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Fix array reduction in constraints crashing with class inheritance (#7226) (#7263)

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This commit is contained in:
Yilou Wang
2026-03-16 16:36:48 -04:00
committed by GitHub
parent e5d0b89bfc
commit bf792f1809
3 changed files with 100 additions and 5 deletions
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src/V3Randomize.cpp
+4 -5
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@@ -2368,9 +2368,8 @@ class ConstraintExprVisitor final : public VNVisitor {
const std::string smtArrayName = arrVarp->name();
AstNodeDType* elemDtp = arrVarp->dtypep()->skipRefp()->subDTypep();
const int elemWidth = elemDtp->width();
AstNodeModule* const classModulep = m_classp
? static_cast<AstNodeModule*>(m_classp)
: VN_AS(m_genp->user2p(), NodeModule);
AstNodeModule* const arrModulep = VN_AS(arrVarp->user2p(), NodeModule);
AstNodeModule* const genModulep = VN_AS(m_genp->user2p(), NodeModule);
arrVarp->user3(true);
// Create variable name using AstSFormatF
@@ -2379,7 +2378,7 @@ class ConstraintExprVisitor final : public VNVisitor {
// Create array element reference: array.atWrite(index)
AstCMethodHard* const atWritep = new AstCMethodHard{
fl, new AstVarRef{fl, classModulep, arrVarp, VAccess::READWRITE},
fl, new AstVarRef{fl, arrModulep, arrVarp, VAccess::READWRITE},
VCMethod::ARRAY_AT_WRITE, new AstVarRef{fl, loopVarp, VAccess::READ}};
atWritep->dtypeFrom(elemDtp);
@@ -2392,7 +2391,7 @@ class ConstraintExprVisitor final : public VNVisitor {
// Create write_var method call: gen.write_var(arrElement, width, name, 0)
AstCMethodHard* const writeVarp = new AstCMethodHard{
fl, new AstVarRef{fl, classModulep, m_genp, VAccess::READWRITE},
fl, new AstVarRef{fl, genModulep, m_genp, VAccess::READWRITE},
VCMethod::RANDOMIZER_WRITE_VAR, atWritep};
writeVarp->addPinsp(new AstConst{fl, AstConst::WidthedValue{}, 64,
static_cast<uint32_t>(elemWidth)});