gcc-9 warns on taking the address of an unaligned member in a packed
structure. This structure does not need to be packed. Remove
__attribute__((packed)) and fix the code to implement I/O correctly
without packing.
For each link given as http://, verify that the site is accessible over
https:// and, if so, switch to it. These domains were converted:
* llvm.org
* clang.llvm.org
* en.cppreference.com
* www.dxx-rebirth.com
* www.libsdl.org
* www.scons.org
digi_play_sample_once is supposed to cancel prior instances of the
sound, but that functionality was lost in
21082c6db2. As a result, the sound can be
stacked up to the limit of the engine. Even when the functionality
existed, its implementation was wrong.
- Change these sounds to be attached to the player generating them.
- Pass the cancellation flag to other players when sending a sound.
- Send the full value of `volume`, rather than truncating it.
- Implement cancellation by killing and restarting the earlier version of a cancelled sound.
- Delete an ugly hack that prevented the patched logic from ever running.
- Fix an ancient quirk in digi_mixer that caused it to report all sounds as not playing, which then caused digi_sync_sounds to instantly cancel the new sound.
Reported-by: Mako88 <https://github.com/dxx-rebirth/dxx-rebirth/issues/88>
Reported-by: ryusei117 <https://github.com/dxx-rebirth/dxx-rebirth/issues/88#issuecomment-269597361>
Fixes: 21082c6db2 ("Added own channel management to SDL_mixer sound interface since the builtin channel management of this lib cannot handle our needs; Little code cleanup")
Packed structures cannot be passed by reference, may fail on
alignment-strict architectures, and are bad for performance even on
alignment-tolerant architectures. Using them for anything other than an
abstract layout declaration is a mistake. Remove
__attribute__((packed)).
Delete stub "compiler-type_traits.h" header. Redirect all uses to the
standard <type_traits> header.
git grep -wlz 'compiler-type_traits.h' -- '*.cpp' '*.h' | xargs -0 perl -p -i <<EOF
BEGIN {
$i = 0;
}
if (($i == 1 && $_ eq "\n") || ($i < 2 && /^#include "/)) {
# First blank line or first user-include after a system-include.
# Print, then never again for this file.
print "#include <type_traits>\n";
$i = 2;
} elsif ($i == 0) {
$i = 1 if (/^#include </);
} elsif ($_ eq "#include \"compiler-type_traits.h\"\n") {
# Remove this line if found.
$_ = '';
}
# Reset state machine when moving to next file.
$i = 0 if eof;
EOF
All supported compilers have an acceptable <type_traits>. Commit
4cb3d46148 ("Move <type_traits> test to Cxx11RequiredFeature") made
<type_traits> support mandatory in August and no one has objected.
Remove the indirection and use namespace std directly for type_traits
members.
