>Hello Guys,
>
>I received SIGSEGV in awk,
>looked around a bit
>found some issue,
>asking for help from AWK OWNER
>
>At, awk.c:2626
>what if next_input_file() returns NULL, then the following code is gonna
>get SIGSEGV for sure.
>
>
>} else {
> if (!iF)
> iF = next_input_file(); // if returns NULL
> rsm = iF;
>}
>
>if (!rsm->F) { // then SIGSEGV here
> setvar_i(intvar[ERRNO], errno);
> setvar_i(res, -1);
> break;
>}
>
>And there are other points to get SIGSEGV if I fix just the above.
>
>I am looking into it.
>
>
>Be :-),
>Deepak Jangid
I have made a patch for the SIGSEGV in awk, can somebody help me confirm it
if it's right way to go.
--- a/busybox/editors/awk.c 2009-06-05 17:45:40.000000000 +0530
+++ b/busybox/editors/awk.c 2011-09-06 07:23:45.000000000 +0530
@@ -1726,6 +1726,9 @@
/* we're using our own buffer since we need access to accumulating
* characters
*/
+
+ if(!rsm) return 0;
+
fd = fileno(rsm->F);
m = rsm->buffer;
a = rsm->adv;
@@ -2408,7 +2411,7 @@
X.rsm = iF;
}
- if (!X.rsm->F) {
+ if ( X.rsm && !X.rsm->F) {
setvar_i(intvar[ERRNO], errno);
setvar_i(res, -1);
break;
Happy Coding ........
Deepak Jangid
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