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-rw-r--r--src/common/backtrace.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/common/backtrace.c b/src/common/backtrace.c
index eac54e0b69..3b762b68e3 100644
--- a/src/common/backtrace.c
+++ b/src/common/backtrace.c
@@ -6,6 +6,11 @@
*
* \brief Functions to produce backtraces on bugs, crashes, or assertion
* failures.
+ *
+ * Currently, we've only got an implementation here using the backtrace()
+ * family of functions, which are sometimes provided by libc and sometimes
+ * provided by libexecinfo. We tie into the sigaction() backend in order to
+ * detect crashes.
*/
#define __USE_GNU