David, I attached a patch from Roland, which prevents a crash when a
fatal errormsg() is called during shell start up, like an out of
memory condition. This can happen if errormsg() forces an abort while
the Shell_t is not fully initialized. The patch prevents a core dump.
Olga
--
, _ _ ,
{ \/`o;====- Olga Kryzhanovska -====;o`\/ }
.----'-/`-/ olga.kryzhanov...@gmail.com \-`\-'----.
`'-..-| / http://twitter.com/fleyta \ |-..-'`
/\/\ Solaris/BSD//C/C++ programmer /\/\
`--` `--`
--- src/cmd/ksh93/sh/fault.c 2012-09-08 01:58:48.000000000 +0200
+++ src/cmd/ksh93/sh/fault.c 2012-09-22 05:46:35.733792652 +0200
@@ -426,6 +426,8 @@
sh_exit(shp,shp->exitval);
}
}
+ if (!shp->sigflag)
+ return;
if(shp->sigflag[SIGALRM]&SH_SIGALRM)
sh_timetraps(shp);
if((shp->sigflag[SIGCHLD]&SH_SIGTRAP) && shp->st.trapcom[SIGCHLD])
@@ -570,7 +572,7 @@
savxit = SH_EXITSIG|sig;
if(shp->userinit)
(*shp->userinit)(shp, -1);
- if(t=shp->st.trapcom[0])
+ if(shp->st.trapcom && (t=shp->st.trapcom[0]))
{
shp->st.trapcom[0]=0; /*should free but not long */
shp->oldexit = savxit;
@@ -583,7 +585,8 @@
sh_offstate(shp,SH_ERREXIT);
sh_chktrap(shp);
}
- nv_scan(shp->var_tree,array_notify,(void*)0,NV_ARRAY,NV_ARRAY);
+ if (shp->var_tree)
+ nv_scan(shp->var_tree,array_notify,(void*)0,NV_ARRAY,NV_ARRAY);
sh_freeup(shp);
#if SHOPT_ACCT
sh_accend();
@@ -595,7 +598,7 @@
job_walk(shp,sfstderr,job_terminate,SIGHUP,NIL(char**));
#endif /* JOBS */
job_close(shp);
- if(nv_search("VMTRACE", shp->var_tree,0))
+ if(shp->var_tree && nv_search("VMTRACE", shp->var_tree,0))
strmatch((char*)0,(char*)0);
sfsync((Sfio_t*)sfstdin);
sfsync((Sfio_t*)shp->outpool);
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