Developer Guide and Reference

Contents

Wreturn-type

Determines whether warnings are issued when a function is declared without a return type, when the definition of a function returning void contains a return statement with an expression, or when the closing brace of a function returning non-void is reached.

Syntax

Linux:
-Wreturn-type
-Wno-return-type
macOS:
-Wreturn-type
-Wno-return-type
Windows:
None
Arguments
None
Default
ON for one condition
A warning is issued when the closing brace of a function returning non-void is reached.
Description
This option determines whether warnings are issued for the following:
  • When a function is declared without a return type
  • When the definition of a function returning void contains a return statement with an expression
  • When the closing brace of a function returning non-void is reached
Specify
-Wno-return-type
if you do not want to see warnings about the above diagnostics.
Alternate Options
None

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804