expr is now cast to void in THROWS family of assertions.

This prevents Clang from complaining about unused value in expressions
containing explicit casts used in the THROW assertion macro family.

Example:
`REQUIRE_THROWS_AS(static_cast<bool>(object), std::bad_cast);` would
trigger `-Wunused-value` warning. Now it does not.

Credits to Arto Bendiken, who submitted a PR almost 3 years ago, but his
branch has since died and I was unable to merge it.
This commit is contained in:
Martin Hořeňovský 2017-01-31 18:02:11 +01:00
parent 7ae96c710b
commit 0dabd951ba

View File

@ -58,7 +58,7 @@
do { \
Catch::ResultBuilder __catchResult( macroName, CATCH_INTERNAL_LINEINFO, #expr, resultDisposition ); \
try { \
expr; \
static_cast<void>(expr); \
__catchResult.captureResult( Catch::ResultWas::Ok ); \
} \
catch( ... ) { \
@ -73,7 +73,7 @@
Catch::ResultBuilder __catchResult( macroName, CATCH_INTERNAL_LINEINFO, #expr, resultDisposition, #matcher ); \
if( __catchResult.allowThrows() ) \
try { \
expr; \
static_cast<void>(expr); \
__catchResult.captureResult( Catch::ResultWas::DidntThrowException ); \
} \
catch( ... ) { \
@ -90,7 +90,7 @@
Catch::ResultBuilder __catchResult( macroName, CATCH_INTERNAL_LINEINFO, #expr, resultDisposition ); \
if( __catchResult.allowThrows() ) \
try { \
expr; \
static_cast<void>(expr); \
__catchResult.captureResult( Catch::ResultWas::DidntThrowException ); \
} \
catch( exceptionType ) { \