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dd1d5488e4
The summary and very short discussion in D82122 summarizes whats happening here. In short, liveness talks about variables, or expressions, anything that has a value. Well, statements just simply don't have a one. Differential Revision: https://reviews.llvm.org/D82598
82 lines
2.1 KiB
Plaintext
82 lines
2.1 KiB
Plaintext
// RUN: %clang_analyze_cc1 -w -fblocks %s \
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// RUN: -analyzer-checker=debug.DumpLiveExprs \
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// RUN: 2>&1 | FileCheck %s
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@interface Item
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// ...
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@end
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@interface Collection
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// ...
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@end
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typedef void (^Blk)();
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struct RAII {
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Blk blk;
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public:
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RAII(Blk blk): blk(blk) {}
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// CHECK: [ B0 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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// CHECK-NEXT: [ B1 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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// CHECK-NEXT: [ B2 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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~RAII() { blk(); }
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// CHECK-NEXT: [ B0 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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// CHECK-NEXT: [ B1 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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// CHECK-NEXT: [ B2 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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};
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void foo(Collection *coll) {
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RAII raii(^{});
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for (Item *item in coll) {}
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}
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// CHECK-NEXT: [ B0 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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// CHECK-NEXT: [ B1 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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// CHECK-NEXT: [ B2 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-NEXT: ImplicitCastExpr {{.*}} 'Collection *' <LValueToRValue>
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// CHECK-NEXT: `-DeclRefExpr {{.*}} 'Collection *' lvalue ParmVar {{.*}} 'coll' 'Collection *'
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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// CHECK-NEXT: [ B3 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-NEXT: ImplicitCastExpr {{.*}} 'Collection *' <LValueToRValue>
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// CHECK-NEXT: `-DeclRefExpr {{.*}} 'Collection *' lvalue ParmVar {{.*}} 'coll' 'Collection *'
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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// CHECK-NEXT: [ B4 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-NEXT: ImplicitCastExpr {{.*}} 'Collection *' <LValueToRValue>
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// CHECK-NEXT: `-DeclRefExpr {{.*}} 'Collection *' lvalue ParmVar {{.*}} 'coll' 'Collection *'
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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// CHECK-NEXT: [ B5 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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// CHECK-NEXT: [ B0 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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// CHECK-NEXT: [ B1 (live expressions at block exit) ]
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// CHECK-EMPTY:
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// CHECK-EMPTY:
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