Bug 1596807 - turn off more exception spec mismatch warnings on Windows; r=dmajor

Differential Revision: https://phabricator.services.mozilla.com/D53218

--HG--
extra : moz-landing-system : lando

js/src/old-configure.in

@@ -631,6 +631,10 @@ case "$target" in
             # declare |delete| differently.  Therefore, suppress this
             # warning.
             CXXFLAGS="$CXXFLAGS -Wno-implicit-exception-spec-mismatch"
+            # Macros like STDMETHOD() and IFACEMETHOD() can declare
+            # __attribute__((nothrow)) on their respective method declarations,
+            # while the definitions are left without the matching attribute.
+            CXXFLAGS="$CXXFLAGS -Wno-microsoft-exception-spec"
             # At least one MSVC header and several headers in-tree have
             # unused typedefs, so turn this on.
             CXXFLAGS="$CXXFLAGS -Wno-unused-local-typedef"

old-configure.in

@@ -762,6 +762,10 @@ case "$target" in
             # declare |delete| differently.  Therefore, suppress this
             # warning.
             CXXFLAGS="$CXXFLAGS -Wno-implicit-exception-spec-mismatch"
+            # Macros like STDMETHOD() and IFACEMETHOD() can declare
+            # __attribute__((nothrow)) on their respective method declarations,
+            # while the definitions are left without the matching attribute.
+            CXXFLAGS="$CXXFLAGS -Wno-microsoft-exception-spec"
             # At least one MSVC header and several headers in-tree have
             # unused typedefs, so turn this on.
             CXXFLAGS="$CXXFLAGS -Wno-unused-local-typedef"