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authorClifford Wolf <clifford@clifford.at>2019-06-26 11:09:43 +0200
committerClifford Wolf <clifford@clifford.at>2019-06-26 11:09:43 +0200
commitf6053b88103bfc652dec1959f30bfb1880613f61 (patch)
treed18e48773a2472de67920ea804252c9ad82f0d15 /frontends
parent8e9ef891febb47f512710de591401539ad521634 (diff)
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Fix segfault on failed VERILOG_FRONTEND::const2ast, closes #1131
Signed-off-by: Clifford Wolf <clifford@clifford.at>
Diffstat (limited to 'frontends')
-rw-r--r--frontends/verilog/const2ast.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/frontends/verilog/const2ast.cc b/frontends/verilog/const2ast.cc
index 3a3634d34..f6a17b242 100644
--- a/frontends/verilog/const2ast.cc
+++ b/frontends/verilog/const2ast.cc
@@ -153,7 +153,7 @@ AstNode *VERILOG_FRONTEND::const2ast(std::string code, char case_type, bool warn
{
if (warn_z) {
AstNode *ret = const2ast(code, case_type);
- if (std::find(ret->bits.begin(), ret->bits.end(), RTLIL::State::Sz) != ret->bits.end())
+ if (ret != nullptr && std::find(ret->bits.begin(), ret->bits.end(), RTLIL::State::Sz) != ret->bits.end())
log_warning("Yosys has only limited support for tri-state logic at the moment. (%s:%d)\n",
current_filename.c_str(), get_line_num());
return ret;