[dmd-internals] changeset 455

[Andrei Alexandrescu]

On 04/30/2010 07:25 AM, Steve Schveighoffer wrote:
> This is not important.  A library to print out the last unit test failure is really easy.  printf is not required, write will be sufficient.  All it needs is a little compiler help.
>
> At the beginning of every unit test, the compiler should insert the following code:
>
> unittest {    __unittestFile = __FILE__;    __unittestLine = __LINE__;
>      ...
> }
>
> Then, during unittest, the runtime inserts a signal handler for SEGV:
>
> __gshared string __unittestFile = "";
> __gshared uint __unittestLine = 0;
> __gshared string msg = "unittest SEGV: ";
>
> extern(C) void unittestSegv(int sig)
> {
>     char[11] lineno;
>     int linenostart = 0;
>     do
>     {
>        lineno[$-1-linenolength] = '0' + __unittestLine  % 10;
>        __unittestLine /= 10;
>        --linenostart;
>     } while(__unittestLine>  0);
>
>     write(2, msg.ptr, msg.length);
>     write(2, __unittestFile.ptr, __unittestFile.length);
>     write(2, "@", 1);
>     write(2, lineno.ptr + linenostart, lineno.length - linenostart);
>     write(2, "\n", 1);
>     exit(1);
> }

Walter, if this code does work, please do insert it in the compiler. 
Actually Steve, please bugzillize this so it doesn't get forgotten.

It's an important matter.


Andrei