From c3291233c4d384ec9642b1ccc368cfb9411e18db Mon Sep 17 00:00:00 2001
From: Jeff Genovy <jefgen@microsoft.com>
Date: Tue, 8 Jan 2019 17:56:40 -0800
Subject: [PATCH] ICU-20325 Fix warnings about unknown pragma when building
 with GCC in MSYS2 (Windows).

---
 icu4c/source/i18n/erarules.h               | 2 ++
 icu4c/source/i18n/number_decimfmtprops.h   | 2 ++
 icu4c/source/i18n/number_patternmodifier.h | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/icu4c/source/i18n/erarules.h b/icu4c/source/i18n/erarules.h
index 4ed86408325..8324b4c0df4 100644
--- a/icu4c/source/i18n/erarules.h
+++ b/icu4c/source/i18n/erarules.h
@@ -18,8 +18,10 @@ U_NAMESPACE_BEGIN
 // When building DLLs for Windows this is required even though no direct access leaks out of the i18n library.
 // See digitlst.h, pluralaffix.h, datefmt.h, and others for similar examples.
 #if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
+#if defined(_MSC_VER)
 // Ignore warning 4661 as LocalPointerBase does not use operator== or operator!=
 #pragma warning(suppress: 4661)
+#endif
 template class U_I18N_API LocalPointerBase<int32_t>;
 template class U_I18N_API LocalMemory<int32_t>;
 #endif
diff --git a/icu4c/source/i18n/number_decimfmtprops.h b/icu4c/source/i18n/number_decimfmtprops.h
index f288b6e0d97..4819cbd9247 100644
--- a/icu4c/source/i18n/number_decimfmtprops.h
+++ b/icu4c/source/i18n/number_decimfmtprops.h
@@ -21,8 +21,10 @@ U_NAMESPACE_BEGIN
 // data member of CurrencyPluralInfoWrapper.
 // (When building DLLs for Windows this is required.)
 #if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
+#if defined(_MSC_VER)
 // Ignore warning 4661 as LocalPointerBase does not use operator== or operator!=
 #pragma warning(suppress: 4661)
+#endif
 template class U_I18N_API LocalPointerBase<CurrencyPluralInfo>;
 template class U_I18N_API LocalPointer<CurrencyPluralInfo>;
 #endif
diff --git a/icu4c/source/i18n/number_patternmodifier.h b/icu4c/source/i18n/number_patternmodifier.h
index 9e6e33fccae..89c5457c67b 100644
--- a/icu4c/source/i18n/number_patternmodifier.h
+++ b/icu4c/source/i18n/number_patternmodifier.h
@@ -21,8 +21,10 @@ U_NAMESPACE_BEGIN
 // data member of AdoptingModifierStore.
 // (When building DLLs for Windows this is required.)
 #if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
+#if defined(_MSC_VER)
 // Ignore warning 4661 as LocalPointerBase does not use operator== or operator!=
 #pragma warning(suppress: 4661)
+#endif
 template class U_I18N_API LocalPointerBase<number::impl::AdoptingModifierStore>;
 template class U_I18N_API LocalPointer<number::impl::AdoptingModifierStore>;
 #endif