r248803 - Thread Safety Analysis: fix before/after checks so that they work on global

[DeLesley Hutchins via cfe-commits]

Author: delesley
Date: Tue Sep 29 10:25:51 2015
New Revision: 248803

URL: http://llvm.org/viewvc/llvm-project?rev=248803&view=rev
Log:
Thread Safety Analysis:  fix before/after checks so that they work on global
variables as well member variables.

Modified:
    cfe/trunk/include/clang/Analysis/Analyses/ThreadSafetyCommon.h
    cfe/trunk/lib/Analysis/ThreadSafetyCommon.cpp
    cfe/trunk/test/Sema/warn-thread-safety-analysis.c
    cfe/trunk/test/SemaCXX/warn-thread-safety-analysis.cpp

Modified: cfe/trunk/include/clang/Analysis/Analyses/ThreadSafetyCommon.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Analysis/Analyses/ThreadSafetyCommon.h?rev=248803&r1=248802&r2=248803&view=diff
==============================================================================
--- cfe/trunk/include/clang/Analysis/Analyses/ThreadSafetyCommon.h (original)
+++ cfe/trunk/include/clang/Analysis/Analyses/ThreadSafetyCommon.h Tue Sep 29 10:25:51 2015
@@ -291,6 +291,8 @@ public:
       return nullptr;
     if (auto *P = dyn_cast<til::Project>(CapExpr))
       return P->clangDecl();
+    if (auto *P = dyn_cast<til::LiteralPtr>(CapExpr))
+      return P->clangDecl();
     return nullptr;
   }
 

Modified: cfe/trunk/lib/Analysis/ThreadSafetyCommon.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Analysis/ThreadSafetyCommon.cpp?rev=248803&r1=248802&r2=248803&view=diff
==============================================================================
--- cfe/trunk/lib/Analysis/ThreadSafetyCommon.cpp (original)
+++ cfe/trunk/lib/Analysis/ThreadSafetyCommon.cpp Tue Sep 29 10:25:51 2015
@@ -290,7 +290,7 @@ til::SExpr *SExprBuilder::translateDeclR
     VD = FD->getParamDecl(I);
   }
 
-  // For non-local variables, treat it as a referenced to a named object.
+  // For non-local variables, treat it as a reference to a named object.
   return new (Arena) til::LiteralPtr(VD);
 }
 

Modified: cfe/trunk/test/Sema/warn-thread-safety-analysis.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Sema/warn-thread-safety-analysis.c?rev=248803&r1=248802&r2=248803&view=diff
==============================================================================
--- cfe/trunk/test/Sema/warn-thread-safety-analysis.c (original)
+++ cfe/trunk/test/Sema/warn-thread-safety-analysis.c Tue Sep 29 10:25:51 2015
@@ -81,7 +81,8 @@ int main() {
   mutex_shared_lock(&mu2);
   Foo_fun1(1);
 
-  mutex_shared_lock(&mu1); // expected-warning{{acquiring mutex 'mu1' that is already held}}
+  mutex_shared_lock(&mu1); // expected-warning{{acquiring mutex 'mu1' that is already held}} \
+                              expected-warning{{mutex 'mu1' must be acquired before 'mu2'}}
   mutex_unlock(&mu1);
   mutex_unlock(&mu2);
   mutex_shared_lock(&mu1);

Modified: cfe/trunk/test/SemaCXX/warn-thread-safety-analysis.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaCXX/warn-thread-safety-analysis.cpp?rev=248803&r1=248802&r2=248803&view=diff
==============================================================================
--- cfe/trunk/test/SemaCXX/warn-thread-safety-analysis.cpp (original)
+++ cfe/trunk/test/SemaCXX/warn-thread-safety-analysis.cpp Tue Sep 29 10:25:51 2015
@@ -5145,4 +5145,17 @@ void test() {
 }  // end namespace TestReferenceNoThreadSafetyAnalysis
 
 
+namespace GlobalAcquiredBeforeAfterTest {
+
+Mutex mu1;
+Mutex mu2 ACQUIRED_AFTER(mu1);
+
+void test3() {
+  mu2.Lock();
+  mu1.Lock();  // expected-warning {{mutex 'mu1' must be acquired before 'mu2'}}
+  mu1.Unlock();
+  mu2.Unlock();
+}
+
+}  // end namespace  GlobalAcquiredBeforeAfterTest