option ‘-Wimplicit’ is valid for C/ObjC but not for C++
option ‘-Wimplicit-function-declaration’ is valid for C/ObjC but not for C++
option ‘-Wimplicit-int’ is valid for C/ObjC but not for C++
option ‘-Wmissing-prototypes’ is valid for C/ObjC but not for C++
option ‘-Wmissing-parameter-type’ is valid for C/ObjC but not for C++
option ‘-Wold-style-definition’ is valid for C/ObjC but not for C++
option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
../win/Qt/qt_yndlg.cpp: In member function ‘char nethack_qt_::NetHackQtYnDialog::Exec()’:
../win/Qt/qt_yndlg.cpp:80:9: warning: variable ‘ch_per_line’ set but not used [-Wunused-but-set-variable]
80 | int ch_per_line=6;
| ^~~~~~~~~~~
We have a struct called mkroom and a function called mkroom()
so c++ complains about the mkroom() function hiding the
initializer for the struct.
Similarly, we have a struct called attack and a function
called attack().
There may be a more elegant way of eliminating those two
warnings, but renaming mkroom() to do_mkroom() and
attack() to do_attack() was straightforward enough.
Whitelist all the verified existing triggers:
makedefs.c: In function ‘name_file’
attrib.c: one compiler balks at a ? b : c for fmtstring
cmd.c: In function ‘extcmd_via_menu’
cmd.c: In function ‘wiz_levltyp_legend’
do.c: In function ‘goto_level’
do_name.c: In function ‘coord_desc’
dungeon.c: In function ‘overview_stats’
eat.c: one compiler balks at a ? b : c for fmtstring
end.c: one compiler balks at a ? b : c for fmtstring
engrave.c: In function ‘engr_stats’
hack:c one compiler balks at a ? b : c for fmtstring
hacklib.c: one compiler balks at a ? b : c for fmtstring
insight.c: one compiler balks at a ? b : c for fmtstring
invent.c: In function ‘let_to_name’
light.c: In function ‘light_stats’
mhitm.c: In function ‘missmm’
options.c: In function ‘handler_symset’
options.c: In function ‘basic_menu_colors’
options.c: In function ‘optfn_o_autopickup_exceptions’
options.c: In function ‘optfn_o_menu_colors’
options.c: In function ‘optfn_o_message_types’
options.c: In function ‘optfn_o_status_cond’
options.c: In function ‘optfn_o_status_hilites’
options.c: In function ‘doset’
options.c: In function ‘doset_add_menu’
options.c: In function ‘show_menu_controls’
options.c: In function ‘handle_add_list_remove’
pager.c: In function ‘do_supplemental_info’
pager.c: In function ‘dohelp’
region.c: In function ‘region_stats’
rumors.c: sscanf usage
sounds.c: In function ‘domonnoise’
spell.c: In function ‘dospellmenu’
timeout.c: In function ‘timer_stats’
topten.c: In function ‘outentry’, fscanf, sscanf, fprintf usage
windows.c: In function ‘genl_status_update’
zap.c: one compiler balks at a ? b : c for fmtstring
win/curses/cursstat.c: In function ‘curses_status_update’
win/tty/wintty.c: In function ‘tty_status_update’
win/win32/mswproc.c: In function ‘mswin_status_update’
sounds.c: In function ‘add_sound_mapping’:
sounds.c:1381:33: warning: ‘sprintf’ may write a terminating nul past the end of the destination [-Wformat-overflow=]
1381 | Sprintf(filespec, "%s/%s", sounddir, filename);
| ^
In file included from ../include/config.h:631,
from ../include/hack.h:10,
from sounds.c:5:
../include/global.h:274:24: note: ‘sprintf’ output 2 or more bytes (assuming 257) into a destination of size 256
274 | #define Sprintf (void) sprintf
sounds.c:1381:9: note: in expansion of macro ‘Sprintf’
1381 | Sprintf(filespec, "%s/%s", sounddir, filename);
| ^~~~~~~
clear some -Wformat-overflow warnings being experienced with
i586-pc-msdosdjgpp-gcc (GCC) 10.2.0 cross-compiler
--
Warnings log:
botl.c: In function 'status_hilite_menu_add':
botl.c:3661:38: warning: ' or ' directive writing 4 bytes into a region of size between 1 and 80 [-Wformat-overflow=]
3661 | Sprintf(obuf, "%s or %s",
| ^~~~
In file included from ../include/config.h:631,
