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[libclang] Fix a crash when serializing a preprocessing record that contains 

an #include entry that did not resolve to header file.

Part of rdar://11007039

llvm-svn: 152275
This commit is contained in:
Argyrios Kyrtzidis 2012-03-08 01:08:28 +00:00
parent 0cf55e99c6
commit 8dbcfc39cd
3 changed files with 12 additions and 8 deletions
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7
clang/lib/Serialization/ASTReader.cpp
View File

@ -3447,9 +3447,10 @@ PreprocessedEntity *ASTReader::ReadPreprocessedEntity(unsigned Index) {
case PPD_INCLUSION_DIRECTIVE: {
const char *FullFileNameStart = BlobStart + Record[0];
const FileEntry *File
= PP.getFileManager().getFile(StringRef(FullFileNameStart,
BlobLen - Record[0]));
StringRef FullFileName(FullFileNameStart, BlobLen - Record[0]);
const FileEntry *File = 0;
if (!FullFileName.empty())
File = PP.getFileManager().getFile(FullFileName);
// FIXME: Stable encoding
InclusionDirective::InclusionKind Kind

5
clang/lib/Serialization/ASTWriter.cpp
View File

@ -1832,7 +1832,10 @@ void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) {
Record.push_back(static_cast<unsigned>(ID->getKind()));
SmallString<64> Buffer;
Buffer += ID->getFileName();
Buffer += ID->getFile()->getName();
// Check that the FileEntry is not null because it was not resolved and
// we create a PCH even with compiler errors.
if (ID->getFile())
Buffer += ID->getFile()->getName();
Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
continue;
}

8
clang/test/Index/pch-with-errors.c
View File

@ -1,7 +1,7 @@
#ifndef HEADER
#define HEADER
#include "blahblah.h"
void erroneous(int);
void erroneous(float);
@ -13,9 +13,9 @@ void foo(void) {
#endif
// RUN: c-index-test -write-pch %t.h.pch %s
// RUN: c-index-test -test-load-source local %s -include %t.h | FileCheck -check-prefix=CHECK-PARSE %s
// RUN: c-index-test -index-file %s -include %t.h | FileCheck -check-prefix=CHECK-INDEX %s
// RUN: c-index-test -write-pch %t.h.pch %s -Xclang -detailed-preprocessing-record
// RUN: c-index-test -test-load-source local %s -include %t.h -Xclang -detailed-preprocessing-record | FileCheck -check-prefix=CHECK-PARSE %s
// RUN: c-index-test -index-file %s -include %t.h -Xclang -detailed-preprocessing-record | FileCheck -check-prefix=CHECK-INDEX %s
// CHECK-PARSE: pch-with-errors.c:10:6: FunctionDecl=foo:10:6 (Definition) Extent=[10:1 - 12:2]
// CHECK-PARSE: pch-with-errors.c:11:3: CallExpr=erroneous:5:6 Extent=[11:3 - 11:15]