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infer_clone/infer/tests/codetoanalyze/cpp/shared/reference/nested_assignment.cpp.dot

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Add @generated comment to icfg.dot files Reviewed By: jvillard Differential Revision: D3358243 fbshipit-source-id: a47cc01
9 years ago
/* @generated */
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
digraph iCFG {
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_1" [label="1: Start normal\nFormals: \nLocals: ref_from_ref:int& ref_from_val:int& a:int \n DECLARE_LOCALS(&return,&ref_from_ref,&ref_from_val,&a); [line 10]\n " color=yellow style=filled]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_1" -> "normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_5" ;
"normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_2" [label="2: Exit normal \n " color=yellow style=filled]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_3" [label="3: DeclStmt \n n$0=*&ref_from_val:int& [line 13]\n *&ref_from_ref:int&=n$0 [line 13]\n " shape="box"]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_3" -> "normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_2" ;
"normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_4" [label="4: DeclStmt \n *&ref_from_val:int&=&a [line 12]\n " shape="box"]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_4" -> "normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_3" ;
"normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_5" [label="5: DeclStmt \n *&a:int=3 [line 11]\n " shape="box"]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_5" -> "normal#_Z6normalv.2d51c4d29ba6285893419f8e33941ea7_4" ;
"nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_1" [label="1: Start nested\nFormals: \nLocals: ref_from_ref:int& ref_from_val:int& a:int \n DECLARE_LOCALS(&return,&ref_from_ref,&ref_from_val,&a); [line 16]\n " color=yellow style=filled]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_1" -> "nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_5" ;
"nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_2" [label="2: Exit nested \n " color=yellow style=filled]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_3" [label="3: DeclStmt \n n$0=*&ref_from_val:int& [line 19]\n *n$0:int=6 [line 19]\n *&ref_from_ref:int&=n$0 [line 19]\n " shape="box"]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_3" -> "nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_2" ;
"nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_4" [label="4: DeclStmt \n *&a:int=4 [line 18]\n *&ref_from_val:int&=&a [line 18]\n " shape="box"]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_4" -> "nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_3" ;
"nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_5" [label="5: DeclStmt \n *&a:int=3 [line 17]\n " shape="box"]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_5" -> "nested#_Z6nestedv.59cd787871d16906f90134401e4ae8f0_4" ;
"crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_1" [label="1: Start crazy_nested\nFormals: \nLocals: ref_from_ref:int& ref_from_val:int& b:int a:int \n DECLARE_LOCALS(&return,&ref_from_ref,&ref_from_val,&b,&a); [line 22]\n " color=yellow style=filled]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_1" -> "crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_6" ;
"crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_2" [label="2: Exit crazy_nested \n " color=yellow style=filled]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_3" [label="3: DeclStmt \n n$0=*&ref_from_val:int& [line 29]\n *&b:int=5 [line 29]\n n$1=*&b:int [line 29]\n *n$0:int=n$1 [line 29]\n *&ref_from_ref:int&=n$0 [line 29]\n " shape="box"]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_3" -> "crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_2" ;
"crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_4" [label="4: DeclStmt \n *&b:int=4 [line 28]\n n$2=*&b:int [line 28]\n *&a:int=n$2 [line 28]\n *&ref_from_val:int&=&a [line 28]\n " shape="box"]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_4" -> "crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_3" ;
"crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_5" [label="5: DeclStmt \n n$3=*&a:int [line 24]\n *&b:int=n$3 [line 24]\n " shape="box"]
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_5" -> "crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_4" ;
"crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_6" [label="6: DeclStmt \n *&a:int=3 [line 23]\n " shape="box"]
Sort nodes when printing cfg to dot file Summary: Currently cfg nodes are written into dot files in whatever order they appear in a hash table. This seems unnecessarily sensitive, so this diff sorts the nodes. Reviewed By: dulmarod Differential Revision: D4232377 fbshipit-source-id: a907cc6
8 years ago
Populate mangled file only if it's not empty Summary: We were including hex of empty string if mangled name was not empty (so for all C++ functions). Instead, include hex of a source file only if it's not empty Reviewed By: mbouaziz Differential Revision: D4705388 fbshipit-source-id: 55b6587
8 years ago
"crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_6" -> "crazy_nested#_Z12crazy_nestedv.d6ad3d01c92985b2bddcffa10acc2452_5" ;
Handle assignment operations correctly Summary: public C++ assignment operation result is lvalue, while in C it was rvalue. This leads to different AST produced by clang for then same code! Use language information from clang (`-x` flag) to distinguish these cases. More specifically, let's look at following code: int r; int f = (r = 3); // type of (r = 3) expression: // C/objC -> int rvalue // C++/objC++ -> int lvalue Existing code did extra dereference because it was rvalue in C and there was no cast afterwards in C++ there will be extra LValueToRvalue cast when neccesary so we don't have to do extra dereference manually Reference: http://en.cppreference.com/w/c/language/value_category (search for 'assignment and compound assignment operators') NOTE: AST output doesn't change when something is hidden behind `extern "C"`, so we should use global language information Reviewed By: ddino Differential Revision: D2549866 fb-gh-sync-id: b193b11
9 years ago
}