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path: root/lib/libc/src/stdio/vsnprintf.c
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Diffstat (limited to 'lib/libc/src/stdio/vsnprintf.c')
-rw-r--r--lib/libc/src/stdio/vsnprintf.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/libc/src/stdio/vsnprintf.c b/lib/libc/src/stdio/vsnprintf.c
index 0e29600..24b2df6 100644
--- a/lib/libc/src/stdio/vsnprintf.c
+++ b/lib/libc/src/stdio/vsnprintf.c
@@ -123,6 +123,12 @@ vsnprintf(char *s, size_t size, const char *fmt, va_list ap)
num = __va_arg(ap, uint64_t);
itoa(num, num_buf, 16);
tmp_len = strlen(num_buf);
+ if (pad_width > 0) {
+ num_len = strlen(num_buf);
+ for (size_t i = num_len; i < pad_width; ++i)
+ printc(s, size, &off, '0');
+ pad_width = 0;
+ }
printstr(s, size, &off, num_buf + 2);
break;
case 's':