midfavila/awk
1
0
Fork 0
Code Issues Pull Requests Projects Releases 1 Wiki Activity

Avoid creating an out-of-bounds pointer in word() (#48)

Browse Source 
As it is never dereferenced in the n == -1 case it shouldn't cause any
problems. However, UBSAN complains about this, so it is required to run
the tests when compiling with -fsanitize=undefined.
This commit is contained in:
Alexander Richardson 2019-09-10 07:54:53 +01:00 committed by Arnold Robbins
parent cbf924342b
commit ad9bd2f40a
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
lex.c
View File

@ -461,9 +461,8 @@ int word(char *w)
int c, n;
n = binsearch(w, keywords, sizeof(keywords)/sizeof(keywords[0]));
/* BUG: this ought to be inside the if; in theory could fault (daniel barrett) */
kp = keywords + n;
if (n != -1) { /* found in table */
kp = keywords + n;
yylval.i = kp->sub;
switch (kp->type) { /* special handling */
case BLTIN: