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1a27d63a88
If an error happens which is related to a container the Container Modeling checker adds note tags to all the container operations along the bug path. This may be disturbing if there are other containers beside the one which is affected by the bug. This patch restricts the note tags to only the affected container and adjust the debug checkers to be able to test this change. Differential Revision: https://reviews.llvm.org/D75514
266 lines
10 KiB
C++
266 lines
10 KiB
C++
// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,cplusplus,debug.DebugIteratorModeling,debug.ExprInspection -analyzer-config aggressive-binary-operation-simplification=true -analyzer-config c++-container-inlining=false %s -analyzer-output=text -verify
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// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,cplusplus,debug.DebugIteratorModeling,debug.ExprInspection -analyzer-config aggressive-binary-operation-simplification=true -analyzer-config c++-container-inlining=true -DINLINE=1 %s -analyzer-output=text -verify
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// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,cplusplus,alpha.cplusplus.IteratorModeling,debug.ExprInspection -analyzer-config aggressive-binary-operation-simplification=true %s 2>&1 | FileCheck %s
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#include "Inputs/system-header-simulator-cxx.h"
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template <typename Container>
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long clang_analyzer_container_begin(const Container&);
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template <typename Container>
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long clang_analyzer_container_end(const Container&);
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void clang_analyzer_denote(long, const char*);
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void clang_analyzer_express(long);
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void clang_analyzer_eval(bool);
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void clang_analyzer_warnIfReached();
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void begin(const std::vector<int> &V) {
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V.begin();
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clang_analyzer_denote(clang_analyzer_container_begin(V), "$V.begin()");
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clang_analyzer_express(clang_analyzer_container_begin(V)); // expected-warning{{$V.begin()}}
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// expected-note@-1{{$V.begin()}}
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}
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void end(const std::vector<int> &V) {
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V.end();
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clang_analyzer_denote(clang_analyzer_container_end(V), "$V.end()");
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clang_analyzer_express(clang_analyzer_container_end(V)); // expected-warning{{$V.end()}}
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// expected-note@-1{{$V.end()}}
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}
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////////////////////////////////////////////////////////////////////////////////
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///
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/// C O N T A I N E R A S S I G N M E N T S
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///
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////////////////////////////////////////////////////////////////////////////////
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// Move
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void move_assignment(std::vector<int> &V1, std::vector<int> &V2) {
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V1.cbegin();
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V1.cend();
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V2.cbegin();
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V2.cend();
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long B1 = clang_analyzer_container_begin(V1);
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long E1 = clang_analyzer_container_end(V1);
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long B2 = clang_analyzer_container_begin(V2);
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long E2 = clang_analyzer_container_end(V2);
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V1 = std::move(V2);
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clang_analyzer_eval(clang_analyzer_container_begin(V1) == B2); // expected-warning{{TRUE}}
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// expected-note@-1{{TRUE}}
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clang_analyzer_eval(clang_analyzer_container_end(V2) == E2); // expected-warning{{TRUE}}
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// expected-note@-1{{TRUE}}
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}
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////////////////////////////////////////////////////////////////////////////////
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///
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/// C O N T A I N E R M O D I F I E R S
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///
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////////////////////////////////////////////////////////////////////////////////
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/// push_back()
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///
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/// Design decision: extends containers to the ->BACK-> (i.e. the
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/// past-the-end position of the container is incremented).
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void clang_analyzer_dump(void*);
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void push_back(std::vector<int> &V, int n) {
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V.cbegin();
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V.cend();
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clang_analyzer_denote(clang_analyzer_container_begin(V), "$V.begin()");
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clang_analyzer_denote(clang_analyzer_container_end(V), "$V.end()");
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V.push_back(n); // expected-note 2{{Container 'V' extended to the back by 1 position}}
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clang_analyzer_express(clang_analyzer_container_begin(V)); // expected-warning{{$V.begin()}}
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// expected-note@-1{{$V.begin()}}
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clang_analyzer_express(clang_analyzer_container_end(V)); // expected-warning{{$V.end() + 1}}
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// expected-note@-1{{$V.end() + 1}}
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}
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/// emplace_back()
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///
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/// Design decision: extends containers to the ->BACK-> (i.e. the
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/// past-the-end position of the container is incremented).
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void emplace_back(std::vector<int> &V, int n) {
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V.cbegin();
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V.cend();
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clang_analyzer_denote(clang_analyzer_container_begin(V), "$V.begin()");
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clang_analyzer_denote(clang_analyzer_container_end(V), "$V.end()");
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V.emplace_back(n); // expected-note 2{{Container 'V' extended to the back by 1 position}}
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clang_analyzer_express(clang_analyzer_container_begin(V)); // expected-warning{{$V.begin()}}
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// expected-note@-1{{$V.begin()}}
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clang_analyzer_express(clang_analyzer_container_end(V)); // expected-warning{{$V.end() + 1}}
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// expected-note@-1{{$V.end() + 1}}
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}
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/// pop_back()
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///
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/// Design decision: shrinks containers to the <-FRONT<- (i.e. the
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/// past-the-end position of the container is decremented).
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void pop_back(std::vector<int> &V, int n) {
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V.cbegin();
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V.cend();
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clang_analyzer_denote(clang_analyzer_container_begin(V), "$V.begin()");
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clang_analyzer_denote(clang_analyzer_container_end(V), "$V.end()");
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V.pop_back(); // expected-note 2{{Container 'V' shrank from the back by 1 position}}
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clang_analyzer_express(clang_analyzer_container_begin(V)); // expected-warning{{$V.begin()}}
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// expected-note@-1{{$V.begin()}}
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clang_analyzer_express(clang_analyzer_container_end(V)); // expected-warning{{$V.end() - 1}}
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// expected-note@-1{{$V.end() - 1}}
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}
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/// push_front()
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///
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/// Design decision: extends containers to the <-FRONT<- (i.e. the first
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/// position of the container is decremented).
