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Fixed use-after-free dict<> usage pattern in hierarchy.cc
author
Clifford Wolf
<clifford@clifford.at>
Tue, 16 Aug 2016 07:07:13 +0000
(09:07 +0200)
committer
Clifford Wolf
<clifford@clifford.at>
Tue, 16 Aug 2016 07:07:13 +0000
(09:07 +0200)
passes/hierarchy/hierarchy.cc
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diff --git
a/passes/hierarchy/hierarchy.cc
b/passes/hierarchy/hierarchy.cc
index 92fcb7d40a855cec0b056109ade5ddb3d39fc7bb..4bb765e75138e4e335221f6fc8169f3c49cb4f84 100644
(file)
--- a/
passes/hierarchy/hierarchy.cc
+++ b/
passes/hierarchy/hierarchy.cc
@@
-322,10
+322,12
@@
bool set_keep_assert(std::map<RTLIL::Module*, bool> &cache, RTLIL::Module *mod)
int find_top_mod_score(Design *design, Module *module, dict<Module*, int> &db)
{
if (db.count(module) == 0) {
+ int score = 0;
db[module] = 0;
for (auto cell : module->cells())
if (design->module(cell->type))
- db[module] = max(db[module], find_top_mod_score(design, design->module(cell->type), db) + 1);
+ score = max(score, find_top_mod_score(design, design->module(cell->type), db) + 1);
+ db[module] = score;
}
return db.at(module);
}