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-rw-r--r--lib/Frontend/Warnings.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Frontend/Warnings.cpp b/lib/Frontend/Warnings.cpp
index 215f8f8b22..d24779e1a9 100644
--- a/lib/Frontend/Warnings.cpp
+++ b/lib/Frontend/Warnings.cpp
@@ -98,6 +98,13 @@ void clang::ProcessWarningOptions(Diagnostic &Diags,
Mapping = isPositive ? diag::MAP_ERROR : diag::MAP_WARNING_NO_WERROR;
Opt = Specifier;
}
+
+ // -Weverything is a special case as well. It implicitly enables all
+ // warnings, including ones not explicitly in a warning group.
+ if (Opt == "everything") {
+ Diags.setEnableAllWarnings(true);
+ continue;
+ }
// -Wfatal-errors is yet another special case.
if (Opt.startswith("fatal-errors")) {