@@ -885,13 +885,15 @@ same source lines, the line counts themselves might seem inconsistent.
Long-running applications can use the @code{__gcov_reset} and @code{__gcov_dump}
facilities to restrict profile collection to the program region of
-interest. Calling @code{__gcov_reset(void)} will clear all profile counters
-to zero, and calling @code{__gcov_dump(void)} will cause the profile information
-collected at that point to be dumped to @file{.gcda} output files.
+interest. Calling @code{__gcov_reset(void)} will clear all run-time profile
+counters to zero, and calling @code{__gcov_dump(void)} will cause the profile
+information collected at that point to be dumped to @file{.gcda} output files
+(the function can be called just once).
Instrumented applications use a static destructor with priority 99
to invoke the @code{__gcov_dump} function. Thus @code{__gcov_dump}
is executed after all user defined static destructors,
as well as handlers registered with @code{atexit}.
+
If an executable loads a dynamic shared object via dlopen functionality,
@option{-Wl,--dynamic-list-data} is needed to dump all profile data.