tree fb7f054e6b4731f8dce6dc37f10016513dce2d38
parent 9ec4f7e44a2a28168052d052ffb621b9cefaee41
author Sergiu Deitsch <sergiu.deitsch@gmail.com> 1660474185 +0200
committer Sameer Agarwal <sameeragarwal@google.com> 1660684992 +0000

Fix GCC 12.1.1 LTO -Walloc-size-larger-than= warnings

With -flto=auto, GCC emits multiple warnings in release builds such as

In function ‘make_unique’,
    inlined from ‘Create’ at ceres-solver/internal/ceres/scratch_evaluate_preparer.cc:43:75,
    inlined from ‘CreateEvaluatePreparers’ at ceres-solver/internal/ceres/compressed_row_jacobian_writer.h:95:66,
    inlined from ‘__ct ’ at ceres-solver/internal/ceres/program_evaluator.h:120:9,
    inlined from ‘Evaluate.constprop.isra’ at ceres-solver/internal/ceres/problem_impl.cc:695:65:
/usr/include/c++/12.1.1/bits/unique_ptr.h:1080:30: warning: argument 1 value ‘18446744073709551615’ exceeds maximum object size 9223372036854775807 [-Walloc-size-larger-than=]
 1080 |     { return unique_ptr<_Tp>(new remove_extent_t<_Tp>[__num]()); }
      |                              ^

because a signed integer is used to specify the size of allocated arrays
instead of the expected unsigned (specifically, std::size_t) without
checking for negative values at the call site.

Change-Id: I923b1d074241535426bfea041568ef1dc7f3ec86