fixes #4 stack overflow by moving ~6KB FAT buffer from stack to heap

PerditionC · PerditionC · commit 72417d51cb10 · 2024-08-07T22:25:52.000-04:00
diff --git a/recordbc.c b/recordbc.c
@@ -46,11 +46,12 @@ void Record_Bad_Clusters(void)
   if (param.fat_type==FAT32) Record_Bad_Clusters_FAT32();
 }
 
+static unsigned char fat12_fat[6145];
 void Record_Bad_Clusters_FAT12(void)
 {
   unsigned long bad_cluster;
   unsigned long last_bad_cluster;
-  unsigned char fat12_fat[6145];
+  /* unsigned char fat12_fat[6145]; -- causes stack overflow with default Open Watcom build */
 
   int index;
   int sector;

Original file line number	Diff line number	Diff line change
`@@ -46,11 +46,12 @@ void Record_Bad_Clusters(void)`
`46`	`46`	`if (param.fat_type==FAT32) Record_Bad_Clusters_FAT32();`
`47`	`47`	`}`
`48`	`48`
	`49`	`+static unsigned char fat12_fat[6145];`
`49`	`50`	`void Record_Bad_Clusters_FAT12(void)`
`50`	`51`	`{`
`51`	`52`	`unsigned long bad_cluster;`
`52`	`53`	`unsigned long last_bad_cluster;`
`53`		`- unsigned char fat12_fat[6145];`
	`54`	`+ /* unsigned char fat12_fat[6145]; -- causes stack overflow with default Open Watcom build */`
`54`	`55`
`55`	`56`	`int index;`
`56`	`57`	`int sector;`