[haiku-development] Re: replacing runtime_loader
- From: Tim Kelly <gtkelly@xxxxxxxxxxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Wed, 16 Mar 2016 20:38:13 -0400
François Revol wrote:
That's because historically BeOS error codes are negative (which makes
much more sense than using "return -EINVAL" (which is both errorprone et
ugly) (but POSIX or ISO C doesn't care about making sense).
But some software are so badly written and full of those -EFOO that we
have to resort to this madness to redefine errors as positive integers
to abide by ISO C and POSIX (although POSIX did change its mind at one
point from "non 0" to "positive"), and link to a posix_error_mapper
static library.
Ah - thank you.
So, no, I didn't realize I was seeing the actual return value. It took a
while. :-)
There's an "error" command in the shell for that :)
Oh - indeed, this could be handy:
~> error
usage: error <error number>
Prints clear text error messages for given error numbers.
Would the reverse be useful? - enter a string and get the error code
value: error [-n] 0x80000005 --> Invalid Argument; error -s 'Invalid
Argument' --> 0x8000005 or B_BAD_VALUE or some decomposition as
appropriate, and maybe any complimentary values
case B_NO_MEMORY:
case B_POSIX_ENOMEM:
// ENOMEM
return "Out of memory";
Just a thought.
tim
--
A leopard can't change its spots.
-- Society
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