[analyzer] Add basic support for pluggable checkers.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137802 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/examples/analyzer-plugin/CMakeLists.txt b/examples/analyzer-plugin/CMakeLists.txt
new file mode 100644
index 0000000..8654226
--- /dev/null
+++ b/examples/analyzer-plugin/CMakeLists.txt
@@ -0,0 +1,14 @@
+set(MODULE TRUE)
+
+set( LLVM_USED_LIBS
+ clangStaticAnalyzerCore
+ )
+
+set( LLVM_LINK_COMPONENTS support mc)
+
+add_clang_library(SampleAnalyzerPlugin SampleAnalyzerPlugin)
+
+set_target_properties(SampleAnalyzerPlugin
+ PROPERTIES
+ LINKER_LANGUAGE CXX
+ PREFIX "")
diff --git a/examples/analyzer-plugin/MainCallChecker.cpp b/examples/analyzer-plugin/MainCallChecker.cpp
new file mode 100644
index 0000000..bf75389
--- /dev/null
+++ b/examples/analyzer-plugin/MainCallChecker.cpp
@@ -0,0 +1,52 @@
+#include "clang/StaticAnalyzer/Core/Checker.h"
+#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
+#include "clang/StaticAnalyzer/Core/CheckerRegistry.h"
+#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h"
+
+using namespace clang;
+using namespace ento;
+
+namespace {
+class MainCallChecker : public Checker < check::PreStmt<CallExpr> > {
+ mutable llvm::OwningPtr<BugType> BT;
+
+public:
+ void checkPreStmt(const CallExpr *CE, CheckerContext &C) const;
+};
+} // end anonymous namespace
+
+void MainCallChecker::checkPreStmt(const CallExpr *CE, CheckerContext &C) const {
+ const ProgramState *state = C.getState();
+ const Expr *Callee = CE->getCallee();
+ const FunctionDecl *FD = state->getSVal(Callee).getAsFunctionDecl();
+
+ if (!FD)
+ return;
+
+ // Get the name of the callee.
+ IdentifierInfo *II = FD->getIdentifier();
+ if (!II) // if no identifier, not a simple C function
+ return;
+
+ if (II->isStr("main")) {
+ ExplodedNode *N = C.generateSink();
+ if (!N)
+ return;
+
+ if (!BT)
+ BT.reset(new BuiltinBug("call to main"));
+
+ RangedBugReport *report = new RangedBugReport(*BT, BT->getName(), N);
+ report->addRange(Callee->getSourceRange());
+ C.EmitReport(report);
+ }
+}
+
+// Register plugin!
+extern "C"
+void clang_registerCheckers (CheckerRegistry ®istry) {
+ registry.addChecker<MainCallChecker>("example.MainCallChecker", "Disallows calls to functions called main");
+}
+
+extern "C"
+const char clang_analyzerAPIVersionString[] = CLANG_ANALYZER_API_VERSION_STRING;
diff --git a/examples/analyzer-plugin/Makefile b/examples/analyzer-plugin/Makefile
new file mode 100644
index 0000000..5537ee0
--- /dev/null
+++ b/examples/analyzer-plugin/Makefile
@@ -0,0 +1,20 @@
+##===- examples/analyzer-plugin/Makefile -------------------*- Makefile -*-===##
+#
+# The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+CLANG_LEVEL := ../..
+LIBRARYNAME = SampleAnalyzerPlugin
+
+LINK_LIBS_IN_SHARED = 0
+SHARED_LIBRARY = 1
+
+include $(CLANG_LEVEL)/Makefile
+
+ifeq ($(OS),Darwin)
+ LDFLAGS=-Wl,-undefined,dynamic_lookup
+endif