Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/tools/clang-tidy/test/bugprone-suspicious-memset-usage.cpp b/tools/clang-tidy/test/bugprone-suspicious-memset-usage.cpp
new file mode 100644
index 0000000000..71fe7239a1
--- /dev/null
+++ b/tools/clang-tidy/test/bugprone-suspicious-memset-usage.cpp
@@ -0,0 +1,22 @@
+// https://clang.llvm.org/extra/clang-tidy/checks/bugprone-suspicious-memset-usage.html
+
+#include "structures.h"
+
+void test(int* ip, char* cp)
+{
+  // Case 1: Fill value is a character '0' instead of NUL '\0'.
+  memset(ip, '0', 1); // WARNING: suspicious for non-char pointers
+  memset(cp, '0', 1); // OK for char pointers
+
+  // Case 2: Fill value is truncated.
+  memset(ip, 0xabcd, 1); // WARNING: fill value gets truncated
+  memset(ip, 0x00cd, 1); // OK because value 0xcd is not truncated.
+  memset(ip, 0x00, 1);   // OK because value is not truncated.
+
+  // Case 3: Byte count is zero.
+  memset(ip, sizeof(int), 0); // WARNING: zero length, potentially swapped
+  memset(ip, sizeof(int), 1); // OK with non-zero length
+
+  // See clang bug https://bugs.llvm.org/show_bug.cgi?id=38098
+  memset(ip, 8, 0); // OK with zero length without sizeof
+}