Attached a patch. The only problem is I don't free(tmp) but I guess it's not a big issue
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diff -Naur acon-1.0.5.orig/acon.c acon-1.0.5/acon.c
--- acon-1.0.5.orig/acon.c 2003-07-18 22:09:06.000000000 +0300
+++ acon-1.0.5/acon.c 2008-04-13 18:36:55.000000000 +0300
@@ -46,13 +46,24 @@
char *env;
FILE *fp;
char font[300],translation[300],keymap[300];
- char tmp[300];
+ char *tmp = NULL;
font[0]=translation[0]=keymap[0]=0;
- if((env=getenv("HOME")))
- sprintf(tmp,"%s/.acon.conf",env);
- else
- strcpy(tmp,"/etc/acon.conf");
+ if((env=getenv("HOME"))) {
+ tmp = malloc(strlen(env) + 12);
+ if (!tmp) {
+ perror("malloc");
+ return 1;
+ }
+ sprintf(tmp,"%s/.acon.conf",env);
+ }
+ else {
+ tmp = strdup("/etc/acon.conf");
+ if (!tmp) {
+ perror("strdup");
+ return 1;
+ }
+ }
if((fp=fopen(tmp,"r"))==NULL)
{
if((fp=fopen("/etc/acon.conf","r"))==NULL)
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