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Fixed AstNode::mkconst_bits() segfault on zero-sized constant

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This commit is contained in:
Clifford Wolf 2015-09-24 11:21:20 +02:00
parent e2e092b144
commit 1b8cb9940e
1 changed files with 1 additions and 1 deletions
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2
frontends/ast/ast.cc
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@ -699,7 +699,7 @@ AstNode *AstNode::mkconst_bits(const std::vector<RTLIL::State> &v, bool is_signe
for (size_t i = 0; i < 32; i++) {
if (i < node->bits.size())
node->integer |= (node->bits[i] == RTLIL::S1) << i;
else if (is_signed)
else if (is_signed && !node->bits.empty())
node->integer |= (node->bits.back() == RTLIL::S1) << i;
}
node->range_valid = true;