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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
commit03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch)
treefa581f6dc1c0596391690d1f67eceef3af8246dc /lib/kasprintf.c
parentd4e493caf788ef44982e131ff9c786546904d934 (diff)
Linux-libre 4.5-gnu
Diffstat (limited to 'lib/kasprintf.c')
-rw-r--r--lib/kasprintf.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/lib/kasprintf.c b/lib/kasprintf.c
index f194e6e59..7f6c506a4 100644
--- a/lib/kasprintf.c
+++ b/lib/kasprintf.c
@@ -13,19 +13,21 @@
/* Simplified asprintf. */
char *kvasprintf(gfp_t gfp, const char *fmt, va_list ap)
{
- unsigned int len;
+ unsigned int first, second;
char *p;
va_list aq;
va_copy(aq, ap);
- len = vsnprintf(NULL, 0, fmt, aq);
+ first = vsnprintf(NULL, 0, fmt, aq);
va_end(aq);
- p = kmalloc_track_caller(len+1, gfp);
+ p = kmalloc_track_caller(first+1, gfp);
if (!p)
return NULL;
- vsnprintf(p, len+1, fmt, ap);
+ second = vsnprintf(p, first+1, fmt, ap);
+ WARN(first != second, "different return values (%u and %u) from vsnprintf(\"%s\", ...)",
+ first, second, fmt);
return p;
}