Fix: incorrect specifier %lu used with size_t argument

Fixes the following warning on 32-bit targets:

libtool: compile:  gcc -DHAVE_CONFIG_H -I../../../include -I../../../include -I../../../src -include config.h -I/build/include -I/home/jenkins/workspace/lttng-tools_master_portbuild/arch/armhf/babeltrace_version/stable-1.5/build/std/conf/std/liburcu_version/master/test_type/base/deps/build/include -Wall -Wno-incomplete-setjmp-declaration -Wdiscarded-qualifiers -Wmissing-declarations -Wmissing-prototypes -Wmissing-parameter-type -fno-strict-aliasing -pthread -g -O2 -MT consumer-stream.lo -MD -MP -MF .deps/consumer-stream.Tpo -c consumer-stream.c  -fPIC -DPIC -o .libs/consumer-stream.o
In file included from ../../../src/common/common.h:12:0,
                 from consumer.c:25:
consumer.c: In function ‘lttng_consumer_on_read_subbuffer_mmap’:
../../../src/common/error.h:161:35: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 7 has type ‘size_t {aka unsigned int}’ [-Wformat=]
 #define DBG(fmt, args...) _ERRMSG("DEBUG1", PRINT_DBG, fmt, ## args)
                                   ^
../../../src/common/error.h:136:51: note: in definition of macro ‘__lttng_print’
    fprintf((type) == PRINT_MSG ? stdout : stderr, fmt, ## args); \
                                                   ^~~
../../../src/common/error.h:161:27: note: in expansion of macro ‘_ERRMSG’
 #define DBG(fmt, args...) _ERRMSG("DEBUG1", PRINT_DBG, fmt, ## args)
                           ^~~~~~~
consumer.c:1688:2: note: in expansion of macro ‘DBG’
  DBG("Consumer mmap write() ret %zd (len %lu)", ret, write_len);
  ^~~

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Id9a571d8e94105428833baa053c6463b91484a03

diff --git a/src/common/consumer/consumer.c b/src/common/consumer/consumer.c
index 52b15867b968afdcd16848235093d37eb3bd5af8..50951fd28db4f645e9ec1c75e6984193a7416d10 100644 (file)
--- a/src/common/consumer/consumer.c
+++ b/src/common/consumer/consumer.c
@@ -1685,7 +1685,7 @@ ssize_t lttng_consumer_on_read_subbuffer_mmap(
         * receive a ret value that is bigger than len.
         */
        ret = lttng_write(outfd, buffer->data, write_len);
-       DBG("Consumer mmap write() ret %zd (len %lu)", ret, write_len);
+       DBG("Consumer mmap write() ret %zd (len %zu)", ret, write_len);
        if (ret < 0 || ((size_t) ret != write_len)) {
                /*
                 * Report error to caller if nothing was written else at least send the