than a "^".

> Regarding the excessive amount of lines of error messages shown on the command line when you use the "^", with DMD I usually only read the first error message or the few first ones, ignoring the successive error messages, because the successive ones are usually useless. With GCC I sometimes use a compilation flag (-Wfatal-errors) that when present makes the compiler show only the first of few first error messages.
>
> Bye,
> bearophile