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4b70d17bcf
Make TopLevelStmtDecl a DeclContext so that variables defined in statements are attached to the TopLevelDeclContext. This fixes redefinition errors from variables declared in if conditions and for-init statements. These must be local to the inner context (C++ 3.3.2p4), but they had generated definitions on global scope instead. This PR makes the TopLevelStmtDecl looking more like a FunctionDecl and that's fine because the FunctionDecl is very close in terms of semantics. Additionally, ActOnForStmt() requires a CompoundScope when processing a NullStmt body. --------- Co-authored-by: Vassil Vassilev <v.g.vassilev@gmail.com>
66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
// REQUIRES: host-supports-jit
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// UNSUPPORTED: system-aix
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// RUN: cat %s | clang-repl -Xcc -Xclang -Xcc -verify | FileCheck %s
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// RUN: %clang_cc1 -verify -fincremental-extensions -emit-llvm -o - %s \
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// RUN: | FileCheck --check-prefix=CODEGEN-CHECK %s
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// expected-no-diagnostics
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//CODEGEN-CHECK-COUNT-2: define internal void @__stmts__
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//CODEGEN-CHECK-NOT: define internal void @__stmts__
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extern "C" int printf(const char*,...);
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template <typename T> T call() { printf("called\n"); return T(); }
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call<int>();
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// CHECK: called
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int i = 1;
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++i;
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printf("i = %d\n", i);
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// CHECK: i = 2
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namespace Ns { void f(){ i++; } }
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Ns::f();
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void g() { ++i; }
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g();
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::g();
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printf("i = %d\n", i);
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// CHECK-NEXT: i = 5
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for (; i > 4; --i) printf("i = %d\n", i);
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// CHECK-NEXT: i = 5
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{++i;}
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for (; i > 4; --i) { printf("i = %d\n", i); };
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// CHECK-NEXT: i = 5
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int j = i; printf("j = %d\n", j);
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// CHECK-NEXT: j = 4
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{i = 0; printf("i = %d (global scope)\n", i);}
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// CHECK-NEXT: i = 0
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while (int i = 1) { printf("i = %d (while condition)\n", i--); break; }
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// CHECK-NEXT: i = 1
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if (int i = 2) printf("i = %d (if condition)\n", i);
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// CHECK-NEXT: i = 2
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switch (int i = 3) { default: printf("i = %d (switch condition)\n", i); }
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// CHECK-NEXT: i = 3
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for (int i = 4; i > 3; --i) printf("i = %d (for-init)\n", i);
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// CHECK-NEXT: i = 4
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for (const auto &i : "5") printf("i = %c (range-based for-init)\n", i);
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// CHECK-NEXT: i = 5
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int *aa=nullptr;
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if (auto *b=aa) *b += 1;
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while (auto *b=aa) ;
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for (auto *b=aa; b; *b+=1) ;
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