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A user points out that Loopy's solver relies on elements of the

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`clues' array being able to be -1, so we must explicitly declare it
as `signed char' or it will break on platforms whose default char is
unsigned.

[originally from svn r7636]
This commit is contained in:
Simon Tatham
2007-07-05 18:57:50 +00:00
parent d9c4a9b659
commit 519b7de973
1 changed files with 5 additions and 5 deletions
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10
loopy.c
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@ -58,7 +58,7 @@ struct game_state {
int w, h;
/* Put -1 in a square that doesn't get a clue */
char *clues;
signed char *clues;
/* Arrays of line states, stored left-to-right, top-to-bottom */
char *hl, *vl;
@ -299,7 +299,7 @@ static game_state *dup_game(game_state *state)
ret->solved = state->solved;
ret->cheated = state->cheated;
ret->clues = snewn(SQUARE_COUNT(state), char);
ret->clues = snewn(SQUARE_COUNT(state), signed char);
memcpy(ret->clues, state->clues, SQUARE_COUNT(state));
ret->hl = snewn(HL_COUNT(state), char);
@ -1425,7 +1425,7 @@ enum { SQUARE_LIT, SQUARE_UNLIT };
* the dimensions provided by said game_state) */
static void add_full_clues(game_state *state, random_state *rs)
{
char *clues;
signed char *clues;
char *board;
int i, j, a, b, c;
int board_area = SQUARE_COUNT(state);
@ -1722,7 +1722,7 @@ static char *new_game_desc(game_params *params, random_state *rs,
state->h = params->h;
state->w = params->w;
state->clues = snewn(SQUARE_COUNT(params), char);
state->clues = snewn(SQUARE_COUNT(params), signed char);
state->hl = snewn(HL_COUNT(params), char);
state->vl = snewn(VL_COUNT(params), char);
@ -1774,7 +1774,7 @@ static game_state *new_game(midend *me, game_params *params, char *desc)
state->h = params->h;
state->w = params->w;
state->clues = snewn(SQUARE_COUNT(params), char);
state->clues = snewn(SQUARE_COUNT(params), signed char);
state->hl = snewn(HL_COUNT(params), char);
state->vl = snewn(VL_COUNT(params), char);