[Bug target/78246] New: Incorrect vector variable set but not used warning
zoltan at hidvegi dot com
gcc-bugzilla@gcc.gnu.org
Tue Nov 8 00:26:00 GMT 2016
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78246
Bug ID: 78246
Summary: Incorrect vector variable set but not used warning
Product: gcc
Version: 6.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zoltan at hidvegi dot com
Target Milestone: ---
Negating a vector variable can cause incorrect unused variable warning. This
happens both on x86 and PowerPC. Compile with g++ -O2 -S -Wall warning_test.C
Interestingly, compiling this as a C program, the warning disappears. This
happens with compiles as old as gcc-4.8 or as new as gcc-6.2
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