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author | Alex Lorenz <arphaman@gmail.com> | 2017-07-18 17:23:51 +0000 |
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committer | Alex Lorenz <arphaman@gmail.com> | 2017-07-18 17:23:51 +0000 |
commit | 95c5cdeb80aaf0819eba8ddd4421d04be5e271ff (patch) | |
tree | 394db054f724617b57bbbde190b36206150aa688 /lib/Serialization/ASTReader.cpp | |
parent | 149c4361fbaff25f1aaea466d5350665ab7fa5d3 (diff) | |
download | clang-95c5cdeb80aaf0819eba8ddd4421d04be5e271ff.tar.gz |
Add a warning for missing '#pragma pack (pop)' and suspicious uses
of '#pragma pack' in included files
This commit adds a new -Wpragma-pack warning. It warns in the following cases:
- When a translation unit is missing terminating #pragma pack (pop) directives.
- When entering an included file if the current alignment value as determined
by '#pragma pack' directives is different from the default alignment value.
- When leaving an included file that changed the state of the current alignment
value.
rdar://10184173
Differential Revision: https://reviews.llvm.org/D35484
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@308327 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Serialization/ASTReader.cpp')
-rw-r--r-- | lib/Serialization/ASTReader.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Serialization/ASTReader.cpp b/lib/Serialization/ASTReader.cpp index 50be74f6bf..a384d051d6 100644 --- a/lib/Serialization/ASTReader.cpp +++ b/lib/Serialization/ASTReader.cpp @@ -3384,6 +3384,7 @@ ASTReader::ReadASTBlock(ModuleFile &F, unsigned ClientLoadCapabilities) { PragmaPackStackEntry Entry; Entry.Value = Record[Idx++]; Entry.Location = ReadSourceLocation(F, Record[Idx++]); + Entry.PushLocation = ReadSourceLocation(F, Record[Idx++]); PragmaPackStrings.push_back(ReadString(Record, Idx)); Entry.SlotLabel = PragmaPackStrings.back(); PragmaPackStack.push_back(Entry); @@ -7579,13 +7580,14 @@ void ASTReader::UpdateSema() { "Expected a default alignment value"); SemaObj->PackStack.Stack.emplace_back( PragmaPackStack.front().SlotLabel, SemaObj->PackStack.CurrentValue, - SemaObj->PackStack.CurrentPragmaLocation); + SemaObj->PackStack.CurrentPragmaLocation, + PragmaPackStack.front().PushLocation); DropFirst = true; } for (const auto &Entry : llvm::makeArrayRef(PragmaPackStack).drop_front(DropFirst ? 1 : 0)) SemaObj->PackStack.Stack.emplace_back(Entry.SlotLabel, Entry.Value, - Entry.Location); + Entry.Location, Entry.PushLocation); if (PragmaPackCurrentLocation.isInvalid()) { assert(*PragmaPackCurrentValue == SemaObj->PackStack.DefaultValue && "Expected a default alignment value"); |