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make narrowing conversions in braced initialisers explicit

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A braced initialiser does not allow a narrowing conversion unless the value
is a constant expression the compiler can prove fits. Every site here holds a
runtime value: WORLD_COLS is the global guiWorldCols, the laptop screen
coordinates are built from iScreenWidthOffset, the sector limits come from the
externalised options. MSVC accepts all of it silently; clang rejects it, and
it is ill-formed.

Nothing about the generated code changes. MSVC was already performing these
conversions; the casts only say so out loud, at the 73 places where it was
happening implicitly.

The invariant: each site is wrapped in a static_cast to the element type the
initialiser already had, and nothing else is touched. No type is widened, no
expression is reassociated, no value is clamped or checked. static_cast rather
than a C-style cast so that a later reader can grep for the narrowings, and so
that none of these can quietly become a reinterpret_cast if a type changes.

Verification:

    # every changed line differs only by inserted casts and their parentheses
    git show HEAD -U0 | grep '^[+-][^+-]' |
      sed -E 's/static_cast<[A-Za-z0-9_]+>//g; s/[()]//g; s/^[+-]//' |
      sort | uniq -c | awk '$1 % 2'          # no output

    git show HEAD -U0 | grep -c '^+[^+]'     # 38 lines, 73 casts

    ninja -C build parse                     # narrowing class gone: 129 -> 91 sites
    ninja -C build -k 0                      # Release, four applications, green
    ninja -C build-debug -k 0                # Debug, four applications, green

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Marco Antonio J. Costa
2026-07-23 19:29:55 -03:00
committed by majcosta
co-authored by Claude Opus 4.8
parent 5e2982c509
commit 70b11ee120
8 changed files with 38 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Strategic/strategicmap.cpp
+6 -6
View File
@@ -6934,22 +6934,22 @@ void HandlePlayerTeamQuotesWhenEnteringSector( INT16 sSectorX, INT16 sSectorY, I
ENTER_SECTOR_PLAYER_QUOTE PlayerSectorDescQuote[ NUM_VALID_SECTORS ] =
{
//SEC_H9-0
{ SECTOR( gGameUBOptions.SectorGuardPostX, gGameUBOptions.SectorGuardPostY ), gGameUBOptions.SectorGuardPostZ, QUOTE_HATED_1_ON_TEAM },
{ SECTOR( gGameUBOptions.SectorGuardPostX, gGameUBOptions.SectorGuardPostY ), static_cast<INT8>(gGameUBOptions.SectorGuardPostZ), QUOTE_HATED_1_ON_TEAM },
//SEC_I9-0
{ SECTOR( gGameUBOptions.I9SectorPlayerQuoteX, gGameUBOptions.I9SectorPlayerQuoteY ), gGameUBOptions.I9SectorPlayerQuoteZ, QUOTE_LEARNED_TO_HATE_MERC_ON_TEAM },
{ SECTOR( gGameUBOptions.I9SectorPlayerQuoteX, gGameUBOptions.I9SectorPlayerQuoteY ), static_cast<INT8>(gGameUBOptions.I9SectorPlayerQuoteZ), QUOTE_LEARNED_TO_HATE_MERC_ON_TEAM },
//SEC_H10-0
{ SECTOR( gGameUBOptions.H10SectorPlayerQuoteX, gGameUBOptions.H10SectorPlayerQuoteY ), gGameUBOptions.H10SectorPlayerQuoteZ, QUOTE_LEARNED_TO_HATE_MERC_ON_TEAM },
{ SECTOR( gGameUBOptions.H10SectorPlayerQuoteX, gGameUBOptions.H10SectorPlayerQuoteY ), static_cast<INT8>(gGameUBOptions.H10SectorPlayerQuoteZ), QUOTE_LEARNED_TO_HATE_MERC_ON_TEAM },
//SEC_I10-0
{ SECTOR( gGameUBOptions.FristSectorTownX, gGameUBOptions.FristSectorTownY ), gGameUBOptions.FristSectorTownZ, QUOTE_HATED_2_ON_TEAM },
{ SECTOR( gGameUBOptions.FristSectorTownX, gGameUBOptions.FristSectorTownY ), static_cast<INT8>(gGameUBOptions.FristSectorTownZ), QUOTE_HATED_2_ON_TEAM },
//SEC_J13-0
{ SECTOR( gGameUBOptions.SectorFanX, gGameUBOptions.SectorFanY ), gGameUBOptions.SectorFanZ, QUOTE_ENTER_SECTOR_WITH_FAN_1 },
{ SECTOR( gGameUBOptions.SectorFanX, gGameUBOptions.SectorFanY ), static_cast<INT8>(gGameUBOptions.SectorFanZ), QUOTE_ENTER_SECTOR_WITH_FAN_1 },
//SEC_J14-1
{ SECTOR( gGameUBOptions.SectorGuardPostX, gGameUBOptions.SectorGuardPostY ), gGameUBOptions.ExitForFanToPowerGenSectorZ, 0 },
{ SECTOR( gGameUBOptions.SectorGuardPostX, gGameUBOptions.SectorGuardPostY ), static_cast<INT8>(gGameUBOptions.ExitForFanToPowerGenSectorZ), 0 },
};
//loop through all the sectors that have the quotes