derek.holloway
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89 lines
3.2 KiB
Plaintext
89 lines
3.2 KiB
Plaintext
// RUN: %clang_analyze_cc1 -triple x86_64-apple-darwin10 -analyzer-checker=core -fblocks -verify -x objective-c++ %s
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// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,debug.DumpCFG -fblocks -analyzer-config cfg-rich-constructors=false %s > %t 2>&1
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// RUN: FileCheck --input-file=%t -check-prefixes=CHECK,WARNINGS %s
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// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,debug.DumpCFG -fblocks -analyzer-config cfg-rich-constructors=true %s > %t 2>&1
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// RUN: FileCheck --input-file=%t -check-prefixes=CHECK,ANALYZER %s
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// This file tests how we construct two different flavors of the Clang CFG -
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// the CFG used by the Sema analysis-based warnings and the CFG used by the
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// static analyzer. The difference in the behavior is checked via FileCheck
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// prefixes (WARNINGS and ANALYZER respectively). When introducing new analyzer
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// flags, no new run lines should be added - just these flags would go to the
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// respective line depending on where is it turned on and where is it turned
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// off. Feel free to add tests that test only one of the CFG flavors if you're
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// not sure how the other flavor is supposed to work in your case.
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// expected-no-diagnostics
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void testBlockWithoutCopyExpression(int i) {
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// Captures i, with no copy expression.
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(void)(^void() {
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(void)i;
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});
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}
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// CHECK-LABEL:void testBlockWithoutCopyExpression(int i)
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// CHECK-NEXT: [B2 (ENTRY)]
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// CHECK-NEXT: Succs (1): B1
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// CHECK: [B1]
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// CHECK-NEXT: 1: ^{ }
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// CHECK-NEXT: 2: (void)([B1.1]) (CStyleCastExpr, ToVoid, void)
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// CHECK-NEXT: Preds (1): B2
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// CHECK-NEXT: Succs (1): B0
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// CHECK: [B0 (EXIT)]
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// CHECK-NEXT: Preds (1): B1
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struct StructWithCopyConstructor {
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StructWithCopyConstructor(int i);
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StructWithCopyConstructor(const StructWithCopyConstructor &s);
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};
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void testBlockWithCopyExpression(StructWithCopyConstructor s) {
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// Captures s, with a copy expression calling the copy constructor for StructWithCopyConstructor.
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(void)(^void() {
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(void)s;
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});
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}
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// CHECK-LABEL:void testBlockWithCopyExpression(StructWithCopyConstructor s)
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// CHECK-NEXT: [B2 (ENTRY)]
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// CHECK-NEXT: Succs (1): B1
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// CHECK: [B1]
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// CHECK-NEXT: 1: s
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// CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, NoOp, const StructWithCopyConstructor)
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// CHECK-NEXT: 3: [B1.2] (CXXConstructExpr, const StructWithCopyConstructor)
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// CHECK-NEXT: 4: ^{ }
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// CHECK-NEXT: 5: (void)([B1.4]) (CStyleCastExpr, ToVoid, void)
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// CHECK-NEXT: Preds (1): B2
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// CHECK-NEXT: Succs (1): B0
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// CHECK: [B0 (EXIT)]
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// CHECK-NEXT: Preds (1): B1
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void testBlockWithCaptureByReference() {
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__block StructWithCopyConstructor s(5);
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// Captures s by reference, so no copy expression.
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(void)(^void() {
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(void)s;
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});
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}
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// CHECK-LABEL:void testBlockWithCaptureByReference()
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// CHECK-NEXT: [B2 (ENTRY)]
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// CHECK-NEXT: Succs (1): B1
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// CHECK: [B1]
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// CHECK-NEXT: 1: 5
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// WARNINGS-NEXT: 2: [B1.1] (CXXConstructExpr, StructWithCopyConstructor)
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// ANALYZER-NEXT: 2: [B1.1] (CXXConstructExpr, [B1.3], StructWithCopyConstructor)
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// CHECK-NEXT: 3: __attribute__((blocks("byref"))) StructWithCopyConstructor s(5);
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// CHECK-NEXT: 4: ^{ }
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// CHECK-NEXT: 5: (void)([B1.4]) (CStyleCastExpr, ToVoid, void)
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// CHECK-NEXT: Preds (1): B2
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// CHECK-NEXT: Succs (1): B0
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// CHECK: [B0 (EXIT)]
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// CHECK-NEXT: Preds (1): B1
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