fix PR6814 - Only print [-pedantic] on a diagnostic if -pedantic
actually turned it on. If a diag is produced by a warning which
is an extension but defaults to on, and has no warning group, don't
print any option info.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101071 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Diagnostic.cpp b/lib/Basic/Diagnostic.cpp
index 1eeb25b..bd1d6e8 100644
--- a/lib/Basic/Diagnostic.cpp
+++ b/lib/Basic/Diagnostic.cpp
@@ -287,11 +287,18 @@
}
/// isBuiltinExtensionDiag - Determine whether the given built-in diagnostic
-/// ID is for an extension of some sort.
+/// ID is for an extension of some sort. This also returns EnabledByDefault,
+/// which is set to indicate whether the diagnostic is ignored by default (in
+/// which case -pedantic enables it) or treated as a warning/error by default.
///
-bool Diagnostic::isBuiltinExtensionDiag(unsigned DiagID) {
- return DiagID < diag::DIAG_UPPER_LIMIT &&
- getBuiltinDiagClass(DiagID) == CLASS_EXTENSION;
+bool Diagnostic::isBuiltinExtensionDiag(unsigned DiagID,
+ bool &EnabledByDefault) {
+ if (DiagID >= diag::DIAG_UPPER_LIMIT ||
+ getBuiltinDiagClass(DiagID) != CLASS_EXTENSION)
+ return false;
+
+ EnabledByDefault = StaticDiagInfo[DiagID].Mapping != diag::MAP_IGNORE;
+ return true;
}
diff --git a/lib/Frontend/TextDiagnosticPrinter.cpp b/lib/Frontend/TextDiagnosticPrinter.cpp
index 4e91f8d..6c8137e 100644
--- a/lib/Frontend/TextDiagnosticPrinter.cpp
+++ b/lib/Frontend/TextDiagnosticPrinter.cpp
@@ -796,8 +796,13 @@
OutStr += " [-W";
OutStr += Opt;
OutStr += ']';
- } else if (Diagnostic::isBuiltinExtensionDiag(Info.getID())) {
- OutStr += " [-pedantic]";
+ } else {
+ // If the diagnostic is an extension diagnostic and not enabled by default
+ // then it must have been turned on with -pedantic.
+ bool EnabledByDefault;
+ if (Diagnostic::isBuiltinExtensionDiag(Info.getID(), EnabledByDefault) &&
+ !EnabledByDefault)
+ OutStr += " [-pedantic]";
}
}