* [PATCH 1/3] libtracefs utest: Silence string-plus-int warnings
@ 2021-04-23 3:54 Ian Rogers
2021-04-23 3:54 ` [PATCH 2/3] libtracefs utest: Fix a sometimes uninitialized variable Ian Rogers
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Ian Rogers @ 2021-04-23 3:54 UTC (permalink / raw)
To: linux-trace-devel, Tzvetomir Stoyanov, Steven Rostedt; +Cc: Ian Rogers
Fix warnings of the form:
utest/tracefs-utest.c:476:35: error: adding 'int' to a string does not append to the string [-Werror,-Wstring-plus-int]
CU_TEST(strstr(kprobes, KPROBE_1 + 2) != NULL);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
Signed-off-by: Ian Rogers <irogers@google.com>
---
utest/tracefs-utest.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/utest/tracefs-utest.c b/utest/tracefs-utest.c
index edb3a3d..c5efd5f 100644
--- a/utest/tracefs-utest.c
+++ b/utest/tracefs-utest.c
@@ -453,21 +453,21 @@ static void test_instance_file(void)
CU_TEST(ret == strlen(KPROBE_1));
kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
CU_TEST(kprobes != NULL);
- CU_TEST(strstr(kprobes, KPROBE_1 + 2) != NULL);
+ CU_TEST(strstr(kprobes, &KPROBE_1[2]) != NULL);
free(kprobes);
ret = tracefs_instance_file_append(NULL, KPROB_EVTS, KPROBE_2);
CU_TEST(ret == strlen(KPROBE_2));
kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
CU_TEST(kprobes != NULL);
- CU_TEST(strstr(kprobes, KPROBE_2 + 2) != NULL);
+ CU_TEST(strstr(kprobes, &KPROBE_2[2]) != NULL);
free(kprobes);
ret = tracefs_instance_file_append(NULL, KPROB_EVTS, KPROBE_1_RM);
CU_TEST(ret == strlen(KPROBE_1_RM));
kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
CU_TEST(kprobes != NULL);
- CU_TEST(strstr(kprobes, KPROBE_1 + 2) == NULL);
+ CU_TEST(strstr(kprobes, &KPROBE_1[2]) == NULL);
free(kprobes);
ret = tracefs_instance_file_clear(NULL, KPROB_EVTS);
--
2.31.1.498.g6c1eba8ee3d-goog
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH 2/3] libtracefs utest: Fix a sometimes uninitialized variable.
2021-04-23 3:54 [PATCH 1/3] libtracefs utest: Silence string-plus-int warnings Ian Rogers
@ 2021-04-23 3:54 ` Ian Rogers
2021-04-23 3:54 ` [PATCH 3/3] libtracefs utest: Make a null string fatal if it is passed to strstr Ian Rogers
2021-04-26 11:25 ` [PATCH 1/3] libtracefs utest: Silence string-plus-int warnings Tzvetomir Stoyanov
2 siblings, 0 replies; 5+ messages in thread
From: Ian Rogers @ 2021-04-23 3:54 UTC (permalink / raw)
To: linux-trace-devel, Tzvetomir Stoyanov, Steven Rostedt; +Cc: Ian Rogers
The warning looks like:
utest/tracefs-utest.c:706:7: error: variable 'fd' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized]
if (rstat != -1)
^~~~~~~~~~~
Signed-off-by: Ian Rogers <irogers@google.com>
---
utest/tracefs-utest.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/utest/tracefs-utest.c b/utest/tracefs-utest.c
index c5efd5f..a0d911b 100644
--- a/utest/tracefs-utest.c
+++ b/utest/tracefs-utest.c
@@ -659,7 +659,7 @@ static bool check_option(struct tracefs_instance *instance,
bool supported;
struct stat st;
char buf[10];
- int fd;
+ int fd = 0;
int r;
int rstat;
--
2.31.1.498.g6c1eba8ee3d-goog
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH 3/3] libtracefs utest: Make a null string fatal if it is passed to strstr
2021-04-23 3:54 [PATCH 1/3] libtracefs utest: Silence string-plus-int warnings Ian Rogers
2021-04-23 3:54 ` [PATCH 2/3] libtracefs utest: Fix a sometimes uninitialized variable Ian Rogers
@ 2021-04-23 3:54 ` Ian Rogers
2021-04-26 11:25 ` [PATCH 1/3] libtracefs utest: Silence string-plus-int warnings Tzvetomir Stoyanov
2 siblings, 0 replies; 5+ messages in thread
From: Ian Rogers @ 2021-04-23 3:54 UTC (permalink / raw)
To: linux-trace-devel, Tzvetomir Stoyanov, Steven Rostedt; +Cc: Ian Rogers
strstr will segv for a null string. If a string is passed to strstr and
is null there is no point segving, it is better to fail the earlier test
with a fatal and continue the rest of the suite. This allows the suite
to complete with an error rather than die.
