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llvm-project/clang/test/Parser/pragma-options.cpp

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Recommit r308327 3rd time: Add a warning for missing '#pragma pack (pop)' and suspicious uses of '#pragma pack' in included files The second recommit (r309106) was reverted because the "non-default #pragma pack value chages the alignment of struct or union members in the included file" warning proved to be too aggressive for external projects like Chromium (https://bugs.chromium.org/p/chromium/issues/detail?id=749197). This recommit makes the problematic warning a non-default one, and gives it the -Wpragma-pack-suspicious-include warning option. The first recommit (r308441) caused a "non-default #pragma pack value might change the alignment of struct or union members in the included file" warning in LLVM itself. This recommit tweaks the added warning to avoid warnings for #includes that don't have any records that are affected by the non-default alignment. This tweak avoids the previously emitted warning in LLVM. Original message: 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 llvm-svn: 309386
2017-07-28 22:41:21 +08:00
// RUN: %clang_cc1 -triple i386-apple-darwin9 -Wno-pragma-pack -fsyntax-only -verify %s
Prior to adding the new "expected-no-diagnostics" directive to VerifyDiagnosticConsumer, make the necessary adjustment to 580 test-cases which will henceforth require this new directive. llvm-svn: 166280
2012-10-19 20:44:48 +08:00
// expected-no-diagnostics
Handle a "#pragma options align" inside a class. llvm-svn: 165810
2012-10-13 01:39:59 +08:00
class C {
#pragma options align=natural
};