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-rw-r--r--clang/lib/Driver/Driver.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index d7a5ee9139a..455e492d832 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -387,6 +387,9 @@ Compilation *Driver::BuildCompilation(ArrayRef<const char *> ArgList) {
InputArgList Args = ParseArgStrings(ArgList.slice(1));
+ // Silence driver warnings if requested
+ Diags.setIgnoreAllWarnings(Args.hasArg(options::OPT_w));
+
// -no-canonical-prefixes is used very early in main.
Args.ClaimAllArgs(options::OPT_no_canonical_prefixes);
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