hanchenye-llvm-project/clang/test/ASTMerge/choose-expr/test.c

// RUN: %clang_cc1 -std=c11 -emit-pch -o %t.ast %S/Inputs/choose.c
// RUN: %clang_cc1 -std=c11 -ast-merge %t.ast -fsyntax-only -verify %s
// expected-no-diagnostics
[ASTImporter] Add support for importing ChooseExpr AST nodes. Summary: This allows ASTs to be merged when they contain ChooseExpr (the GNU __builtin_choose_expr construction). This is needed, for example, for cross-CTU analysis of C code that makes use of __builtin_choose_expr. The node is already supported in the AST, but it didn't have a matcher in ASTMatchers. So, this change adds the matcher and adds support to ASTImporter. This was originally reviewed and approved in https://reviews.llvm.org/D58292 and submitted as r354832. It was reverted in r354839 due to failures on the Windows CI builds. This version fixes the test failures on Windows, which were caused by differences in template expansion between versions of clang on different OSes. The version of clang built with MSVC and running on Windows never expands the template in the C++ test in ImportExpr.ImportChooseExpr in clang/unittests/AST/ASTImporter.cpp, but the version on Linux does for the empty arguments and -fms-compatibility. So, this version of the patch drops the C++ test for __builtin_choose_expr, since that version was written to catch regressions of the logic for isConditionTrue() in the AST import code for ChooseExpr, and those regressions are also caught by ASTImporterOptionSpecificTestBase.ImportChooseExpr, which does work on Windows. Reviewers: shafik, a_sidorin, martong, aaron.ballman, rnk, a.sidorin Subscribers: cfe-commits, jdoerfert, rnkovacs, aaron.ballman Tags: #clang Differential Revision: https://reviews.llvm.org/D58663 llvm-svn: 354916 2019-02-27 03:26:41 +08:00			`// RUN: %clang_cc1 -std=c11 -emit-pch -o %t.ast %S/Inputs/choose.c`
			`// RUN: %clang_cc1 -std=c11 -ast-merge %t.ast -fsyntax-only -verify %s`
			`// expected-no-diagnostics`