from ../include/hack.h:10,
from botl.c:6:
../include/global.h:274:24: note: 'sprintf' output between 5 and 163 bytes into a destination of size 80
274 | #define Sprintf (void) sprintf
botl.c:3661:21: note: in expansion of macro 'Sprintf'
3661 | Sprintf(obuf, "%s or %s",
| ^~~~~~~
do_name.c: In function 'getpos_menu':
do_name.c:594:37: warning: 'sprintf' may write a terminating nul past the end of the destination [-Wformat-overflow=]
594 | Sprintf(fullbuf, "%s%s%s", firstmatch,
| ^
In file included from ../include/config.h:631,
from ../include/hack.h:10,
from do_name.c:6:
../include/global.h:274:24: note: 'sprintf' output 1 or more bytes (assuming 257) into a destination of size 256
274 | #define Sprintf (void) sprintf
do_name.c:594:13: note: in expansion of macro 'Sprintf'
594 | Sprintf(fullbuf, "%s%s%s", firstmatch,
| ^~~~~~~
dungeon.c: In function 'print_dungeon':
dungeon.c:2172:27: warning: '%s' directive writing up to 1407 bytes into a region of size 256 [-Wformat-overflow=]
2172 | Sprintf(buf, "%s: %s %d", dptr->dname, descr, dptr->depth_start);
| ^~
In file included from ../include/config.h:631,
from ../include/hack.h:10,
from dungeon.c:6:
../include/global.h:274:24: note: 'sprintf' output between 10 and 1427 bytes into a destination of size 256
274 | #define Sprintf (void) sprintf
dungeon.c:2172:13: note: in expansion of macro 'Sprintf'
2172 | Sprintf(buf, "%s: %s %d", dptr->dname, descr, dptr->depth_start);
| ^~~~~~~
dungeon.c:2169:27: warning: '%s' directive writing up to 1407 bytes into a region of size 256 [-Wformat-overflow=]
2169 | Sprintf(buf, "%s: %s %d to %d", dptr->dname, makeplural(descr),
| ^~
dungeon.c:2169:26: note: directive argument in the range [-2147483647, 2147483646]
2169 | Sprintf(buf, "%s: %s %d to %d", dptr->dname, makeplural(descr),
| ^~~~~~~~~~~~~~~~~
In file included from ../include/config.h:631,
from ../include/hack.h:10,
from dungeon.c:6:
../include/global.h:274:24: note: 'sprintf' output 10 or more bytes (assuming 1427) into a destination of size 256
274 | #define Sprintf (void) sprintf
dungeon.c:2169:13: note: in expansion of macro 'Sprintf'
2169 | Sprintf(buf, "%s: %s %d to %d", dptr->dname, makeplural(descr),
| ^~~~~~~
dungeon.c: In function 'print_mapseen':
dungeon.c:3185:33: warning: '%s' directive writing up to 255 bytes into a region of size 249 [-Wformat-overflow=]
3185 | Sprintf(outbuf, " (play %s to open or close drawbridge)", tmp);
| ^~ ~~~
In file included from ../include/config.h:631,
from ../include/hack.h:10,
from dungeon.c:6:
../include/global.h:274:24: note: 'sprintf' output between 37 and 292 bytes into a destination of size 256
274 | #define Sprintf (void) sprintf
dungeon.c:3185:9: note: in expansion of macro 'Sprintf'
3185 | Sprintf(outbuf, " (play %s to open or close drawbridge)", tmp);
| ^~~~~~~
dungeon.c:3350:35: warning: '%s' directive writing up to 255 bytes into a region of size 240 [-Wformat-overflow=]
3350 | Sprintf(buf, "%sThe castle%s.", PREFIX, tunesuffix(mptr, tmpbuf));
| ^~
In file included from ../include/config.h:631,
from ../include/hack.h:10,
from dungeon.c:6:
../include/global.h:274:24: note: 'sprintf' output between 18 and 273 bytes into a destination of size 256
274 | #define Sprintf (void) sprintf
dungeon.c:3350:9: note: in expansion of macro 'Sprintf'
3350 | Sprintf(buf, "%sThe castle%s.", PREFIX, tunesuffix(mptr, tmpbuf));
| ^~~~~~~
explode.c:541:69: warning: '%s' directive writing up to 255 bytes into a region of size 236 [-Wformat-overflow=]
541 | Sprintf(g.killer.name, "caught %sself in %s own %s", uhim(),
| ^~
In file included from ../include/config.h:631,
from ../include/hack.h:10,
from explode.c:5:
../include/global.h:274:24: note: 'sprintf' output 21 or more bytes (assuming 276) into a destination of size 256
274 | #define Sprintf (void) sprintf
