Otherwise gcc with -Wunused will complain the return value is not used. Reported-by: Olaf Hering <o...@aepfle.de> Signed-off-by: Wei Liu <wei.l...@citrix.com> --- Cc: Ian Jackson <ian.jack...@eu.citrix.com> Cc: Olaf Hering <o...@aepfle.de> Cc: Juergen Gross <jgr...@suse.com> --- tools/misc/xen-detect.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-)
diff --git a/tools/misc/xen-detect.c b/tools/misc/xen-detect.c index a62747d316..fd187a4be6 100644 --- a/tools/misc/xen-detect.c +++ b/tools/misc/xen-detect.c @@ -90,8 +90,15 @@ static int check_for_xen(int pv_context) found: cpuid(base + 1, regs, pv_context); if ( regs[0] ) - asprintf(&ver, "V%u.%u", - (uint16_t)(regs[0] >> 16), (uint16_t)regs[0]); + { + int r = asprintf(&ver, "V%u.%u", (uint16_t)(regs[0] >> 16), + (uint16_t)regs[0]); + if ( r < 0 ) + { + perror("asprintf failed\n"); + exit(EXIT_FAILURE); + } + } return regs[0]; } @@ -193,8 +200,14 @@ static enum guest_type check_sysfs(void) if ( tmp ) tmp[strlen(tmp) - 1] = 0; if ( str && tmp ) - asprintf(&ver, "V%s.%s", str, tmp); - else + { + int r = asprintf(&ver, "V%s.%s", str, tmp); + if ( r < 0 ) + { + perror("asprintf failed\n"); + exit(EXIT_FAILURE); + } + } else ver = strdup("unknown version"); free(tmp); -- 2.11.0 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel