gbranden pushed a commit to branch master
in repository groff.
commit 43e6c74cd132121aca7b3e0fce3d5565879af9d3
Author: G. Branden Robinson <[email protected]>
AuthorDate: Wed Nov 19 20:39:32 2025 -0600
[troff]: Avoid null pointer dereference (1/2).
* src/roff/troff/input.cpp (encode_character_for_device_output): Do it.
---
ChangeLog | 5 +++++
src/roff/troff/input.cpp | 3 ++-
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/ChangeLog b/ChangeLog
index 2d60df129..44d89c286 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2025-11-19 G. Branden Robinson <[email protected]>
+
+ * src/roff/troff/input.cpp (encode_character_for_device_output):
+ Avoid null pointer dereference.
+
2025-11-19 G. Branden Robinson <[email protected]>
* src/roff/troff/input.cpp (get_line_arg): Add assertion.
diff --git a/src/roff/troff/input.cpp b/src/roff/troff/input.cpp
index 73aacc87f..4a1b7f87c 100644
--- a/src/roff/troff/input.cpp
+++ b/src/roff/troff/input.cpp
@@ -6455,7 +6455,8 @@ static void
encode_special_character_for_device_output(macro *mac)
const char *sc;
if (font::use_charnames_in_special) {
charinfo *ci = tok.get_charinfo(true /* required */);
- sc = ci->get_symbol()->contents();
+ if (ci != 0 /* nullptr */)
+ sc = ci->get_symbol()->contents();
}
else
sc = tok.get_charinfo(true /* required */)->get_symbol()
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