fix unsilenceable warnings on GCC 9 (#41)
See issue https://github.com/rust-lang/rust/issues/69078 for details
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[cmake] Disable GCC 9's -Winit-list-lifetime warning in ArrayRef
Summary:
This is a new warning which fires when one stores a reference to the
initializer_list contents in a way which may outlive the
initializer_list which it came from. In llvm this warning is triggered
whenever someone uses the initializer_list ArrayRef constructor.
This is indeed a dangerous thing to do (I myself was bitten by that at
least once), but it is not more dangerous than calling other ArrayRef
constructors with temporary objects -- something which we are used to
and have accepted as a tradeoff for ArrayRef's efficiency.
Currently, this warnings generates so much output that it completely
obscures any actionable warnings, so this patch disables it.
Reviewers: rnk, aaron.ballman
Subscribers: mgorny, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D70122
(cherry picked from commit 6c2151bf4c829958891e65a4cc396daa6d308eb0)
Co-authored-by: Pavel Labath <pavel@labath.sk>
1 file changed