Signed-off-by: Ian Rogers <irogers@google.com>
---
utest/tracefs-utest.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/utest/tracefs-utest.c b/utest/tracefs-utest.c
index a0d911b..e846dc4 100644
--- a/utest/tracefs-utest.c
+++ b/utest/tracefs-utest.c
@@ -452,21 +452,21 @@ static void test_instance_file(void)
ret = tracefs_instance_file_write(NULL, KPROB_EVTS, KPROBE_1);
CU_TEST(ret == strlen(KPROBE_1));
kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
- CU_TEST(kprobes != NULL);
+ CU_TEST_FATAL(kprobes != NULL);
CU_TEST(strstr(kprobes, &KPROBE_1[2]) != NULL);
free(kprobes);
ret = tracefs_instance_file_append(NULL, KPROB_EVTS, KPROBE_2);
CU_TEST(ret == strlen(KPROBE_2));
kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
- CU_TEST(kprobes != NULL);
+ CU_TEST_FATAL(kprobes != NULL);
CU_TEST(strstr(kprobes, &KPROBE_2[2]) != NULL);
free(kprobes);
ret = tracefs_instance_file_append(NULL, KPROB_EVTS, KPROBE_1_RM);
CU_TEST(ret == strlen(KPROBE_1_RM));
kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
- CU_TEST(kprobes != NULL);
+ CU_TEST_FATAL(kprobes != NULL);
CU_TEST(strstr(kprobes, &KPROBE_1[2]) == NULL);
free(kprobes);
@@ -1026,7 +1026,7 @@ static void current_clock_check(struct tracefs_instance *instance, const char *c
char *str;
clocks = tracefs_instance_file_read(instance, TRACE_CLOCK, &size);
- CU_TEST(clocks != NULL);
+ CU_TEST_FATAL(clocks != NULL);
CU_TEST(size > strlen(clock));
str = strstr(clocks, clock);
CU_TEST(str != NULL);
@@ -1041,7 +1041,7 @@ static void test_instance_get_clock(struct tracefs_instance *instance)
const char *clock;
clock = tracefs_get_clock(instance);
- CU_TEST(clock != NULL);
+ CU_TEST_FATAL(clock != NULL);
current_clock_check(instance, clock);
free((char *)clock);
}
--
2.31.1.498.g6c1eba8ee3d-goog
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH 1/3] libtracefs utest: Silence string-plus-int warnings
2021-04-23 3:54 [PATCH 1/3] libtracefs utest: Silence string-plus-int warnings Ian Rogers
2021-04-23 3:54 ` [PATCH 2/3] libtracefs utest: Fix a sometimes uninitialized variable Ian Rogers
2021-04-23 3:54 ` [PATCH 3/3] libtracefs utest: Make a null string fatal if it is passed to strstr Ian Rogers
@ 2021-04-26 11:25 ` Tzvetomir Stoyanov
2021-04-26 15:16 ` Ian Rogers
2 siblings, 1 reply; 5+ messages in thread
From: Tzvetomir Stoyanov @ 2021-04-26 11:25 UTC (permalink / raw)
To: Ian Rogers; +Cc: Linux Trace Devel, Steven Rostedt
On Fri, Apr 23, 2021 at 6:54 AM Ian Rogers <irogers@google.com> wrote:
>
> Fix warnings of the form:
>
> utest/tracefs-utest.c:476:35: error: adding 'int' to a string does not append to the string [-Werror,-Wstring-plus-int]
> CU_TEST(strstr(kprobes, KPROBE_1 + 2) != NULL);
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
>
Hi Ian,
Thanks for testing and sending this patch. What
compiler/version/options you are using to get these warnings ?
The whole patchset looks good to me.
