include/o3tl/typed_flags_set.hxx        |   96 ++++++++++++++++----------------
 include/o3tl/underlyingenumvalue.hxx    |    3 -
 sc/inc/address.hxx                      |    4 -
 sc/source/core/tool/address.cxx         |    2 
 sc/source/core/tool/reffind.cxx         |    2 
 vcl/source/animate/AnimationBitmap.cxx  |    2 
 xmlsecurity/qa/unit/signing/signing.cxx |   28 ++++-----
 7 files changed, 69 insertions(+), 68 deletions(-)

New commits:
commit e41024bc9a693164ffc64048046469aaa81a07d4
Author:     Mike Kaganski <mike.kagan...@collabora.com>
AuthorDate: Wed Nov 24 00:00:21 2021 +0300
Commit:     Mike Kaganski <mike.kagan...@collabora.com>
CommitDate: Wed Nov 24 05:30:53 2021 +0100

    Rename o3tl::underlyingEnumValue to o3tl::to_underlying to match C++23
    
    Change-Id: I1597a8e77199445bf377dbe54adc3134bb04fd51
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/125748
    Tested-by: Jenkins
    Reviewed-by: Mike Kaganski <mike.kagan...@collabora.com>

diff --git a/include/o3tl/typed_flags_set.hxx b/include/o3tl/typed_flags_set.hxx
index 7c9053bcd4f0..413ee9579d4d 100644
--- a/include/o3tl/typed_flags_set.hxx
+++ b/include/o3tl/typed_flags_set.hxx
@@ -104,10 +104,10 @@ template<typename E>
 constexpr typename o3tl::typed_flags<E>::Wrap operator ~(E rhs) {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(rhs)));
+            o3tl::to_underlying(rhs)));
     return static_cast<typename o3tl::typed_flags<E>::Wrap>(
         o3tl::typed_flags<E>::mask
-        & ~o3tl::underlyingEnumValue(rhs));
+        & ~o3tl::to_underlying(rhs));
 }
 
 template<typename E> constexpr typename o3tl::typed_flags<E>::Wrap operator ~(
@@ -115,7 +115,7 @@ template<typename E> constexpr typename 
o3tl::typed_flags<E>::Wrap operator ~(
 {
     return static_cast<typename o3tl::typed_flags<E>::Wrap>(
         o3tl::typed_flags<E>::mask
-        & ~o3tl::underlyingEnumValue<E>(rhs));
+        & ~o3tl::to_underlying<E>(rhs));
 }
 
 template<typename E> constexpr typename o3tl::typed_flags<E>::Wrap operator ^(
@@ -123,13 +123,13 @@ template<typename E> constexpr typename 
o3tl::typed_flags<E>::Wrap operator ^(
 {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(lhs)));
+            o3tl::to_underlying(lhs)));
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(rhs)));
+            o3tl::to_underlying(rhs)));
     return static_cast<typename o3tl::typed_flags<E>::Wrap>(
-        o3tl::underlyingEnumValue(lhs)
-        ^ o3tl::underlyingEnumValue(rhs));
+        o3tl::to_underlying(lhs)
+        ^ o3tl::to_underlying(rhs));
 }
 
 template<typename E> constexpr typename o3tl::typed_flags<E>::Wrap operator ^(
@@ -137,10 +137,10 @@ template<typename E> constexpr typename 
o3tl::typed_flags<E>::Wrap operator ^(
 {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(lhs)));
+            o3tl::to_underlying(lhs)));
     return static_cast<typename o3tl::typed_flags<E>::Wrap>(
-        o3tl::underlyingEnumValue(lhs)
-        ^ o3tl::underlyingEnumValue<E>(rhs));
+        o3tl::to_underlying(lhs)
+        ^ o3tl::to_underlying<E>(rhs));
 }
 
 template<typename E> constexpr typename o3tl::typed_flags<E>::Wrap operator ^(
@@ -148,10 +148,10 @@ template<typename E> constexpr typename 
o3tl::typed_flags<E>::Wrap operator ^(
 {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(rhs)));
+            o3tl::to_underlying(rhs)));
     return static_cast<typename o3tl::typed_flags<E>::Wrap>(
-        o3tl::underlyingEnumValue<E>(lhs)
-        ^ o3tl::underlyingEnumValue(rhs));
+        o3tl::to_underlying<E>(lhs)
+        ^ o3tl::to_underlying(rhs));
 }
 
 template<typename W> constexpr
@@ -159,21 +159,21 @@ typename o3tl::typed_flags<typename 
W::Unwrapped::Self>::Wrap operator ^(
     W lhs, W rhs)
 {
     return static_cast<W>(
-        o3tl::underlyingEnumValue<typename W::Unwrapped::Self>(lhs)
-        ^ o3tl::underlyingEnumValue<typename W::Unwrapped::Self>(rhs));
+        o3tl::to_underlying<typename W::Unwrapped::Self>(lhs)
+        ^ o3tl::to_underlying<typename W::Unwrapped::Self>(rhs));
 }
 
 template<typename E>
 constexpr typename o3tl::typed_flags<E>::Wrap operator &(E lhs, E rhs) {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(lhs)));
+            o3tl::to_underlying(lhs)));
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(rhs)));
+            o3tl::to_underlying(rhs)));
     return static_cast<typename o3tl::typed_flags<E>::Wrap>(
-        o3tl::underlyingEnumValue(lhs)
-        & o3tl::underlyingEnumValue(rhs));
+        o3tl::to_underlying(lhs)
+        & o3tl::to_underlying(rhs));
 }
 
 template<typename E> constexpr typename o3tl::typed_flags<E>::Wrap operator &(
@@ -181,10 +181,10 @@ template<typename E> constexpr typename 
o3tl::typed_flags<E>::Wrap operator &(
 {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(lhs)));
+            o3tl::to_underlying(lhs)));
     return static_cast<typename o3tl::typed_flags<E>::Wrap>(
-        o3tl::underlyingEnumValue(lhs)
-        & o3tl::underlyingEnumValue<E>(rhs));
+        o3tl::to_underlying(lhs)
+        & o3tl::to_underlying<E>(rhs));
 }
 
 template<typename E> constexpr typename o3tl::typed_flags<E>::Wrap operator &(
@@ -192,10 +192,10 @@ template<typename E> constexpr typename 
o3tl::typed_flags<E>::Wrap operator &(
 {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(rhs)));
+            o3tl::to_underlying(rhs)));
     return static_cast<typename o3tl::typed_flags<E>::Wrap>(
-        o3tl::underlyingEnumValue<E>(lhs)
-        & o3tl::underlyingEnumValue(rhs));
+        o3tl::to_underlying<E>(lhs)
+        & o3tl::to_underlying(rhs));
 }
 
 template<typename W> constexpr
@@ -203,21 +203,21 @@ typename o3tl::typed_flags<typename 
W::Unwrapped::Self>::Wrap operator &(
     W lhs, W rhs)
 {
     return static_cast<W>(
-        o3tl::underlyingEnumValue<typename W::Unwrapped::Self>(lhs)
-        & o3tl::underlyingEnumValue<typename W::Unwrapped::Self>(rhs));
+        o3tl::to_underlying<typename W::Unwrapped::Self>(lhs)
+        & o3tl::to_underlying<typename W::Unwrapped::Self>(rhs));
 }
 
 template<typename E>
 constexpr typename o3tl::typed_flags<E>::Wrap operator |(E lhs, E rhs) {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(lhs)));
+            o3tl::to_underlying(lhs)));
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(rhs)));
+            o3tl::to_underlying(rhs)));
     return static_cast<typename o3tl::typed_flags<E>::Wrap>(
-        o3tl::underlyingEnumValue(lhs)
-        | o3tl::underlyingEnumValue(rhs));
+        o3tl::to_underlying(lhs)
+        | o3tl::to_underlying(rhs));
 }
 
 template<typename E> constexpr typename o3tl::typed_flags<E>::Wrap operator |(
@@ -225,10 +225,10 @@ template<typename E> constexpr typename 
o3tl::typed_flags<E>::Wrap operator |(
 {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(lhs)));
+            o3tl::to_underlying(lhs)));
     return static_cast<typename o3tl::typed_flags<E>::Wrap>(
-        o3tl::underlyingEnumValue(lhs)
-        | o3tl::underlyingEnumValue<E>(rhs));
+        o3tl::to_underlying(lhs)
+        | o3tl::to_underlying<E>(rhs));
 }
 
 template<typename E> constexpr typename o3tl::typed_flags<E>::Wrap operator |(
@@ -236,10 +236,10 @@ template<typename E> constexpr typename 
o3tl::typed_flags<E>::Wrap operator |(
 {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(rhs)));
+            o3tl::to_underlying(rhs)));
     return static_cast<typename o3tl::typed_flags<E>::Wrap>(
-        o3tl::underlyingEnumValue<E>(lhs)
-        | o3tl::underlyingEnumValue(rhs));
+        o3tl::to_underlying<E>(lhs)
+        | o3tl::to_underlying(rhs));
 }
 
 template<typename W> constexpr
@@ -247,18 +247,18 @@ typename o3tl::typed_flags<typename 
W::Unwrapped::Self>::Wrap operator |(
     W lhs, W rhs)
 {
     return static_cast<W>(
-        o3tl::underlyingEnumValue<typename W::Unwrapped::Self>(lhs)
-        | o3tl::underlyingEnumValue<typename W::Unwrapped::Self>(rhs));
+        o3tl::to_underlying<typename W::Unwrapped::Self>(lhs)
+        | o3tl::to_underlying<typename W::Unwrapped::Self>(rhs));
 }
 
 template<typename E>
 inline typename o3tl::typed_flags<E>::Self operator &=(E & lhs, E rhs) {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(lhs)));
+            o3tl::to_underlying(lhs)));
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(rhs)));
+            o3tl::to_underlying(rhs)));
     lhs = lhs & rhs;
     return lhs;
 }
@@ -269,7 +269,7 @@ inline typename o3tl::typed_flags<E>::Self operator &=(
 {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(lhs)));
+            o3tl::to_underlying(lhs)));
     lhs = lhs & rhs;
     return lhs;
 }
@@ -278,10 +278,10 @@ template<typename E>
 inline typename o3tl::typed_flags<E>::Self operator |=(E & lhs, E rhs) {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(lhs)));
+            o3tl::to_underlying(lhs)));
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(rhs)));
+            o3tl::to_underlying(rhs)));
     lhs = lhs | rhs;
     return lhs;
 }
@@ -292,7 +292,7 @@ inline typename o3tl::typed_flags<E>::Self operator |=(
 {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(lhs)));
+            o3tl::to_underlying(lhs)));
     lhs = lhs | rhs;
     return lhs;
 }
@@ -301,10 +301,10 @@ template<typename E>
 inline typename o3tl::typed_flags<E>::Self operator ^=(E & lhs, E rhs) {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(lhs)));
+            o3tl::to_underlying(lhs)));
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(rhs)));
+            o3tl::to_underlying(rhs)));
     lhs = lhs ^ rhs;
     return lhs;
 }
@@ -315,7 +315,7 @@ inline typename o3tl::typed_flags<E>::Self operator ^=(
 {
     assert(
         o3tl::detail::isNonNegative(
-            o3tl::underlyingEnumValue(lhs)));
+            o3tl::to_underlying(lhs)));
     lhs = lhs ^ rhs;
     return lhs;
 }
diff --git a/include/o3tl/underlyingenumvalue.hxx 
b/include/o3tl/underlyingenumvalue.hxx
index 1684b2da17d9..a913ab385381 100644
--- a/include/o3tl/underlyingenumvalue.hxx
+++ b/include/o3tl/underlyingenumvalue.hxx
@@ -16,8 +16,9 @@
 
