commit 19b7ebb558ccbfcbec3cb89f39b326d34dd0f331
author Youling Tang <tangyouling@loongson.cn> Tue Nov 22 22:08:47 2022 +0800
committer Copybara-Service <copybara-worker@google.com> Tue Nov 22 06:20:11 2022 -0800
tree cf6b0a539f9dd6efdeab6e6c534997b1358fc569
parent ce0c548f7fe3a09f3d9e76994fc29e3cf502a7a1

[Sanitizer] Fix the implementation of internal_fstat on LoongArch

If `pathname` is an empty string and the AT_EMPTY_PATH flag is specified in `flags`,
statx `pathname` argument is of type `const char *restrict`, so it should be `""`
instead of `0`.

Reviewed By: SixWeining, xen0n, xry111, lixing-star

Differential Revision: https://reviews.llvm.org/D138414

GitOrigin-RevId: dcefbce28109716803e8c83db1bd8d1bd0b6f369

lib/sanitizer_common/sanitizer_linux.cpp

diff --git a/lib/sanitizer_common/sanitizer_linux.cpp b/lib/sanitizer_common/sanitizer_linux.cpp
index f23ea9d..83d688a 100644
--- a/lib/sanitizer_common/sanitizer_linux.cpp
+++ b/lib/sanitizer_common/sanitizer_linux.cpp
@@ -440,7 +440,7 @@
   return res;
 #      elif SANITIZER_LINUX && defined(__loongarch__)
   struct statx bufx;
-  int res = internal_syscall(SYSCALL(statx), fd, 0, AT_EMPTY_PATH,
+  int res = internal_syscall(SYSCALL(statx), fd, "", AT_EMPTY_PATH,
                              STATX_BASIC_STATS, (uptr)&bufx);
   statx_to_stat(&bufx, (struct stat *)buf);
   return res;