xpcom/analysis/static-init.js@6474c204b198 (annotated)
xpcom/analysis/static-init.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | /** |
| michael@0 | 6 | * Detects static initializers i.e. functions called during static initialization. |
| michael@0 | 7 | */ |
| michael@0 | 8 | |
| michael@0 | 9 | require({ after_gcc_pass: "cfg" }); |
| michael@0 | 10 | |
| michael@0 | 11 | function process_tree(fn) { |
| michael@0 | 12 | for each (let attr in translate_attributes(DECL_ATTRIBUTES(fn))) |
| michael@0 | 13 | if (attr.name == "constructor") |
| michael@0 | 14 | warning(pretty_func(fn) + " marked with constructor attribute\n"); |
| michael@0 | 15 | |
| michael@0 | 16 | if (decl_name_string(fn) != "__static_initialization_and_destruction_0") |
| michael@0 | 17 | return; |
| michael@0 | 18 | |
| michael@0 | 19 | let cfg = function_decl_cfg(fn); |
| michael@0 | 20 | for (let isn in cfg_isn_iterator(cfg)) { |
| michael@0 | 21 | if (isn.tree_code() != GIMPLE_CALL) |
| michael@0 | 22 | continue; |
| michael@0 | 23 | let decl = gimple_call_fndecl(isn); |
| michael@0 | 24 | let lhs = gimple_call_lhs(isn); |
| michael@0 | 25 | if (lhs) { |
| michael@0 | 26 | warning(pretty_var(lhs) + " defined by call to " + pretty_func(decl) + |
| michael@0 | 27 | " during static initialization", location_of(lhs)); |
| michael@0 | 28 | } else { |
| michael@0 | 29 | let arg = constructorArg(isn); |
| michael@0 | 30 | if (arg) |
| michael@0 | 31 | warning(pretty_var(arg) + " defined by call to constructor " + pretty_func(decl) + |
| michael@0 | 32 | " during static initialization", location_of(arg)); |
| michael@0 | 33 | else |
| michael@0 | 34 | warning(pretty_func(decl) + " called during static initialization", location_of(decl)); |
| michael@0 | 35 | } |
| michael@0 | 36 | } |
| michael@0 | 37 | } |
| michael@0 | 38 | |
| michael@0 | 39 | function constructorArg(call) { |
| michael@0 | 40 | let decl = gimple_call_fndecl(call); |
| michael@0 | 41 | |
| michael@0 | 42 | if (!DECL_CONSTRUCTOR_P(decl)) |
| michael@0 | 43 | return null; |
| michael@0 | 44 | |
| michael@0 | 45 | let arg = gimple_call_arg_iterator(call).next(); |
| michael@0 | 46 | if (TYPE_MAIN_VARIANT(TREE_TYPE(TREE_TYPE(arg))) != DECL_CONTEXT(decl)) |
| michael@0 | 47 | throw new Error("malformed constructor call?!"); |
| michael@0 | 48 | |
| michael@0 | 49 | return arg.tree_code() == ADDR_EXPR ? TREE_OPERAND(arg, 0) : arg; |
| michael@0 | 50 | } |
| michael@0 | 51 | |
| michael@0 | 52 | function pretty_func(fn) { |
| michael@0 | 53 | return rfunc_string(rectify_function_decl(fn)); |
| michael@0 | 54 | } |
| michael@0 | 55 | |
| michael@0 | 56 | function pretty_var(v) { |
| michael@0 | 57 | return type_string(TREE_TYPE(v)) + " " + expr_display(v); |
| michael@0 | 58 | } |
