maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Harden Clang's cursor visitation logic against NULL declaration, 

statement, and expression pointers. While these shouldn't happen, it's
better to be safe in libclang.

llvm-svn: 129539
This commit is contained in:
Douglas Gregor 2011-04-14 21:41:34 +00:00
parent 92651ec374
commit 7df2126000
1 changed files with 16 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
clang/tools/libclang/CIndex.cpp
View File

@ -494,14 +494,25 @@ bool CursorVisitor::VisitChildren(CXCursor Cursor) {
if (clang_isDeclaration(Cursor.kind)) {
Decl *D = getCursorDecl(Cursor);
assert(D && "Invalid declaration cursor");
if (!D)
return false;
return VisitAttributes(D) || Visit(D);
}
if (clang_isStatement(Cursor.kind))
return Visit(getCursorStmt(Cursor));
if (clang_isExpression(Cursor.kind))
return Visit(getCursorExpr(Cursor));
if (clang_isStatement(Cursor.kind)) {
if (Stmt *S = getCursorStmt(Cursor))
return Visit(S);
return false;
}
if (clang_isExpression(Cursor.kind)) {
if (Expr *E = getCursorExpr(Cursor))
return Visit(E);
return false;
}
if (clang_isTranslationUnit(Cursor.kind)) {
CXTranslationUnit tu = getCursorTU(Cursor);