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| author | Stefan Weil <sw@weilnetz.de> | 2017-10-16 22:29:12 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2017-10-20 11:16:27 +0200 |
| commit | e947d47da0b16e80d237c510e9d2e80799578c7f (patch) | |
| tree | 93004f1c604b0c81549a3ea04dd5acdfc456ffe6 /util | |
| parent | 063833a6ec2a6747e27c5f9866bb44c7e8de1265 (diff) | |
| download | qemu-e947d47da0b16e80d237c510e9d2e80799578c7f.tar.gz | |
oslib-posix: Fix compiler warning and some data types
gcc warning:
/qemu/util/oslib-posix.c:304:11: error:
variable ‘addr’ might be clobbered by ‘longjmp’ or ‘vfork’
[-Werror=clobbered]
Fix also some related data types:
numpages, hpagesize are used as pointer offset.
Always use size_t for them and also for the derived
numpages_per_thread and size_per_thread.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Message-id: 20171016202912.1117-1-sw@weilnetz.de
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'util')
| -rw-r--r-- | util/oslib-posix.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/util/oslib-posix.c b/util/oslib-posix.c index 80086c549f..382bd4a231 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -59,8 +59,8 @@ struct MemsetThread { char *addr; - uint64_t numpages; - uint64_t hpagesize; + size_t numpages; + size_t hpagesize; QemuThread pgthread; sigjmp_buf env; }; @@ -301,11 +301,7 @@ static void sigbus_handler(int signal) static void *do_touch_pages(void *arg) { MemsetThread *memset_args = (MemsetThread *)arg; - char *addr = memset_args->addr; - uint64_t numpages = memset_args->numpages; - uint64_t hpagesize = memset_args->hpagesize; sigset_t set, oldset; - int i = 0; /* unblock SIGBUS */ sigemptyset(&set); @@ -315,6 +311,10 @@ static void *do_touch_pages(void *arg) if (sigsetjmp(memset_args->env, 1)) { memset_thread_failed = true; } else { + char *addr = memset_args->addr; + size_t numpages = memset_args->numpages; + size_t hpagesize = memset_args->hpagesize; + size_t i; for (i = 0; i < numpages; i++) { /* * Read & write back the same value, so we don't @@ -351,7 +351,8 @@ static inline int get_memset_num_threads(int smp_cpus) static bool touch_all_pages(char *area, size_t hpagesize, size_t numpages, int smp_cpus) { - uint64_t numpages_per_thread, size_per_thread; + size_t numpages_per_thread; + size_t size_per_thread; char *addr = area; int i = 0; |