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Made maximum rows more limited to avoid bugs

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AnnaSnoeijs 2025-08-14 20:21:06 +02:00
parent 214112ad17
commit 72a56a15d7
2 changed files with 7 additions and 7 deletions
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4
connect4.c
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@ -114,7 +114,7 @@ int main( int argc, char *argv[] ){
"\n" "\n"
" -o file --output file Ouput moves taken in game to file\n" " -o file --output file Ouput moves taken in game to file\n"
"\n" "\n"
" --slow-calcwins Use the 32bit reference implementation of calcWins()\n" " --slow-calcwins Use the reference implementation of calcWins()\n"
" --random-moves Play random moves instead of asking for input\n" " --random-moves Play random moves instead of asking for input\n"
); );
return 0; return 0;
@ -150,7 +150,7 @@ int main( int argc, char *argv[] ){
fprintf( stderr, "ERR: AMOUT OF ROWS MUST BE AT LEAST 1\n" ); fprintf( stderr, "ERR: AMOUT OF ROWS MUST BE AT LEAST 1\n" );
return -1; return -1;
} }
#define ROWOVERFLOW (rowsint_t)( sizeof(column_t) * CHAR_BIT ) #define ROWOVERFLOW (rowsint_t)( sizeof(column_t) * CHAR_BIT - 1 )
if( playboard.rows >= ROWOVERFLOW ){ if( playboard.rows >= ROWOVERFLOW ){
fprintf( stderr, fprintf( stderr,
"ERR: AMOUT OF ROWS MUST BE LESS THAN %d\n", ROWOVERFLOW "ERR: AMOUT OF ROWS MUST BE LESS THAN %d\n", ROWOVERFLOW

4
types.h
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@ -5,13 +5,13 @@
#include <limits.h> #include <limits.h>
#include "config.h" #include "config.h"
// Use fastest available ints unless it's 64 bits because that uses more memory // Use fastest available ints unless it's 64 bits because that is doing silly
#if INT_FAST16_MAX == INT_FAST64_MAX #if INT_FAST16_MAX == INT_FAST64_MAX
typedef int rowsint_t; typedef int rowsint_t;
typedef unsigned columnsint_t; typedef unsigned columnsint_t;
#define QUITCOLUMN UINT_MAX #define QUITCOLUMN UINT_MAX
typedef unsigned winint_t; typedef unsigned winint_t;
typedef uintmax_t column_t; typedef unsigned column_t;
#else #else
typedef int_fast8_t rowsint_t; typedef int_fast8_t rowsint_t;
typedef uint_fast8_t columnsint_t; typedef uint_fast8_t columnsint_t;