As you've probably noticed, Perl 5.036 is out.

While reading its delta (to decide what changes need to be done to Syntax::Construct), I noticed the following paragraph:

SIGFPE no longer deferred

Floating-point exceptions are now delivered immediately, in the same way as other "fault"-like signals such as SIGSEGV. This means one has at least a chance to catch such a signal with a $SIG{FPE} handler, e.g. so that die can report the line in perl that triggered it.

I tried to come up with code that triggers the Floating Point E{xception/rror} but I couldn't find any. 

local $SIG{FPE} = sub { die "SIGNAL @_" };

my $x = 0;
print 2 / $x;

[download]

I tried with sqrt -1, no difference. I asked on IRC and was given an example with Inline::C, but even that doesn't behave differently in the new Perl version: 

#!/usr/bin/perl
use warnings;
use strict;

use Inline 'C' => <<'__C__';
float killme() {
    volatile float f = 0.0;
    volatile float c = f / f;
    return c;
}
__C__

local $SIG{FPE} = sub { die "SIGNAL @_" };
print killme();

[download]

Can anyone provide an example that shows how the FPE signal is emitted and how its trapping is different in 5.36?

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to FPE not deferred in 5.36 by choroba

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