r259901 - in /trunk/libstdc++-v3: ChangeLog src...

[redi@gcc.gnu.org]

Author: redi
Date: Thu May  3 18:58:00 2018
New Revision: 259901

URL: https://gcc.gnu.org/viewcvs?rev=259901&root=gcc&view=rev
Log:
PR libstdc++/85632 fix wraparound in filesystem::space

On 32-bit targets any values over 4GB would wrap and produce the wrong
result.

	PR libstdc++/85632 use uintmax_t for arithmetic
	* src/filesystem/ops.cc (experimental::filesystem::space): Perform
	arithmetic in result type.
	* src/filesystem/std-ops.cc (filesystem::space): Likewise.
	* testsuite/27_io/filesystem/operations/space.cc: Check total capacity
	is greater than free space.
	* testsuite/experimental/filesystem/operations/space.cc: New.

Added:
    trunk/libstdc++-v3/testsuite/experimental/filesystem/operations/space.cc
      - copied, changed from r259900, trunk/libstdc++-v3/testsuite/27_io/filesystem/operations/space.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/src/filesystem/ops.cc
    trunk/libstdc++-v3/src/filesystem/std-ops.cc
    trunk/libstdc++-v3/testsuite/27_io/filesystem/operations/space.cc