Re: [PATCH v2] Do not use %m in common code to print error messages

[Daniel P . Berrangé]

On Fri, Oct 18, 2019 at 03:07:16PM +0200, Thomas Huth wrote:
> The %m format specifier is an extension from glibc - and when compiling
> QEMU for NetBSD, the compiler correctly complains, e.g.:
> 
> /home/qemu/qemu-test.ELjfrQ/src/util/main-loop.c: In function 'sigfd_handler':
> /home/qemu/qemu-test.ELjfrQ/src/util/main-loop.c:64:13: warning: %m is only
>  allowed in syslog(3) like functions [-Wformat=]
>              printf("read from sigfd returned %zd: %m\n", len);
>              ^
> Let's use g_strerror() here instead, which is an easy-to-use wrapper
> around the thread-safe strerror_r() function.
> 
> While we're at it, also convert the "printf()" in main-loop.c into
> the preferred "error_report()".
> 
> Signed-off-by: Thomas Huth <address@hidden>
> ---
>  v2: Do not try to g_free() the strings
> 
>  hw/misc/tmp421.c | 4 ++--
>  util/main-loop.c | 3 ++-
>  util/systemd.c   | 4 ++--
>  3 files changed, 6 insertions(+), 5 deletions(-)

Reviewed-by: Daniel P. Berrangé <address@hidden>


Regards,
Daniel
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