 namespace o3tl
 {
+// An implementation of C++23 std::to_underlying
 // For a value e of an enumeration type T, return the corresponding value of 
T's underlying type:
-template <typename T> constexpr std::underlying_type_t<T> 
underlyingEnumValue(T e)
+template <typename T> constexpr std::underlying_type_t<T> to_underlying(T e)
 {
     return static_cast<std::underlying_type_t<T>>(e);
 }
diff --git a/sc/inc/address.hxx b/sc/inc/address.hxx
index 56bd8d7f3e7d..dca071604627 100644
--- a/sc/inc/address.hxx
+++ b/sc/inc/address.hxx
@@ -182,11 +182,11 @@ namespace o3tl
 }
 inline void applyStartToEndFlags(ScRefFlags &target,const ScRefFlags source)
 {
-    target |= ScRefFlags(o3tl::underlyingEnumValue(source) << 4);
+    target |= ScRefFlags(o3tl::to_underlying(source) << 4);
 }
 inline void applyStartToEndFlags(ScRefFlags &target)
 {
-    target |= ScRefFlags(o3tl::underlyingEnumValue(target) << 4);
+    target |= ScRefFlags(o3tl::to_underlying(target) << 4);
 }
 
 //  ScAddress
diff --git a/sc/source/core/tool/address.cxx b/sc/source/core/tool/address.cxx
index c09628608bd2..d5a0bb29dca7 100644
--- a/sc/source/core/tool/address.cxx
+++ b/sc/source/core/tool/address.cxx
@@ -2232,7 +2232,7 @@ OUString ScRange::Format( const ScDocument& rDoc, 
ScRefFlags nFlags,
         {
             const ScDocument* pDoc = &rDoc;
             // move flags of end reference to start reference, mask with BITS 
to exclude FORCE_DOC flag
-            nFlags = ScRefFlags::VALID | 
(ScRefFlags(o3tl::underlyingEnumValue(nFlags) >> 4) & ScRefFlags::BITS);
+            nFlags = ScRefFlags::VALID | 
(ScRefFlags(o3tl::to_underlying(nFlags) >> 4) & ScRefFlags::BITS);
             if ( bOneTab )
                 pDoc = nullptr;
             else
diff --git a/sc/source/core/tool/reffind.cxx b/sc/source/core/tool/reffind.cxx
index 57e02f0a64cc..dab144437955 100644
--- a/sc/source/core/tool/reffind.cxx
+++ b/sc/source/core/tool/reffind.cxx
@@ -223,7 +223,7 @@ static ScRefFlags lcl_NextFlags( ScRefFlags nOld )
 {
     const ScRefFlags Mask_ABS = ScRefFlags::COL_ABS | ScRefFlags::ROW_ABS | 
ScRefFlags::TAB_ABS;
     ScRefFlags nNew = nOld & Mask_ABS;
-    nNew = ScRefFlags( o3tl::underlyingEnumValue(nNew) - 1 ) & Mask_ABS; // 
weiterzaehlen
+    nNew = ScRefFlags( o3tl::to_underlying(nNew) - 1 ) & Mask_ABS; // 
weiterzaehlen
 
     if (!(nOld & ScRefFlags::TAB_3D))
         nNew &= ~ScRefFlags::TAB_ABS; // not 3D -> never absolute!
diff --git a/vcl/source/animate/AnimationBitmap.cxx 
b/vcl/source/animate/AnimationBitmap.cxx
index 7ebaf98d9ec5..af4b1bb78556 100644
--- a/vcl/source/animate/AnimationBitmap.cxx
+++ b/vcl/source/animate/AnimationBitmap.cxx
@@ -41,7 +41,7 @@ BitmapChecksum AnimationBitmap::GetChecksum() const
     Int32ToSVBT32(mnWait, aBT32);
     nCrc = vcl_get_checksum(nCrc, aBT32, 4);
 
-    UInt32ToSVBT32(o3tl::underlyingEnumValue(meDisposal), aBT32);
+    UInt32ToSVBT32(o3tl::to_underlying(meDisposal), aBT32);
     nCrc = vcl_get_checksum(nCrc, aBT32, 4);
 
