infer_clone/infer/tests/codetoanalyze/objc/frontend/vardecl/last_af.m.dot

/* @generated */
digraph cfg {
"main.fad58de7366495db4650cfefac2fcd61_1" [label="1: Start main\nFormals: \nLocals:  b:int a:int \n  " color=yellow style=filled]
	

	 "main.fad58de7366495db4650cfefac2fcd61_1" -> "main.fad58de7366495db4650cfefac2fcd61_4" ;
"main.fad58de7366495db4650cfefac2fcd61_2" [label="2: Exit main \n  " color=yellow style=filled]
	

"main.fad58de7366495db4650cfefac2fcd61_3" [label="3:  DeclStmt \n   n$1=_fun___variable_initialization(&b:int) [line 8, column 14]\n  n$0=*&a:int [line 8, column 29]\n  *&b:int=(n$0 + 2) [line 8, column 14]\n  NULLIFY(&b); [line 8, column 14]\n  NULLIFY(&a); [line 8, column 14]\n  EXIT_SCOPE(n$0,n$1,b,a); [line 8, column 14]\n  APPLY_ABSTRACTION; [line 8, column 14]\n " shape="box"]
	

	 "main.fad58de7366495db4650cfefac2fcd61_3" -> "main.fad58de7366495db4650cfefac2fcd61_2" ;
"main.fad58de7366495db4650cfefac2fcd61_4" [label="4:  DeclStmt \n   n$2=_fun___variable_initialization(&a:int) [line 8, column 14]\n  *&a:int=0 [line 8, column 14]\n  EXIT_SCOPE(n$2); [line 8, column 14]\n " shape="box"]
	

	 "main.fad58de7366495db4650cfefac2fcd61_4" -> "main.fad58de7366495db4650cfefac2fcd61_3" ;
}
Add @generated comment to icfg.dot files Reviewed By: jvillard Differential Revision: D3358243 fbshipit-source-id: a47cc01 9 years ago			`/* @generated */`
[cfg] rename iCFG to cfg in dotty files Summary: Not sure what an "iCFG" is but the dotty is only about CFGs anyway. Diff obtained by mass-`sed`. Reviewed By: sblackshear Differential Revision: D6324280 fbshipit-source-id: b7603bb 7 years ago			`digraph cfg {`
Get rid of Declare_locals Reviewed By: jeremydubreil Differential Revision: D9234331 fbshipit-source-id: 70443eabe 6 years ago			`"main.fad58de7366495db4650cfefac2fcd61_1" [label="1: Start main\nFormals: \nLocals: b:int a:int \n " color=yellow style=filled]`
initial synchronization 10 years ago

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			`"main.fad58de7366495db4650cfefac2fcd61_1" -> "main.fad58de7366495db4650cfefac2fcd61_4" ;`
			`"main.fad58de7366495db4650cfefac2fcd61_2" [label="2: Exit main \n " color=yellow style=filled]`
initial synchronization 10 years ago

[preanalysis] do not delay killing variables taken by reference Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52 6 years ago			`"main.fad58de7366495db4650cfefac2fcd61_3" [label="3: DeclStmt \n n$1=_fun___variable_initialization(&b:int) [line 8, column 14]\n n$0=&a:int [line 8, column 29]\n &b:int=(n$0 + 2) [line 8, column 14]\n NULLIFY(&b); [line 8, column 14]\n NULLIFY(&a); [line 8, column 14]\n EXIT_SCOPE(n$0,n$1,b,a); [line 8, column 14]\n APPLY_ABSTRACTION; [line 8, column 14]\n " shape="box"]`
initial synchronization 10 years ago

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			`"main.fad58de7366495db4650cfefac2fcd61_3" -> "main.fad58de7366495db4650cfefac2fcd61_2" ;`
[preanalysis] do not delay killing variables taken by reference Summary: Before, the liveness pre-analysis would place extra instructions in the CFG for either: 1. marking an `Ident.t` as dead, or 2. marking a `Pvar.t` as `= 0` But we have no way of marking pvars dead without setting them to 0. This is bad because setting pvars to 0 is not possible everywhere they are dead. Indeed, we only do it when we haven't seen their address being taken anyway. This prevents the following situation, recorded in our tests: ``` int address_taken() { int** x; int* y; int i = 7; y = &i; x = &y; // if we don't reason about taken addresses while adding nullify instructions, // we'll add // `nullify(y)` here and report a false NPE on the next line return **x; } ``` So we want to mark pvars as dead without nullifying them. This diff extends the `Remove_temps` SIL instruction to accept pvars as well, and so renames it to `ExitScope`. Reviewed By: da319 Differential Revision: D13102953 fbshipit-source-id: aa7f03a52 6 years ago			`"main.fad58de7366495db4650cfefac2fcd61_4" [label="4: DeclStmt \n n$2=_fun___variable_initialization(&a:int) [line 8, column 14]\n *&a:int=0 [line 8, column 14]\n EXIT_SCOPE(n$2); [line 8, column 14]\n " shape="box"]`
initial synchronization 10 years ago

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			`"main.fad58de7366495db4650cfefac2fcd61_4" -> "main.fad58de7366495db4650cfefac2fcd61_3" ;`
initial synchronization 10 years ago			`}`