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void push_front(std::list<int> &L, int n) {
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L.cbegin();
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L.cend();
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clang_analyzer_denote(clang_analyzer_container_begin(L), "$L.begin()");
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clang_analyzer_denote(clang_analyzer_container_end(L), "$L.end()");
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L.push_front(n); // expected-note 2{{Container 'L' extended to the front by 1 position}}
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clang_analyzer_express(clang_analyzer_container_begin(L)); // expected-warning{{$L.begin() - 1}}
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// expected-note@-1{{$L.begin() - 1}}
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clang_analyzer_express(clang_analyzer_container_end(L)); // expected-warning{{$L.end()}}
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// expected-note@-1{{$L.end()}}
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}
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/// emplace_front()
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///
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/// Design decision: extends containers to the <-FRONT<- (i.e. the first
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/// position of the container is decremented).
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void emplace_front(std::list<int> &L, int n) {
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L.cbegin();
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L.cend();
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clang_analyzer_denote(clang_analyzer_container_begin(L), "$L.begin()");
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clang_analyzer_denote(clang_analyzer_container_end(L), "$L.end()");
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L.emplace_front(n); // expected-note 2{{Container 'L' extended to the front by 1 position}}
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clang_analyzer_express(clang_analyzer_container_begin(L)); // expected-warning{{$L.begin() - 1}}
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// expected-note@-1{{$L.begin() - 1}}
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clang_analyzer_express(clang_analyzer_container_end(L)); // expected-warning{{$L.end()}}
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// expected-note@-1{{$L.end()}}
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}
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/// pop_front()
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///
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/// Design decision: shrinks containers to the ->BACK-> (i.e. the first
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/// position of the container is incremented).
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void pop_front(std::list<int> &L, int n) {
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L.cbegin();
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L.cend();
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clang_analyzer_denote(clang_analyzer_container_begin(L), "$L.begin()");
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clang_analyzer_denote(clang_analyzer_container_end(L), "$L.end()");
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L.pop_front(); // expected-note 2{{Container 'L' shrank from the front by 1 position}}
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clang_analyzer_express(clang_analyzer_container_begin(L)); // expected-warning{{$L.begin() + 1}}
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// expected-note@-1{{$L.begin() + 1}}
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clang_analyzer_express(clang_analyzer_container_end(L)); // expected-warning{{$L.end()}}
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// expected-note@-1{{$L.end()}}
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}
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////////////////////////////////////////////////////////////////////////////////
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///
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/// O T H E R T E S T S
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///
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////////////////////////////////////////////////////////////////////////////////
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/// Track local variable
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void push_back() {
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std::vector<int> V;
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V.end();
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clang_analyzer_denote(clang_analyzer_container_end(V), "$V.end()");
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V.push_back(1); // expected-note{{Container 'V' extended to the back by 1 position}}
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clang_analyzer_express(clang_analyzer_container_end(V)); // expected-warning{{$V.end() + 1}}
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// expected-note@-1{{$V.end() + 1}}
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}
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/// Track the right container only
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void push_back1(std::vector<int> &V1, std::vector<int> &V2, int n) {
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V1.cbegin();
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V1.cend();
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V2.cbegin();
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V2.cend();
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clang_analyzer_denote(clang_analyzer_container_begin(V1), "$V1.begin()");
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V2.push_back(n); // no-note
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clang_analyzer_express(clang_analyzer_container_begin(V1)); // expected-warning{{$V1.begin()}}
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// expected-note@-1{{$V1.begin()}}
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}
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void push_back2(std::vector<int> &V1, std::vector<int> &V2, int n) {
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V1.cbegin();
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V1.cend();
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V2.cbegin();
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V2.cend();
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clang_analyzer_denote(clang_analyzer_container_begin(V1), "$V1.begin()");
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clang_analyzer_denote(clang_analyzer_container_begin(V2), "$V2.begin()");
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V1.push_back(n); // expected-note{{Container 'V1' extended to the back by 1 position}}
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// Only once!
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clang_analyzer_express(clang_analyzer_container_begin(V1)); // expected-warning{{$V1.begin()}}
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// expected-note@-1{{$V1.begin()}}
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clang_analyzer_express(clang_analyzer_container_begin(V2)); // expected-warning{{$V2.begin()}}
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// expected-note@-1{{$V2.begin()}}
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}
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/// Print Container Data as Part of the Program State
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void clang_analyzer_printState();
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void print_state(std::vector<int> &V) {
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V.cbegin();
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clang_analyzer_printState();
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// CHECK: "checker_messages": [
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// CHECK-NEXT: { "checker": "alpha.cplusplus.ContainerModeling", "messages": [
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// CHECK-NEXT: "Container Data :",
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// CHECK-NEXT: "SymRegion{reg_$[[#]]<std::vector<int> & V>} : [ conj_$[[#]]{long, LC[[#]], S[[#]], #[[#]]} .. <Unknown> ]"
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// CHECK-NEXT: ]}
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V.cend();
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clang_analyzer_printState();
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// CHECK: "checker_messages": [
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// CHECK-NEXT: { "checker": "alpha.cplusplus.ContainerModeling", "messages": [
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// CHECK-NEXT: "Container Data :",
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// CHECK-NEXT: "SymRegion{reg_$[[#]]<std::vector<int> & V>} : [ conj_$[[#]]{long, LC[[#]], S[[#]], #[[#]]} .. conj_$[[#]]{long, LC[[#]], S[[#]], #[[#]]} ]"
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// CHECK-NEXT: ]}
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}
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