Re: bin/52348: sh (alias.c:271) invokes undefined behaviour

[coypu%sdf.org@localhost]

The following reply was made to PR bin/52348; it has been noted by GNATS.

From: coypu%sdf.org@localhost
To: Robert Elz <kre%munnari.OZ.AU@localhost>
Cc: gnats-bugs%NetBSD.org@localhost
Subject: Re: bin/52348: sh (alias.c:271) invokes undefined behaviour
Date: Thu, 29 Jun 2017 06:25:30 +0000

 I could get useful info by doing this:
 
 #include <assert.h>
 STATIC struct alias **
 hashalias(const char *p)
 {
 	unsigned int hashval;
 
 	assert(*p > -5);
 	hashval = *p << 4;
 	while (*p)
 		hashval+= *p++;
 	return &atab[hashval % ATABSIZE];
 }
 
 But instead it gives me in these cases:
 [1]   Abort trap              AWK=/usr/src/obj...
 *** Error code 134
 
 and no coredump.