More warning fixes iG-API on Windows.

asmorkalov · GitOps Bot · commit 533631d2b16c · 2025-10-17T00:21:42.000Z
diff --git a/modules/gapi/src/backends/common/serialization.cpp b/modules/gapi/src/backends/common/serialization.cpp
@@ -393,10 +393,9 @@ IOStream& operator<< (IOStream& os, const cv::GArrayDesc &) {return os;}
 IIStream& operator>> (IIStream& is,       cv::GArrayDesc &) {return is;}
 
 #if !defined(GAPI_STANDALONE)
-IOStream& operator<< (IOStream& os, const cv::UMat &)
+IOStream& operator<< (IOStream&, const cv::UMat &)
 {
     GAPI_Error("Serialization: Unsupported << for UMat");
-    return os;
 }
 IIStream& operator >> (IIStream&, cv::UMat &)
 {
diff --git a/modules/gapi/src/compiler/gcompiler.cpp b/modules/gapi/src/compiler/gcompiler.cpp
@@ -341,7 +341,6 @@ void cv::gimpl::GCompiler::validateInputMeta()
         default:
             GAPI_Error("InternalError");
         }
-        return false; // should never happen
     };
 
     GAPI_LOG_DEBUG(nullptr, "Total count: " << m_metas.size());

Original file line number	Diff line number	Diff line change
`@@ -393,10 +393,9 @@ IOStream& operator<< (IOStream& os, const cv::GArrayDesc &) {return os;}`
`393`	`393`	`IIStream& operator>> (IIStream& is, cv::GArrayDesc &) {return is;}`
`394`	`394`
`395`	`395`	`#if !defined(GAPI_STANDALONE)`
`396`		`-IOStream& operator<< (IOStream& os, const cv::UMat &)`
	`396`	`+IOStream& operator<< (IOStream&, const cv::UMat &)`
`397`	`397`	`{`
`398`	`398`	`GAPI_Error("Serialization: Unsupported << for UMat");`
`399`		`- return os;`
`400`	`399`	`}`
`401`	`400`	`IIStream& operator >> (IIStream&, cv::UMat &)`
`402`	`401`	`{`
Original file line number	Diff line number	Diff line change
`@@ -341,7 +341,6 @@ void cv::gimpl::GCompiler::validateInputMeta()`
`341`	`341`	`default:`
`342`	`342`	`GAPI_Error("InternalError");`
`343`	`343`	`}`
`344`		`- return false; // should never happen`
`345`	`344`	`};`
`346`	`345`
`347`	`346`	`GAPI_LOG_DEBUG(nullptr, "Total count: " << m_metas.size());`