explode.c:541:21: note: in expansion of macro 'Sprintf'
541 | Sprintf(g.killer.name, "caught %sself in %s own %s", uhim(),
| ^~~~~~~
hacklib.c: In function 'yyyymmddhhmmss':
hacklib.c:1034:28: warning: '%02d' directive writing between 2 and 11 bytes into a region of size between 4 and 11 [-Wformat-overflow=]
1034 | Sprintf(datestr, "%04ld%02d%02d%02d%02d%02d", datenum, lt->tm_mon + 1,
| ^~~~
hacklib.c:1034:22: note: directive argument in the range [-2147483647, 2147483647]
1034 | Sprintf(datestr, "%04ld%02d%02d%02d%02d%02d", datenum, lt->tm_mon + 1,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../include/config.h:631,
from ../include/hack.h:10,
from hacklib.c:7:
../include/global.h:274:24: note: 'sprintf' output between 15 and 67 bytes into a destination of size 15
274 | #define Sprintf (void) sprintf
hacklib.c:1034:5: note: in expansion of macro 'Sprintf'
1034 | Sprintf(datestr, "%04ld%02d%02d%02d%02d%02d", datenum, lt->tm_mon + 1,
| ^~~~~~~
It turns out that macOS barked when a POP was issued without
a prior PUSH, so since the DISABLE_WARNING_CONDEXPR_IS_CONSTANT
expanded to an empty macro on that platform.
Include a corresponding
RESTORE_WARNING_CONDEXPR_IS_CONSTANT macro for use with that
particular warning.
Microsoft and other non-GNU compilers don't recognize gcc tricks
like /*NOTREACHED*/ to suppress individual warnings. clang recognizes most
of them because it tries to be gcc-compatible. Because of that, a lot of
potentially useful warnings have had to be completely suppressed in the
past in all source files when using the non-gcc compatible compilers.
Now that the code is C99, take advantage of a way to suppress warnings for
individual functions, a big step up from suppressing the warnings
altogether.
Unfortunately, it does require a bit of ugliness caused by the
insertion of some macros in a few spots, but I'm not aware of
a cleaner alternative that still allows warnings to be enabled
in general, while suppressing a warning for known white-listed
instances.
Prior to the warning-tiggering function, place whichever one of
the following is needed to suppress the warning being encountered:
DISABLE_WARNING_UNREACHABLE_CODE
DISABLE_WARNING_CONDEXPR_IS_CONSTANT
After the warning-triggering function, place this:
RESTORE_WARNINGS
Under the hood, the compiler-appropriate warning-disabling
mechanics involve the use of C99 _Pragma, which can be used
in macros.
For unrecognized or inappropriate compilers, or if
DISABLE_WARNING_PRAGMAS is defined, the macros expand
to nothing.
After the most recent round of moving old stuff to 'outdated',
src/windows.c contained two references to non-existent files.
That broke 'make depend'. Updating it to turn those two into
comments seems risky because someone might add an include for
some new interface later in the file. So comment them out in
the source instead. Also, redo previous 'make depend' update
from about three weeks ago to do the same thing.
in the air. can_reach_floor() was changed relatively recently
to return False if hero was held by a monster. It wasn't
necessarily because the monster was lifting him or her off the
floor though. Restricted movement could produce same effect.
Change the new behavior to only happen when holder has used a
hug attack, so that being held by a fungus or mimic doesn't
prevent access to the floor.
This may need to be revisited because the idea that the hero's
arms have been pinned by a hugging monster contradicts the
ability to attack that monster. However, it matches the long-
standing inability to attack any other adjacent monster in
that circumstance.
"You hear a [BCDG] note squeak in the distance" is ok, but
"you hear a [AEF] note squeak in the distance" isn't.
Squeaky board notes already had correct a/an handling but that
particular message explicitly suppressed it.
