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Merge remote-tracking branch 'origin/eddie/fix1132' into xc7mux

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This commit is contained in:
Eddie Hung 2019-06-26 14:48:35 -07:00
commit 812469aaa3
9 changed files with 352 additions and 93 deletions
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2
frontends/verilog/const2ast.cc
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@ -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;