The Tor Browser / file comparison
comparison: xpcom/analysis/static-init.js
xpcom/analysis/static-init.js
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:28f55bd3f51c |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 /** | |
| 6 * Detects static initializers i.e. functions called during static initialization. | |
| 7 */ | |
| 8 | |
| 9 require({ after_gcc_pass: "cfg" }); | |
| 10 | |
| 11 function process_tree(fn) { | |
| 12 for each (let attr in translate_attributes(DECL_ATTRIBUTES(fn))) | |
| 13 if (attr.name == "constructor") | |
| 14 warning(pretty_func(fn) + " marked with constructor attribute\n"); | |
| 15 | |
| 16 if (decl_name_string(fn) != "__static_initialization_and_destruction_0") | |
| 17 return; | |
| 18 | |
| 19 let cfg = function_decl_cfg(fn); | |
| 20 for (let isn in cfg_isn_iterator(cfg)) { | |
| 21 if (isn.tree_code() != GIMPLE_CALL) | |
| 22 continue; | |
| 23 let decl = gimple_call_fndecl(isn); | |
| 24 let lhs = gimple_call_lhs(isn); | |
| 25 if (lhs) { | |
| 26 warning(pretty_var(lhs) + " defined by call to " + pretty_func(decl) + | |
| 27 " during static initialization", location_of(lhs)); | |
| 28 } else { | |
| 29 let arg = constructorArg(isn); | |
| 30 if (arg) | |
| 31 warning(pretty_var(arg) + " defined by call to constructor " + pretty_func(decl) + | |
| 32 " during static initialization", location_of(arg)); | |
| 33 else | |
| 34 warning(pretty_func(decl) + " called during static initialization", location_of(decl)); | |
| 35 } | |
| 36 } | |
| 37 } | |
| 38 | |
| 39 function constructorArg(call) { | |
| 40 let decl = gimple_call_fndecl(call); | |
| 41 | |
| 42 if (!DECL_CONSTRUCTOR_P(decl)) | |
| 43 return null; | |
| 44 | |
| 45 let arg = gimple_call_arg_iterator(call).next(); | |
| 46 if (TYPE_MAIN_VARIANT(TREE_TYPE(TREE_TYPE(arg))) != DECL_CONTEXT(decl)) | |
| 47 throw new Error("malformed constructor call?!"); | |
| 48 | |
| 49 return arg.tree_code() == ADDR_EXPR ? TREE_OPERAND(arg, 0) : arg; | |
| 50 } | |
| 51 | |
| 52 function pretty_func(fn) { | |
| 53 return rfunc_string(rectify_function_decl(fn)); | |
| 54 } | |
| 55 | |
| 56 function pretty_var(v) { | |
| 57 return type_string(TREE_TYPE(v)) + " " + expr_display(v); | |
| 58 } |
