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-rw-r--r--clang/lib/Tooling/ArgumentsAdjusters.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/clang/lib/Tooling/ArgumentsAdjusters.cpp b/clang/lib/Tooling/ArgumentsAdjusters.cpp
index ac9fd3c5cad..8fcaa8afe43 100644
--- a/clang/lib/Tooling/ArgumentsAdjusters.cpp
+++ b/clang/lib/Tooling/ArgumentsAdjusters.cpp
@@ -58,7 +58,9 @@ ArgumentsAdjuster getClangStripDependencyFileAdjuster() {
StringRef Arg = Args[i];
// All dependency-file options begin with -M. These include -MM,
// -MF, -MG, -MP, -MT, -MQ, -MD, and -MMD.
- if (!Arg.startswith("-M"))
+ // The exception is -f[no-]canonical-system-headers.
+ if (!Arg.startswith("-M") && Arg != "-fno-canonical-system-headers" &&
+ Arg != "-fcanonical-system-headers")
AdjustedArgs.push_back(Args[i]);
if ((Arg == "-MF") || (Arg == "-MT") || (Arg == "-MQ") ||
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