From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
commit b6313899f4ed2e76b8375cf8069556f5b94fbff0 upstream.
Since we make sure the destination buffer has at least strlen(orig) + 1,
no need to do a strncpy(dest, orig, strlen(orig)), just use strcpy(dest,
orig).
This silences this gcc 8.2 warning on Alpine Linux:
In function 'add_man_viewer',
inlined from 'perf_help_config' at builtin-help.c:284:3:
builtin-help.c:192:2: error: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Werror=stringop-truncation]
strncpy((*p)->name, name, len);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
builtin-help.c: In function 'perf_help_config':
builtin-help.c:187:15: note: length computed here
size_t len = strlen(name);
^~~~~~~~~~~~
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Fixes: 078006012401 ("perf_counter tools: add in basic glue from Git")
Link: https://lkml.kernel.org/n/tip-2f69l7drca427ob4km8i7kvo@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
tools/perf/builtin-help.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/perf/builtin-help.c
+++ b/tools/perf/builtin-help.c
@@ -179,7 +179,7 @@ static void add_man_viewer(const char *n
while (*p)
p = &((*p)->next);
*p = zalloc(sizeof(**p) + len + 1);
- strncpy((*p)->name, name, len);
+ strcpy((*p)->name, name);
}
static int supported_man_viewer(const char *name, size_t len)
