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Frontend: Propagate ASTReaderListener API in ChainedASTReaderListener 

ASTReaderListener's documentation states that visitInputFile will be
called based on the return values of needsInputFileVisitation and
needsSystemInputFileVisitation, but ChainedASTReaderListener may call
these methods on a child listener based on the values returned by the
other child.

Even worse, the calls to visitInputFile may be short-circuited due to
the use of the boolean or, so the calls to visit may not occur at all
for the second listener.

This updates ChainedASTReaderListener::visitInputFile to propagate the
ASTReaderListener behaviour to both children.

llvm-svn: 209394
This commit is contained in:
Justin Bogner 2014-05-22 06:04:59 +00:00
parent 9dd60cfb64
commit c65a66ddfe
1 changed files with 8 additions and 2 deletions
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10
clang/lib/Serialization/ASTReader.cpp
View File

@ -135,8 +135,14 @@ void ChainedASTReaderListener::visitModuleFile(StringRef Filename) {
bool ChainedASTReaderListener::visitInputFile(StringRef Filename,
bool isSystem,
bool isOverridden) {
return First->visitInputFile(Filename, isSystem, isOverridden) ||
Second->visitInputFile(Filename, isSystem, isOverridden);
bool Continue = false;
if (First->needsInputFileVisitation() &&
(!isSystem || First->needsSystemInputFileVisitation()))
Continue |= First->visitInputFile(Filename, isSystem, isOverridden);
if (Second->needsInputFileVisitation() &&
(!isSystem || Second->needsSystemInputFileVisitation()))
Continue |= Second->visitInputFile(Filename, isSystem, isOverridden);
return Continue;
}
//===----------------------------------------------------------------------===//