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Fix writing to out-of-bounds arrays writing element 0.

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This commit is contained in:
Wilson Snyder
2009-10-08 20:42:45 -04:00
parent c42612abac
commit ceb2f6894f
11 changed files with 462 additions and 25 deletions
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src/V3Task.cpp
+3 -9
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@@ -191,11 +191,7 @@ private:
// Wire assigns must become always statements to deal with insertion
// of multiple statements. Perhaps someday make all wassigns into always's?
UINFO(5," IM_WireRep "<<m_assignwp<<endl);
AstNode* lhsp = m_assignwp->lhsp()->unlinkFrBack();
AstNode* rhsp = m_assignwp->rhsp()->unlinkFrBack();
AstNode* assignp = new AstAssign (m_assignwp->fileline(), lhsp, rhsp);
AstNode* alwaysp = new AstAlways (m_assignwp->fileline(), NULL, assignp);
m_assignwp->replaceWith(alwaysp); pushDeletep(m_assignwp); m_assignwp=NULL;
m_assignwp->convertToAlways(); pushDeletep(m_assignwp); m_assignwp=NULL;
}
// We make multiple edges if a task is called multiple times from another task.
new TaskEdge (&m_callGraph, m_curVxp, getFTaskVertex(nodep->taskp()));
@@ -609,16 +605,14 @@ private:
m_scopep = oldscopep;
}
void insertBeforeStmt(AstNode* nodep, AstNode* newp) {
// See also AstNode::addBeforeStmt; this predates that function
if (debug()>=9) { nodep->dumpTree(cout,"-newstmt:"); }
if (!m_insStmtp) nodep->v3fatalSrc("Function not underneath a statement");
if (m_insMode == IM_BEFORE) {
// Add the whole thing before insertAt
UINFO(5," IM_Before "<<m_insStmtp<<endl);
AstNRelinker handle;
m_insStmtp->unlinkFrBackWithNext(&handle);
if (debug()>=9) { newp->dumpTree(cout,"-newfunc:"); }
newp->addNext(m_insStmtp);
handle.relink(newp);
m_insStmtp->addHereThisAsNext(newp);
}
else if (m_insMode == IM_AFTER) {
UINFO(5," IM_After "<<m_insStmtp);