Can be invariant because it's not quoted.

cincuranet · cincuranet · commit 45724cccecd3 · 2018-11-01T09:06:52.000+01:00
diff --git a/Provider/src/FirebirdSql.Data.FirebirdClient/FirebirdClient/FbCommandBuilder.cs b/Provider/src/FirebirdSql.Data.FirebirdClient/FirebirdClient/FbCommandBuilder.cs
@@ -48,7 +48,7 @@ public static void DeriveParameters(FbCommand command)
 			}
 			else
 			{
-				spName = spName.ToUpper(CultureInfo.CurrentCulture);
+				spName = spName.ToUpperInvariant();
 			}
 
 			var paramsText = string.Empty;

Original file line number	Diff line number	Diff line change
`@@ -48,7 +48,7 @@ public static void DeriveParameters(FbCommand command)`
`48`	`48`	`}`
`49`	`49`	`else`
`50`	`50`	`{`
`51`		`- spName = spName.ToUpper(CultureInfo.CurrentCulture);`
	`51`	`+ spName = spName.ToUpperInvariant();`
`52`	`52`	`}`
`53`	`53`
`54`	`54`	`var paramsText = string.Empty;`