PR/58184 CVS commit: src/tests/kernel

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

The following reply was made to PR lib/58184; it has been noted by GNATS.

From: "Taylor R Campbell" <riastradh%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/58184 CVS commit: src/tests/kernel
Date: Tue, 14 May 2024 15:54:17 +0000

 Module Name:	src
 Committed By:	riastradh
 Date:		Tue May 14 15:54:16 UTC 2024
 
 Modified Files:
 	src/tests/kernel: h_segv.c
 
 Log Message:
 tests/kernel/h_segv: Disable SIGFPE test on RISC-V.
 
 No floating-point exception traps on RISC-V.
 
 Also don't pass the result of divide-by-zero converted to integer to
 usleep.  Although the floating-point result of divide-by-zero is
 well-defined by IEEE 754 (+/-infinity), the outcome of C conversion
 to integer is not.  And while on some architectures this might return
 zero, on RISC-V it looks like it'll return all bits set.  And as of
 PR 58184, usleep now honours sleeps longer than 1sec, which means
 this will be waiting at least two billion microseconds, or about half
 an hour...
 
 So instead, just write the result to a volatile variable.
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.14 -r1.15 src/tests/kernel/h_segv.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.