[PATCH] D75483: [Sema] Fix a crash when attaching comments to an implicit decl
Erik Pilkington via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Mon Mar 2 16:55:45 PST 2020
This revision was automatically updated to reflect the committed changes.
Closed by commit rG29a4239d31c6: [Sema] Fix a crash when attaching comments to an implicit decl (authored by erik.pilkington).
Herald added a project: clang.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D75483/new/
https://reviews.llvm.org/D75483
Files:
clang/lib/AST/ASTContext.cpp
clang/test/Sema/warn-documentation.m
Index: clang/test/Sema/warn-documentation.m
===================================================================
--- clang/test/Sema/warn-documentation.m
+++ clang/test/Sema/warn-documentation.m
@@ -1,4 +1,5 @@
// RUN: %clang_cc1 -fsyntax-only -fblocks -Wno-objc-root-class -Wdocumentation -Wdocumentation-pedantic -verify %s
+// RUN: %clang_cc1 -xobjective-c++ -fsyntax-only -fblocks -Wno-objc-root-class -Wdocumentation -Wdocumentation-pedantic -verify %s
@class NSString;
@@ -318,3 +319,10 @@
// expected-warning at -1 {{'\return' command used in a comment that is not attached to a function or method declaration}}
VoidBlockTypeCall ^e; ///< \return none
// expected-warning at -1 {{'\return' command used in a comment that is not attached to a function or method declaration}}
+
+#ifdef __cplusplus
+ at interface HasAnonNamespace @end
+ at implementation HasAnonNamespace
+namespace {}
+ at end
+#endif
Index: clang/lib/AST/ASTContext.cpp
===================================================================
--- clang/lib/AST/ASTContext.cpp
+++ clang/lib/AST/ASTContext.cpp
@@ -474,10 +474,20 @@
if (Comments.empty() || Decls.empty())
return;
- // See if there are any new comments that are not attached to a decl.
- // The location doesn't have to be precise - we care only about the file.
- const FileID File =
- SourceMgr.getDecomposedLoc((*Decls.begin())->getLocation()).first;
+ FileID File;
+ for (Decl *D : Decls) {
+ SourceLocation Loc = D->getLocation();
+ if (Loc.isValid()) {
+ // See if there are any new comments that are not attached to a decl.
+ // The location doesn't have to be precise - we care only about the file.
+ File = SourceMgr.getDecomposedLoc(Loc).first;
+ break;
+ }
+ }
+
+ if (File.isInvalid())
+ return;
+
auto CommentsInThisFile = Comments.getCommentsInFile(File);
if (!CommentsInThisFile || CommentsInThisFile->empty() ||
CommentsInThisFile->rbegin()->second->isAttached())
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