[Bug 294214] clang builtin functions break libm

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 294214] clang builtin functions break libm"
Go to: [ bottom of page ] [ top of archives ] [ this month ]

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 03 Apr 2026 01:45:28 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=294214

--- Comment #6 from Steve Kargl <kargl@FreeBSD.org> ---
Ugh*ugh.

The addition of '#pragma STDC FENV_ACCESS ON' changes
clang's to agree with fmax(3).


% cc -o z fmax.c -lm && ./z
fmax( 0,  0) =  0 expecting  0
fmax(-0,  0) = -0 expecting  0 <-- FAILED
fmax( 0, -0) =  0 expecting  0
fmax(-0, -0) = -0 expecting -0


% cc -o z fmax.c -DWITH_PRAGMA -lm && ./z
fmax( 0,  0) =  0 expecting  0
fmax(-0,  0) =  0 expecting  0
fmax( 0, -0) =  0 expecting  0
fmax(-0, -0) = -0 expecting -0

-- 
You are receiving this mail because:
You are the assignee for the bug.