http://llvm.org/bugs/show_bug.cgi?id=14804
Bug #: 14804
Summary: Spurious unused expression warning
Product: clang
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Created attachment 9807
--> http://llvm.org/bugs/attachment.cgi?id=9807
Test to reproduce a spurious unused expression warning on templated classes.
Similar to bug 8806, but I think this one is valid.
I have a templated code that is giving me an "expression result unused"
warning, thinking that an argument list is a comma expression.
Attached is the code, which is highly stripped down from a widely-used
production code (http://www.openvdb.org/).
Compile as:
> clang++ -c bogus_unused_expr_warn.cc
If I do either of the things below, the warning goes away, leading me to think
that there's an error in the unused result detection heuristic:
a) Remove the "bool Root=false" from the Item class's template parameter list.
b) Change the Item::probe function to a non-templated function.
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