logf -lm ppc64el broken under qemu

[Shawn Landden]

This program does not work as expected:

#include <altivec.h>
#include <math.h>
#include <stdio.h>

int main(int argc) {
  vector float o = {4, 3, 2, 0};
  printf("%f %f %f %f\n", o[0], logf(argc), logf(4.0), logf(o[0]));
}

logf always returns -inf when it is run (gcc is analyzing the constant, logf(4.0)).

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: libc6:ppc64el 2.29-0ubuntu2
ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
Uname: Linux 5.0.0-13-generic x86_64
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri May 3 09:20:00 2019
Dependencies:
 gcc-9-base 9-20190402-1ubuntu1
 libc6 2.29-0ubuntu2
 libgcc1 1:9-20190402-1ubuntu1
 libidn2-0 2.0.5-1
 libunistring2 0.9.10-1ubuntu2
InstallationDate: Installed on 2019-02-23 (69 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190203)
PackageArchitecture: ppc64el
SourcePackage: glibc
UpgradeStatus: No upgrade log present (probably fresh install)