neovim

commit 9f84e01dfb0d9bb0eff1a5c709a6c1158be1e131
parent 27eb0aba3c1b1491b18710d1b5d12ff5986ca934
Author: Jan Edmund Lazo <jan.lazo@mail.utoronto.ca>
Date:   Sun, 19 Oct 2025 21:20:36 -0400

vim-patch:8.2.3673: crash when allocating signal stack fails

Problem:    Crash when allocating signal stack fails.
Solution:   Only using sourcing info when available. (closes vim/vim#9215)

https://github.com/vim/vim/commit/0bd8d0563853ab821a018fb9cdd85f674684fe57

Co-authored-by: Bram Moolenaar <Bram@vim.org>

Diffstat:
M
src/nvim/message.c
 | 
4
++--
M
src/nvim/runtime.h
 | 
1
+

2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/nvim/message.c b/src/nvim/message.c
@@ -643,7 +643,7 @@ void reset_last_sourcing(void)
 /// @return  true if "SOURCING_NAME" differs from "last_sourcing_name".
 static bool other_sourcing_name(void)
 {
-  if (SOURCING_NAME != NULL) {
+  if (HAVE_SOURCING_INFO && SOURCING_NAME != NULL) {
     if (last_sourcing_name != NULL) {
       return strcmp(SOURCING_NAME, last_sourcing_name) != 0;
     }
@@ -659,7 +659,7 @@ static bool other_sourcing_name(void)
 static char *get_emsg_source(void)
   FUNC_ATTR_MALLOC FUNC_ATTR_WARN_UNUSED_RESULT
 {
-  if (SOURCING_NAME != NULL && other_sourcing_name()) {
+  if (HAVE_SOURCING_INFO && SOURCING_NAME != NULL && other_sourcing_name()) {
     char *sname = estack_sfile(ESTACK_NONE);
     char *tofree = sname;
 
diff --git a/src/nvim/runtime.h b/src/nvim/runtime.h
@@ -15,6 +15,7 @@
 /// Stack of execution contexts.  Each entry is an estack_T.
 /// Current context is at ga_len - 1.
 extern garray_T exestack;
+#define HAVE_SOURCING_INFO  (exestack.ga_data != NULL && exestack.ga_len > 0)
 /// name of error message source
 #define SOURCING_NAME (((estack_T *)exestack.ga_data)[exestack.ga_len - 1].es_name)
 /// line number in the message source or zero