2020-02-25 06:46:33

by Xiao Yang

Subject: [PATCH] tools/perf/util/*.c: Use "%zd" output format for size_t type

Avoid the following errors when building perf:
-----------------------------------------------
util/session.c: In function 'perf_session__process_compressed_event':
util/session.c:91:11: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'size_t {aka unsigned int}' [-Werror=format=]
pr_debug("decomp (B): %ld to %ld\n", src_size, decomp_size);
...
til/zstd.c: In function 'zstd_decompress_stream':
util/zstd.c:102:11: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'size_t {aka unsigned int}' [-Werror=format=]
pr_err("failed to decompress (B): %ld -> %ld, dst_size %ld : %s\n",
...
-----------------------------------------------

Signed-off-by: Xiao Yang <[email protected]>
---
tools/perf/util/session.c | 2 +-
tools/perf/util/zstd.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index d0d7d25b23e3..5b74d606b4b7 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -88,7 +88,7 @@ static int perf_session__process_compressed_event(struct perf_session *session,
session->decomp_last = decomp;
}

- pr_debug("decomp (B): %ld to %ld\n", src_size, decomp_size);
+ pr_debug("decomp (B): %zd to %zd\n", src_size, decomp_size);

return 0;
}
diff --git a/tools/perf/util/zstd.c b/tools/perf/util/zstd.c
index d2202392ffdb..48dd2b018c47 100644
--- a/tools/perf/util/zstd.c
+++ b/tools/perf/util/zstd.c
@@ -99,7 +99,7 @@ size_t zstd_decompress_stream(struct zstd_data *data, void *src, size_t src_size
while (input.pos < input.size) {
ret = ZSTD_decompressStream(data->dstream, &output, &input);
if (ZSTD_isError(ret)) {
- pr_err("failed to decompress (B): %ld -> %ld, dst_size %ld : %s\n",
+ pr_err("failed to decompress (B): %zd -> %zd, dst_size %zd : %s\n",
src_size, output.size, dst_size, ZSTD_getErrorName(ret));
break;
}
--
2.21.0

2020-02-25 23:04:38

by Joe Perches

Subject: Re: [PATCH] tools/perf/util/*.c: Use "%zd" output format for size_t type

On Tue, 2020-02-25 at 14:39 +0800, Xiao Yang wrote:
> Avoid the following errors when building perf:
> -----------------------------------------------
> util/session.c: In function 'perf_session__process_compressed_event':
> util/session.c:91:11: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'size_t {aka unsigned int}' [-Werror=format=]
> pr_debug("decomp (B): %ld to %ld\n", src_size, decomp_size);
[]
> diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
[]
> @@ -88,7 +88,7 @@ static int perf_session__process_compressed_event(struct perf_session *session,
> session->decomp_last = decomp;
> }
>
> - pr_debug("decomp (B): %ld to %ld\n", src_size, decomp_size);
> + pr_debug("decomp (B): %zd to %zd\n", src_size, decomp_size);

likely better as %zu, etc...

2020-02-26 01:02:55

by Xiao Yang

Subject: Re: [PATCH] tools/perf/util/*.c: Use "%zd" output format for size_t type

On 2020/2/26 7:02, Joe Perches wrote:
> On Tue, 2020-02-25 at 14:39 +0800, Xiao Yang wrote:
>> Avoid the following errors when building perf:
>> -----------------------------------------------
>> util/session.c: In function 'perf_session__process_compressed_event':
>> util/session.c:91:11: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'size_t {aka unsigned int}' [-Werror=format=]
>> pr_debug("decomp (B): %ld to %ld\n", src_size, decomp_size);
> []
>> diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
> []
>> @@ -88,7 +88,7 @@ static int perf_session__process_compressed_event(struct perf_session *session,
>> session->decomp_last = decomp;
>> }
>>
>> - pr_debug("decomp (B): %ld to %ld\n", src_size, decomp_size);
>> + pr_debug("decomp (B): %zd to %zd\n", src_size, decomp_size);
> likely better as %zu, etc...
Hi,

Sorry, %zu is obvious better.
I will send v2 patch shortly.

Thanks,
Xiao Yang
>
>
>
> .
>