From 4cd905bdc1a84b8f9424a031c56e3d99249082f9 Mon Sep 17 00:00:00 2001 From: Alex Lorenz Date: Thu, 18 Jul 2019 22:33:14 +0000 Subject: [clang-scan-deps] Dependency directives source minimizer: handle #pragma once We should re-emit `#pragma once` to ensure the preprocessor will still honor it when running on minimized sources. Differential Revision: https://reviews.llvm.org/D64945 llvm-svn: 366509 --- clang/lib/Lex/DependencyDirectivesSourceMinimizer.cpp | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'clang/lib/Lex/DependencyDirectivesSourceMinimizer.cpp') diff --git a/clang/lib/Lex/DependencyDirectivesSourceMinimizer.cpp b/clang/lib/Lex/DependencyDirectivesSourceMinimizer.cpp index cfc37c5d3c6..2e8c5f3a51a 100644 --- a/clang/lib/Lex/DependencyDirectivesSourceMinimizer.cpp +++ b/clang/lib/Lex/DependencyDirectivesSourceMinimizer.cpp @@ -612,7 +612,21 @@ bool Minimizer::lexDefine(const char *&First, const char *const End) { bool Minimizer::lexPragma(const char *&First, const char *const End) { // #pragma. - if (!isNextIdentifier("clang", First, End)) { + skipWhitespace(First, End); + if (First == End || !isIdentifierHead(*First)) + return false; + + IdInfo FoundId = lexIdentifier(First, End); + First = FoundId.Last; + if (FoundId.Name == "once") { + // #pragma once + skipLine(First, End); + makeToken(pp_pragma_once); + append("#pragma once\n"); + return false; + } + + if (FoundId.Name != "clang") { skipLine(First, End); return false; } -- cgit v1.2.3