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Avoid crash when trying to solve before generating tables. #2

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Avoid crash when trying to solve before generating tables. #2

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15 changes: 9 additions & 6 deletions main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -59,28 +59,31 @@ int solve(char *tosolve)

corner_table = CORNER_TABLE_NEW;
input = fopen("table_corner.rht", "r");
if (!corner_read(corner_table, input)) {
printf("Warning: could not open corner table\n");
if (NULL == input || !corner_read(corner_table, input)) {
printf("Warning: could not open corner table. did you generate it?\n");
free(corner_table);
corner_table = NULL;
return (0);
}
fclose(input);

edge_table = EDGE_TABLE_NEW;
input = fopen("table_edge1.rht", "r");
if (!edge_read(edge_table, input)) {
printf("Warning: could not open edge table\n");
if (NULL == input || !edge_read(edge_table, input)) {
printf("Warning: could not open edge table. did you generate it?\n");
free(edge_table);
edge_table = NULL;
return (0);
}
fclose(input);

edge_table2 = EDGE_TABLE_NEW;
input = fopen("table_edge2.rht", "r");
if (!edge_read(edge_table2, input)) {
printf("Warning: could not open second edge table\n");
if (NULL == input || !edge_read(edge_table2, input)) {
printf("Warning: could not open second edge table. did you generate it?\n");
free(edge_table2);
edge_table2 = NULL;
return (0);
}
fclose(input);

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