Acked-by: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
> Signed-off-by: Ian Rogers <irogers@google.com>
> ---
> utest/tracefs-utest.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/utest/tracefs-utest.c b/utest/tracefs-utest.c
> index edb3a3d..c5efd5f 100644
> --- a/utest/tracefs-utest.c
> +++ b/utest/tracefs-utest.c
> @@ -453,21 +453,21 @@ static void test_instance_file(void)
> CU_TEST(ret == strlen(KPROBE_1));
> kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
> CU_TEST(kprobes != NULL);
> - CU_TEST(strstr(kprobes, KPROBE_1 + 2) != NULL);
> + CU_TEST(strstr(kprobes, &KPROBE_1[2]) != NULL);
> free(kprobes);
>
> ret = tracefs_instance_file_append(NULL, KPROB_EVTS, KPROBE_2);
> CU_TEST(ret == strlen(KPROBE_2));
> kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
> CU_TEST(kprobes != NULL);
> - CU_TEST(strstr(kprobes, KPROBE_2 + 2) != NULL);
> + CU_TEST(strstr(kprobes, &KPROBE_2[2]) != NULL);
> free(kprobes);
>
> ret = tracefs_instance_file_append(NULL, KPROB_EVTS, KPROBE_1_RM);
> CU_TEST(ret == strlen(KPROBE_1_RM));
> kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
> CU_TEST(kprobes != NULL);
> - CU_TEST(strstr(kprobes, KPROBE_1 + 2) == NULL);
> + CU_TEST(strstr(kprobes, &KPROBE_1[2]) == NULL);
> free(kprobes);
>
> ret = tracefs_instance_file_clear(NULL, KPROB_EVTS);
> --
> 2.31.1.498.g6c1eba8ee3d-goog
>
--
Tzvetomir (Ceco) Stoyanov
VMware Open Source Technology Center
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 1/3] libtracefs utest: Silence string-plus-int warnings
2021-04-26 11:25 ` [PATCH 1/3] libtracefs utest: Silence string-plus-int warnings Tzvetomir Stoyanov
@ 2021-04-26 15:16 ` Ian Rogers
0 siblings, 0 replies; 5+ messages in thread
From: Ian Rogers @ 2021-04-26 15:16 UTC (permalink / raw)
To: Tzvetomir Stoyanov; +Cc: Linux Trace Devel, Steven Rostedt
On Mon, Apr 26, 2021 at 4:25 AM Tzvetomir Stoyanov
<tz.stoyanov@gmail.com> wrote:
>
> On Fri, Apr 23, 2021 at 6:54 AM Ian Rogers <irogers@google.com> wrote:
> >
> > Fix warnings of the form:
> >
> > utest/tracefs-utest.c:476:35: error: adding 'int' to a string does not append to the string [-Werror,-Wstring-plus-int]
> > CU_TEST(strstr(kprobes, KPROBE_1 + 2) != NULL);
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
> >
>
> Hi Ian,
> Thanks for testing and sending this patch. What
> compiler/version/options you are using to get these warnings ?
> The whole patchset looks good to me.
(Re-send with plain-text mode enabled).
Thanks, the compiler is clang 12.
Ian
>
> Acked-by: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
>
>
>
> > Signed-off-by: Ian Rogers <irogers@google.com>
> > ---
> > utest/tracefs-utest.c | 6 +++---
> > 1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/utest/tracefs-utest.c b/utest/tracefs-utest.c
> > index edb3a3d..c5efd5f 100644
> > --- a/utest/tracefs-utest.c
> > +++ b/utest/tracefs-utest.c
> > @@ -453,21 +453,21 @@ static void test_instance_file(void)
> > CU_TEST(ret == strlen(KPROBE_1));
> > kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
> > CU_TEST(kprobes != NULL);
> > - CU_TEST(strstr(kprobes, KPROBE_1 + 2) != NULL);
> > + CU_TEST(strstr(kprobes, &KPROBE_1[2]) != NULL);
> > free(kprobes);
> >
> > ret = tracefs_instance_file_append(NULL, KPROB_EVTS, KPROBE_2);
> > CU_TEST(ret == strlen(KPROBE_2));
> > kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
> > CU_TEST(kprobes != NULL);
> > - CU_TEST(strstr(kprobes, KPROBE_2 + 2) != NULL);
> > + CU_TEST(strstr(kprobes, &KPROBE_2[2]) != NULL);
> > free(kprobes);
> >
> > ret = tracefs_instance_file_append(NULL, KPROB_EVTS, KPROBE_1_RM);
> > CU_TEST(ret == strlen(KPROBE_1_RM));
> > kprobes = tracefs_instance_file_read(NULL, KPROB_EVTS, &size);
> > CU_TEST(kprobes != NULL);
> > - CU_TEST(strstr(kprobes, KPROBE_1 + 2) == NULL);
> > + CU_TEST(strstr(kprobes, &KPROBE_1[2]) == NULL);
> > free(kprobes);
> >
> > ret = tracefs_instance_file_clear(NULL, KPROB_EVTS);
> > --
> > 2.31.1.498.g6c1eba8ee3d-goog
> >
>
>
> --
> Tzvetomir (Ceco) Stoyanov
> VMware Open Source Technology Center
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-04-26 15:17 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2021-04-23 3:54 [PATCH 1/3] libtracefs utest: Silence string-plus-int warnings Ian Rogers
2021-04-23 3:54 ` [PATCH 2/3] libtracefs utest: Fix a sometimes uninitialized variable Ian Rogers
2021-04-23 3:54 ` [PATCH 3/3] libtracefs utest: Make a null string fatal if it is passed to strstr Ian Rogers
2021-04-26 11:25 ` [PATCH 1/3] libtracefs utest: Silence string-plus-int warnings Tzvetomir Stoyanov
2021-04-26 15:16 ` Ian Rogers
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