[Issue 13543] std.file.FileException has useless __FILE__ and __LINE__ arguments tacked on

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=13543

--- Comment #5 from bearophile_hugs at eml.cc ---
(In reply to bearophile_hugs from comment #3)

> If I open a file, and the opening fails, I'd like the
> exception to tell me what damned line of my code has tried to open that
> file.

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A Python script (both files are missing):


f1 = open("some_file1.txt")
f2 = open("some_file2.txt")


Gives information that helps to locate what's the line that has tried to open
the missing file:

Traceback (most recent call last):
  File "...\test.py", line 1, in <module>
    f1 = open("some_file1.txt")
IOError: [Errno 2] No such file or directory: 'some_file1.txt'

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A similar D program gives line number inside the library code, but I'd like an
exception that tells me that the problem is in test.d at line 3:

void main() {
    import std.stdio;
    auto f1 = File("some_file1.txt");
    auto f2 = File("some_file2.txt");
}


std.exception.ErrnoException at std\stdio.d(364): Cannot open file
`some_file1.txt' in mode `rb' (No such file or directory)
----------------
0x0040447B in @safe shared(core.stdc.stdio._iobuf)*
std.exception.__T12errnoEnforceTPOS4core4stdc5stdio6_iobufVAyaa11_7374645c737464696f2e64Vki364Z.errnoEnforce(shared(core.stdc.stdio._iobuf)*,
lazy immutable(char)[])
...

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