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qemu: Use null QMP logger when the logger parameter is nil

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Or else LaunchQemu() ends up dereferencing a nil pointer and panic'ing.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Samuel Ortiz 2016-09-09 18:45:31 +02:00
parent 7d4199a449
commit f57201989b
1 changed files with 4 additions and 0 deletions
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4
qemu.go
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@ -49,6 +49,10 @@ import (
// will be returned if the launch succeeds. Otherwise a string containing // will be returned if the launch succeeds. Otherwise a string containing
// the contents of stderr + a Go error object will be returned. // the contents of stderr + a Go error object will be returned.
func LaunchQemu(ctx context.Context, params []string, fds []*os.File, logger QMPLog) (string, error) { func LaunchQemu(ctx context.Context, params []string, fds []*os.File, logger QMPLog) (string, error) {
if logger == nil {
logger = qmpNullLogger{}
}
errStr := "" errStr := ""
cmd := exec.Command("qemu-system-x86_64", params...) cmd := exec.Command("qemu-system-x86_64", params...)
if len(fds) > 0 { if len(fds) > 0 {