[analyzer] Respect statement-specific data in CloneDetection.
So far the CloneDetector only respected the kind of each statement when
searching for clones. This patch refines the way the CloneDetector collects data
from each statement by providing methods for each statement kind,
that will read the kind-specific attributes.
For example, statements 'a < b' and 'a > b' are no longer considered to be
clones, because they are different in operation code, which is an attribute
specific to the BinaryOperator statement kind.
Patch by Raphael Isemann!
Differential Revision: https://reviews.llvm.org/D22514
llvm-svn: 277449
diff --git a/clang/test/Analysis/copypaste/delete.cpp b/clang/test/Analysis/copypaste/delete.cpp
new file mode 100644
index 0000000..dc42c9c
--- /dev/null
+++ b/clang/test/Analysis/copypaste/delete.cpp
@@ -0,0 +1,29 @@
+// RUN: %clang_cc1 -analyze -std=c++1z -analyzer-checker=alpha.clone.CloneChecker -verify %s
+
+// expected-no-diagnostics
+
+bool foo1(int x, int* a) {
+ if (x > 0)
+ return false;
+ else if (x < 0)
+ delete a;
+ return true;
+}
+
+// Explicit global delete
+bool foo2(int x, int* a) {
+ if (x > 0)
+ return false;
+ else if (x < 0)
+ ::delete a;
+ return true;
+}
+
+// Array delete
+bool foo3(int x, int* a) {
+ if (x > 0)
+ return false;
+ else if (x < 0)
+ delete[] a;
+ return true;
+}