nethack-gwaa-kiwi/nethack
1
0
Fork 0
Code Pull Requests Activity

some sys.c orphaned pointer prevention

Browse Source
This commit is contained in:
nhmall
2024-11-13 17:14:47 -05:00
parent 7ff17845c6
commit b8083733de
1 changed files with 14 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/sys.c
View File

@@ -22,21 +22,31 @@ sys_early_init(void)
{
const char *p;
/* Don't assume that these are not already set, and that it is
* safe to dupstr() without orphaning any pointers. Check them. */
sysopt.support = (char *) 0;
sysopt.recover = (char *) 0;
#ifdef SYSCF
sysopt.wizards = (char *) 0;
#else
if (sysopt.wizards)
free((genericptr_t) sysopt.wizards), sysopt.wizards = (char *) 0;
sysopt.wizards = dupstr(WIZARD_NAME);
#endif
if ((p = getenv("DEBUGFILES")) != 0) {
if (sysopt.debugfiles)
free((genericptr_t) sysopt.debugfiles),
sysopt.debugfiles = (char *) 0;
sysopt.debugfiles = dupstr(p);
sysopt.env_dbgfl = 1; /* prevent sysconf processing from overriding */
} else {
#if defined(SYSCF) || !defined(DEBUGFILES)
sysopt.debugfiles = (char *) 0;
#else
if (sysopt.debugfiles)
free((genericptr_t) sysopt.debugfiles), sysopt.debugfiles = (char *) 0;
sysopt.debugfiles = dupstr(DEBUGFILES);
#endif
sysopt.env_dbgfl = 0;
@@ -67,10 +77,10 @@ sys_early_init(void)
#ifdef PANICTRACE
/* panic options */
if (sysopt.gdbpath)
free((genericptr_t) sysopt.gdbpath), sysopt.gdbpath = 0;
free((genericptr_t) sysopt.gdbpath), sysopt.gdbpath = (char *) 0;
sysopt.gdbpath = dupstr(GDBPATH);
if (sysopt.greppath)
free((genericptr_t) sysopt.greppath), sysopt.greppath = 0;
free((genericptr_t) sysopt.greppath), sysopt.greppath = (char *) 0;
sysopt.greppath = dupstr(GREPPATH);
#if (NH_DEVEL_STATUS != NH_STATUS_RELEASED)
sysopt.panictrace_gdb = 1;
@@ -128,7 +138,7 @@ sysopt_release(void)
#endif
if (sysopt.genericusers)
free((genericptr_t) sysopt.genericusers),
sysopt.genericusers = (char *) 0;
sysopt.genericusers = (char *) 0;
if (sysopt.gdbpath)
free((genericptr_t) sysopt.gdbpath), sysopt.gdbpath = (char *) 0;
if (sysopt.greppath)
@@ -138,7 +148,7 @@ sysopt_release(void)
none of the preceding ones are likely to trigger a controlled panic */
if (sysopt.fmtd_wizard_list)
free((genericptr_t) sysopt.fmtd_wizard_list),
sysopt.fmtd_wizard_list = (char *) 0;
sysopt.fmtd_wizard_list = (char *) 0;
return;
}