strchr() returns NULL in case the string is not found and if that
happens we risk dereferencing a NULL pointer. It never hurts to
check for that condition and exit normally with an error rather
than crashing.
(no, the indentation is not according to CodingStyle, it's simply
following whatever else is in that file)
Signed-off-by: Jesper Juhl <[email protected]>
---
scripts/genksyms/lex.l | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/scripts/genksyms/lex.l b/scripts/genksyms/lex.l
index 5e544a0..28edc0c 100644
--- a/scripts/genksyms/lex.l
+++ b/scripts/genksyms/lex.l
@@ -154,6 +154,8 @@ repeat:
file = strchr(yytext, '\"')+1;
e = strchr(file, '\"');
+ if (!file || !e)
+ exit(1);
*e = '\0';
cur_filename = memcpy(xmalloc(e-file+1), file, e-file+1);
cur_line = atoi(yytext+2);
-
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