     UInt32ToSVBT32(sal_uInt32(mbUserInput), aBT32);
diff --git a/xmlsecurity/qa/unit/signing/signing.cxx 
b/xmlsecurity/qa/unit/signing/signing.cxx
index de54150d2108..38643a0b3098 100644
--- a/xmlsecurity/qa/unit/signing/signing.cxx
+++ b/xmlsecurity/qa/unit/signing/signing.cxx
@@ -496,7 +496,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, testODFGood)
     // We expect NOTVALIDATED in case the root CA is not imported on the 
system, and OK otherwise, so accept both.
     SignatureState nActual = pObjectShell->GetDocumentSignatureState();
     CPPUNIT_ASSERT_MESSAGE(
-        (OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+        (OString::number(o3tl::to_underlying(nActual)).getStr()),
         (nActual == SignatureState::NOTVALIDATED || nActual == 
SignatureState::OK));
 }
 
@@ -535,7 +535,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, testODFUnsignedTimestamp)
     CPPUNIT_ASSERT(pObjectShell);
     SignatureState nActual = pObjectShell->GetDocumentSignatureState();
     CPPUNIT_ASSERT_MESSAGE(
-        (OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+        (OString::number(o3tl::to_underlying(nActual)).getStr()),
         (nActual == SignatureState::NOTVALIDATED || nActual == 
SignatureState::OK));
     uno::Sequence<security::DocumentSignatureInformation> const infos(
         pObjectShell->GetDocumentSignatureInformation(false));
@@ -561,7 +561,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, 
aaa_testODFX509CertificateChain)
     CPPUNIT_ASSERT(pObjectShell);
     SignatureState nActual = pObjectShell->GetDocumentSignatureState();
     CPPUNIT_ASSERT_MESSAGE(
-        (OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+        (OString::number(o3tl::to_underlying(nActual)).getStr()),
         (nActual == SignatureState::NOTVALIDATED || nActual == 
SignatureState::OK));
     uno::Sequence<security::DocumentSignatureInformation> const infos(
         pObjectShell->GetDocumentSignatureInformation(false));
@@ -585,7 +585,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, testODFDoubleX509Data)
     CPPUNIT_ASSERT(pObjectShell);
     SignatureState nActual = pObjectShell->GetDocumentSignatureState();
     CPPUNIT_ASSERT_MESSAGE(
-        (OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+        (OString::number(o3tl::to_underlying(nActual)).getStr()),
         (nActual == SignatureState::NOTVALIDATED || nActual == 
SignatureState::OK));
     uno::Sequence<security::DocumentSignatureInformation> const infos(
         pObjectShell->GetDocumentSignatureInformation(false));
@@ -606,7 +606,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, testODFTripleX509Data)
     CPPUNIT_ASSERT(pObjectShell);
     SignatureState nActual = pObjectShell->GetDocumentSignatureState();
     // here, libxmlsec will pick the 1st X509Data but signing key is the 2nd
-    
CPPUNIT_ASSERT_EQUAL_MESSAGE((OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+    
CPPUNIT_ASSERT_EQUAL_MESSAGE((OString::number(o3tl::to_underlying(nActual)).getStr()),
                                  SignatureState::BROKEN, nActual);
     uno::Sequence<security::DocumentSignatureInformation> const infos(
         pObjectShell->GetDocumentSignatureInformation(false));
@@ -627,7 +627,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, 
testODFMacroDoubleX509Data)
     CPPUNIT_ASSERT(pObjectShell);
     SignatureState nActual = pObjectShell->GetScriptingSignatureState();
     CPPUNIT_ASSERT_MESSAGE(
-        (OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+        (OString::number(o3tl::to_underlying(nActual)).getStr()),
         (nActual == SignatureState::NOTVALIDATED || nActual == 
SignatureState::OK));
     uno::Sequence<security::DocumentSignatureInformation> const infos(
         pObjectShell->GetDocumentSignatureInformation(true));
@@ -655,7 +655,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, 
testODFDoubleX509Certificate)
                       || nActual == SignatureState::BROKEN
 #endif
                       ));
-    
CPPUNIT_ASSERT_MESSAGE((OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
 nTemp);
+    
CPPUNIT_ASSERT_MESSAGE((OString::number(o3tl::to_underlying(nActual)).getStr()),
 nTemp);
     uno::Sequence<security::DocumentSignatureInformation> const infos(
         pObjectShell->GetDocumentSignatureInformation(false));
     CPPUNIT_ASSERT_EQUAL(sal_Int32(1), infos.getLength());
@@ -692,7 +692,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, testOOXMLPartial)
     // We expect NOTVALIDATED_PARTIAL_OK in case the root CA is not imported 
on the system, and PARTIAL_OK otherwise, so accept both.
     // But reject NOTVALIDATED, hiding incompleteness is not OK.
     SignatureState nActual = pObjectShell->GetDocumentSignatureState();
-    
CPPUNIT_ASSERT_MESSAGE((OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+    
CPPUNIT_ASSERT_MESSAGE((OString::number(o3tl::to_underlying(nActual)).getStr()),
                            (nActual == SignatureState::NOTVALIDATED_PARTIAL_OK
                             || nActual == SignatureState::PARTIAL_OK));
 }
@@ -729,7 +729,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, testPDFGood)
     }
 
