Check for NULL position and NULL filename.
Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx>
Signed-off-by: Frank Rowand <frank.rowand@xxxxxxxx>
Reviewed-by: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
---
v4: no change
srcpos.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/srcpos.c b/srcpos.c
index cb6ed0e..9dd3297 100644
--- a/srcpos.c
+++ b/srcpos.c
@@ -244,12 +244,20 @@ srcpos_copy(struct srcpos *pos)
char *
srcpos_string(struct srcpos *pos)
{
- const char *fname = "<no-file>";
+ const char *fname;
char *pos_str;
- if (pos->file && pos->file->name)
- fname = pos->file->name;
+ if (!pos) {
+ xasprintf(&pos_str, "<no-file>:<no-line>");
+ return pos_str;
+ }
+ if (!pos->file)
+ fname = "<no-file>";
+ else if (!pos->file->name)
+ fname = "<no-filename>";
+ else
+ fname = pos->file->name;
if (pos->first_line != pos->last_line)
xasprintf(&pos_str, "%s:%d.%d-%d.%d", fname,
--
2.7.4
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