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Fix shift of > 32-bit number (#4719).

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This commit is contained in:
Wilson Snyder
2023-11-27 21:41:32 -05:00
parent a022b672a0
commit 7167d4bdc0
9 changed files with 43 additions and 40 deletions
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src/V3Number.cpp
+11 -5
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@@ -896,14 +896,20 @@ string V3Number::toDecimalU() const VL_MT_STABLE {
//======================================================================
// ACCESSORS - as numbers
bool V3Number::fitsInUInt() const VL_MT_SAFE {
if (isFourState()) return false;
// We allow wide numbers that represent values <= 32 bits
for (int i = 1; i < words(); ++i) {
if (m_data.num()[i].m_value) return false;
}
return true;
}
uint32_t V3Number::toUInt() const VL_MT_SAFE {
UASSERT(!isFourState(), "toUInt with 4-state " << *this);
// We allow wide numbers that represent values <= 32 bits
for (int i = 1; i < words(); ++i) {
if (m_data.num()[i].m_value) {
v3error("Value too wide for 32-bits expected in this context " << *this);
break;
}
if (VL_UNCOVERABLE(!fitsInUInt())) {
v3error("Value too wide for 32-bits expected in this context " // LCOV_EXCL_LINE
<< *this);
}
return m_data.num()[0].m_value;
}