     CPPUNIT_ASSERT_MESSAGE(
-        (OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+        (OString::number(o3tl::to_underlying(nActual)).getStr()),
         (nActual == SignatureState::NOTVALIDATED || nActual == 
SignatureState::OK));
 }
 
@@ -868,7 +868,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, test96097Calc)
     CPPUNIT_ASSERT_MESSAGE("Failed to access document shell", pObjectShell);
 
     SignatureState nActual = pObjectShell->GetScriptingSignatureState();
-    
CPPUNIT_ASSERT_MESSAGE((OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+    
CPPUNIT_ASSERT_MESSAGE((OString::number(o3tl::to_underlying(nActual)).getStr()),
                            (nActual == SignatureState::OK || nActual == 
SignatureState::NOTVALIDATED
                             || nActual == SignatureState::INVALID));
 
@@ -905,7 +905,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, test96097Doc)
     CPPUNIT_ASSERT(pObjectShell);
 
     SignatureState nActual = pObjectShell->GetScriptingSignatureState();
-    
CPPUNIT_ASSERT_MESSAGE((OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+    
CPPUNIT_ASSERT_MESSAGE((OString::number(o3tl::to_underlying(nActual)).getStr()),
                            (nActual == SignatureState::OK || nActual == 
SignatureState::NOTVALIDATED
                             || nActual == SignatureState::INVALID));
 
@@ -1216,7 +1216,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, testXAdESGood)
     // We expect NOTVALIDATED in case the root CA is not imported on the 
system, and OK otherwise, so accept both.
     SignatureState nActual = pObjectShell->GetDocumentSignatureState();
     CPPUNIT_ASSERT_MESSAGE(
-        (OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+        (OString::number(o3tl::to_underlying(nActual)).getStr()),
         (nActual == SignatureState::NOTVALIDATED || nActual == 
SignatureState::OK));
 }
 
@@ -1281,7 +1281,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, testODFGoodGPG)
     // Our local gpg config fully trusts the signing cert, so in
     // contrast to the X509 test we can fail on NOTVALIDATED here
     SignatureState nActual = pObjectShell->GetDocumentSignatureState();
-    
CPPUNIT_ASSERT_EQUAL_MESSAGE((OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+    
CPPUNIT_ASSERT_EQUAL_MESSAGE((OString::number(o3tl::to_underlying(nActual)).getStr()),
                                  SignatureState::OK, nActual);
 }
 
@@ -1297,7 +1297,7 @@ CPPUNIT_TEST_FIXTURE(SigningTest, testODFUntrustedGoodGPG)
     // contrast to the X509 test we can fail everything but
     // NOTVALIDATED here
     SignatureState nActual = pObjectShell->GetDocumentSignatureState();
-    
CPPUNIT_ASSERT_EQUAL_MESSAGE((OString::number(o3tl::underlyingEnumValue(nActual)).getStr()),
+    
CPPUNIT_ASSERT_EQUAL_MESSAGE((OString::number(o3tl::to_underlying(nActual)).getStr()),
                                  SignatureState::NOTVALIDATED, nActual);
 }
 

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