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Avoid segfault when profiling Lisp programs with threads

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* src/eval.c (backtrace_top): Don't segfault if current_thread is
NULL.  (Bug#76970)
This commit is contained in:
Eli Zaretskii 2025-06-21 11:53:24 +03:00
parent 075ebed98f
commit dd95447b05
1 changed files with 1 additions and 1 deletions
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2
src/eval.c
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@ -171,7 +171,7 @@ backtrace_top (void)
/* This is so "xbacktrace" doesn't crash in pdumped Emacs if they
invoke the command before init_eval_once_for_pdumper initializes
specpdl machinery. See also backtrace_p above. */
if (!specpdl)
if (!current_thread || !specpdl)
return NULL;
union specbinding *pdl = specpdl_ptr - 1;