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a09603f851
We are getting following warnings on gcc8 that break compilation:
$ make
CC jvmti/jvmti_agent.o
jvmti/jvmti_agent.c: In function ‘jvmti_open’:
jvmti/jvmti_agent.c:252:35: error: ‘/jit-’ directive output may be truncated \
writing 5 bytes into a region of size between 1 and 4096 [-Werror=format-truncation=]
snprintf(dump_path, PATH_MAX, "%s/jit-%i.dump", jit_path, getpid());
There's no point in checking the result of snprintf call in
jvmti_open, the following open call will fail in case the
name is mangled or too long.
Using tools/lib/ function scnprintf that touches the return value from
the snprintf() calls and thus get rid of those warnings.
$ make DEBUG=1
CC arch/x86/util/perf_regs.o
arch/x86/util/perf_regs.c: In function ‘arch_sdt_arg_parse_op’:
arch/x86/util/perf_regs.c:229:4: error: ‘strncpy’ output truncated before terminating nul
copying 2 bytes from a string of the same length [-Werror=stringop-truncation]
strncpy(prefix, "+0", 2);
^~~~~~~~~~~~~~~~~~~~~~~~
Using scnprintf instead of the strncpy (which we know is safe in here)
to get rid of that warning.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180702134202.17745-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.