win: fix lock function call for backtrace collection (#41849)

vtjnash · KristofferC · commit 1b3fb6096032 · 2021-08-25T12:46:28.000+02:00
Avoids an assert when this is triggered (cherry picked from commit 2d81742)
diff --git a/src/signals-win.c b/src/signals-win.c
@@ -141,7 +141,7 @@ void jl_throw_in_ctx(jl_value_t *excpt, PCONTEXT ctxThread)
                                               ct->gcstack);
         }
         else if (have_backtrace_fiber) {
-            JL_LOCK(&backtrace_lock);
+            JL_LOCK_NOGC(&backtrace_lock);
             stkerror_ctx = ctxThread;
             stkerror_ptls = ptls;
             jl_swapcontext(&error_return_fiber, &collect_backtrace_fiber);

Original file line number	Diff line number	Diff line change
`@@ -141,7 +141,7 @@ void jl_throw_in_ctx(jl_value_t *excpt, PCONTEXT ctxThread)`
`141`	`141`	`ct->gcstack);`
`142`	`142`	`}`
`143`	`143`	`else if (have_backtrace_fiber) {`
`144`		`- JL_LOCK(&backtrace_lock);`
	`144`	`+ JL_LOCK_NOGC(&backtrace_lock);`
`145`	`145`	`stkerror_ctx = ctxThread;`
`146`	`146`	`stkerror_ptls = ptls;`
`147`	`147`	`jl_swapcontext(&error_return_fiber, &collect_backtrace_fiber);`