readelf: Print dwarf_errmsg if dwarf_onesrcline or dwarf_linesrc fails.
Don't just crash using the NULL result in print_decoded_line_section.
Signed-off-by: Mark Wielaard <mjw@redhat.com>
diff --git a/src/readelf.c b/src/readelf.c
index 9c62853..08b3ae4 100644
--- a/src/readelf.c
+++ b/src/readelf.c
@@ -6256,9 +6256,19 @@
for (size_t n = 0; n < nlines; n++)
{
Dwarf_Line *line = dwarf_onesrcline (lines, n);
+ if (line == NULL)
+ {
+ printf (" dwarf_onesrcline: %s\n", dwarf_errmsg (-1));
+ continue;
+ }
Dwarf_Word mtime, length;
const char *file = dwarf_linesrc (line, &mtime, &length);
- if (strcmp (last_file, file) != 0)
+ if (file == NULL)
+ {
+ printf (" <%s> (mtime: ?, length: ?)\n", dwarf_errmsg (-1));
+ last_file = "";
+ }
+ else if (strcmp (last_file, file) != 0)
{
printf (" %s (mtime: %" PRIu64 ", length: %" PRIu64 ")\n",
file, mtime, length);