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

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

0bd8d05638

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
Jan Edmund Lazo
2025-10-19 21:20:36 -04:00
parent 27eb0aba3c
commit 9f84e01dfb
2 changed files with 3 additions and 2 deletions
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4
src/nvim/message.c
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@@ -643,7 +643,7 @@ void reset_last_sourcing(void)
/// @return true if "SOURCING_NAME" differs from "last_sourcing_name". /// @return true if "SOURCING_NAME" differs from "last_sourcing_name".
static bool other_sourcing_name(void) static bool other_sourcing_name(void)
{ {
if (SOURCING_NAME != NULL) { if (HAVE_SOURCING_INFO && SOURCING_NAME != NULL) {
if (last_sourcing_name != NULL) { if (last_sourcing_name != NULL) {
return strcmp(SOURCING_NAME, last_sourcing_name) != 0; return strcmp(SOURCING_NAME, last_sourcing_name) != 0;
} }
@@ -659,7 +659,7 @@ static bool other_sourcing_name(void)
static char *get_emsg_source(void) static char *get_emsg_source(void)
FUNC_ATTR_MALLOC FUNC_ATTR_WARN_UNUSED_RESULT 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 *sname = estack_sfile(ESTACK_NONE);
char *tofree = sname; char *tofree = sname;

1
src/nvim/runtime.h
View File

@@ -15,6 +15,7 @@
/// Stack of execution contexts. Each entry is an estack_T. /// Stack of execution contexts. Each entry is an estack_T.
/// Current context is at ga_len - 1. /// Current context is at ga_len - 1.
extern garray_T exestack; extern garray_T exestack;
#define HAVE_SOURCING_INFO (exestack.ga_data != NULL && exestack.ga_len > 0)
/// name of error message source /// name of error message source
#define SOURCING_NAME (((estack_T *)exestack.ga_data)[exestack.ga_len - 1].es_name) #define SOURCING_NAME (((estack_T *)exestack.ga_data)[exestack.ga_len - 1].es_name)
/// line number in the message source or zero /// line number in the message source or zero