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-rw-r--r--lib/c-stack.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/c-stack.h b/lib/c-stack.h
index 8c06541fd6..e1e0a6e448 100644
--- a/lib/c-stack.h
+++ b/lib/c-stack.h
@@ -36,6 +36,9 @@
ACTION must be async-signal-safe. ACTION together with its callees
must not require more than SIGSTKSZ bytes of stack space. Also,
ACTION should not call longjmp, because this implementation does
- not guarantee that it is safe to return to the original stack. */
+ not guarantee that it is safe to return to the original stack.
+
+ This function may install a handler for the SIGSEGV signal or for the SIGBUS
+ signal or exercise other system dependent exception handling APIs. */
extern int c_stack_action (void (* /*action*/) (int));