| 1 | // RUN: %clang_analyze_cc1 -triple x86_64-apple-darwin10 -analyzer-checker=core -fblocks -analyzer-opt-analyze-nested-blocks -verify -x objective-c++ %s |
|---|
| 2 | // RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,debug.DumpCFG -fblocks -analyzer-opt-analyze-nested-blocks -analyzer-config cfg-rich-constructors=false %s > %t 2>&1 |
|---|
| 3 | // RUN: FileCheck --input-file=%t -check-prefixes=CHECK,WARNINGS %s |
|---|
| 4 | // RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,debug.DumpCFG -fblocks -analyzer-opt-analyze-nested-blocks -analyzer-config cfg-rich-constructors=true %s > %t 2>&1 |
|---|
| 5 | // RUN: FileCheck --input-file=%t -check-prefixes=CHECK,ANALYZER %s |
|---|
| 6 | |
|---|
| 7 | // This file tests how we construct two different flavors of the Clang CFG - |
|---|
| 8 | // the CFG used by the Sema analysis-based warnings and the CFG used by the |
|---|
| 9 | // static analyzer. The difference in the behavior is checked via FileCheck |
|---|
| 10 | // prefixes (WARNINGS and ANALYZER respectively). When introducing new analyzer |
|---|
| 11 | // flags, no new run lines should be added - just these flags would go to the |
|---|
| 12 | // respective line depending on where is it turned on and where is it turned |
|---|
| 13 | // off. Feel free to add tests that test only one of the CFG flavors if you're |
|---|
| 14 | // not sure how the other flavor is supposed to work in your case. |
|---|
| 15 | |
|---|
| 16 | // expected-no-diagnostics |
|---|
| 17 | |
|---|
| 18 | void testBlockWithoutCopyExpression(int i) { |
|---|
| 19 | // Captures i, with no copy expression. |
|---|
| 20 | (void)(^void() { |
|---|
| 21 | (void)i; |
|---|
| 22 | }); |
|---|
| 23 | } |
|---|
| 24 | |
|---|
| 25 | // CHECK-LABEL:void testBlockWithoutCopyExpression(int i) |
|---|
| 26 | // CHECK-NEXT: [B2 (ENTRY)] |
|---|
| 27 | // CHECK-NEXT: Succs (1): B1 |
|---|
| 28 | |
|---|
| 29 | // CHECK: [B1] |
|---|
| 30 | // CHECK-NEXT: 1: ^{ } |
|---|
| 31 | // CHECK-NEXT: 2: (void)([B1.1]) (CStyleCastExpr, ToVoid, void) |
|---|
| 32 | // CHECK-NEXT: Preds (1): B2 |
|---|
| 33 | // CHECK-NEXT: Succs (1): B0 |
|---|
| 34 | |
|---|
| 35 | // CHECK: [B0 (EXIT)] |
|---|
| 36 | // CHECK-NEXT: Preds (1): B1 |
|---|
| 37 | |
|---|
| 38 | struct StructWithCopyConstructor { |
|---|
| 39 | StructWithCopyConstructor(int i); |
|---|
| 40 | StructWithCopyConstructor(const StructWithCopyConstructor &s); |
|---|
| 41 | }; |
|---|
| 42 | void testBlockWithCopyExpression(StructWithCopyConstructor s) { |
|---|
| 43 | // Captures s, with a copy expression calling the copy constructor for StructWithCopyConstructor. |
|---|
| 44 | (void)(^void() { |
|---|
| 45 | (void)s; |
|---|
| 46 | }); |
|---|
| 47 | } |
|---|
| 48 | |
|---|
| 49 | // CHECK-LABEL:void testBlockWithCopyExpression(StructWithCopyConstructor s) |
|---|
| 50 | // CHECK-NEXT: [B2 (ENTRY)] |
|---|
| 51 | // CHECK-NEXT: Succs (1): B1 |
|---|
| 52 | |
|---|
| 53 | // CHECK: [B1] |
|---|
| 54 | // CHECK-NEXT: 1: s |
|---|
| 55 | // CHECK-NEXT: 2: [B1.1] (CXXConstructExpr, const struct StructWithCopyConstructor) |
|---|
| 56 | // CHECK-NEXT: 3: ^{ } |
|---|
| 57 | // CHECK-NEXT: 4: (void)([B1.3]) (CStyleCastExpr, ToVoid, void) |
|---|
| 58 | // CHECK-NEXT: Preds (1): B2 |
|---|
| 59 | // CHECK-NEXT: Succs (1): B0 |
|---|
| 60 | |
|---|
| 61 | // CHECK: [B0 (EXIT)] |
|---|
| 62 | // CHECK-NEXT: Preds (1): B1 |
|---|
| 63 | |
|---|
| 64 | void testBlockWithCaptureByReference() { |
|---|
| 65 | __block StructWithCopyConstructor s(5); |
|---|
| 66 | // Captures s by reference, so no copy expression. |
|---|
| 67 | (void)(^void() { |
|---|
| 68 | (void)s; |
|---|
| 69 | }); |
|---|
| 70 | } |
|---|
| 71 | |
|---|
| 72 | // CHECK-LABEL:void testBlockWithCaptureByReference() |
|---|
| 73 | // CHECK-NEXT: [B2 (ENTRY)] |
|---|
| 74 | // CHECK-NEXT: Succs (1): B1 |
|---|
| 75 | |
|---|
| 76 | // CHECK: [B1] |
|---|
| 77 | // CHECK-NEXT: 1: 5 |
|---|
| 78 | // WARNINGS-NEXT: 2: [B1.1] (CXXConstructExpr, struct StructWithCopyConstructor) |
|---|
| 79 | // ANALYZER-NEXT: 2: [B1.1] (CXXConstructExpr, [B1.3], struct StructWithCopyConstructor) |
|---|
| 80 | // CHECK-NEXT: 3: StructWithCopyConstructor s(5) __attribute__((blocks("byref"))); |
|---|
| 81 | // CHECK-NEXT: 4: ^{ } |
|---|
| 82 | // CHECK-NEXT: 5: (void)([B1.4]) (CStyleCastExpr, ToVoid, void) |
|---|
| 83 | // CHECK-NEXT: Preds (1): B2 |
|---|
| 84 | // CHECK-NEXT: Succs (1): B0 |
|---|
| 85 | |
|---|
| 86 | // CHECK: [B0 (EXIT)] |
|---|
| 87 | // CHECK-NEXT: Preds (1): B1 |
|---|
| 88 | |
|---|