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-rw-r--r--libc/bionic/__strncat_chk.cpp43
1 files changed, 20 insertions, 23 deletions
diff --git a/libc/bionic/__strncat_chk.cpp b/libc/bionic/__strncat_chk.cpp
index cdb3c80f1..21e5e39c7 100644
--- a/libc/bionic/__strncat_chk.cpp
+++ b/libc/bionic/__strncat_chk.cpp
@@ -41,33 +41,30 @@
* This strncat check is called if _FORTIFY_SOURCE is defined and
* greater than 0.
*/
-extern "C" char *__strncat_chk(
- char* __restrict dest,
- const char* __restrict src,
- size_t len, size_t dest_buf_size)
-{
- if (len == 0) {
- return dest;
- }
+extern "C" char* __strncat_chk(char* __restrict dest, const char* __restrict src,
+ size_t len, size_t dest_buf_size) {
+ if (len == 0) {
+ return dest;
+ }
- size_t dest_len = __strlen_chk(dest, dest_buf_size);
- char *d = dest + dest_len;
- dest_buf_size -= dest_len;
+ size_t dest_len = __strlen_chk(dest, dest_buf_size);
+ char *d = dest + dest_len;
+ dest_buf_size -= dest_len;
- while (*src != '\0') {
- *d++ = *src++;
- len--; dest_buf_size--;
+ while (*src != '\0') {
+ *d++ = *src++;
+ len--; dest_buf_size--;
- if (__predict_false(dest_buf_size == 0)) {
- __fortify_chk_fail("strncat prevented write past end of buffer",
- BIONIC_EVENT_STRNCAT_BUFFER_OVERFLOW);
- }
+ if (__predict_false(dest_buf_size == 0)) {
+ __fortify_chk_fail("strncat: prevented write past end of buffer",
+ BIONIC_EVENT_STRNCAT_BUFFER_OVERFLOW);
+ }
- if (len == 0) {
- break;
- }
+ if (len == 0) {
+ break;
}
+ }
- *d = '\0';
- return dest;
+ *d = '\0';
+ return dest;
}