expand a bit the in-GDB help for the "catch exception" help text

One of our users remarked that the help doesn't mention the fact that
the "catch exception" supports the special argument "unhandled" to catch
exceptions which do not have a handler. This patch changes the output
of...

 | (gdb) help catch exception
 | Catch Ada exceptions, when raised.
 | With an argument, catch only exceptions with the given name.

... to ...

 | (gdb) help catch exception
 | Catch Ada exceptions, when raised.
 | Usage: catch exception [ ARG ]
 |
 | Without any argument, stop when any Ada exception is raised.
 | If ARG is "unhandled" (without the quotes), only stop when the exception
 | being raised does not have a handler (and will therefore lead to the task's
 | termination).
 | Otherwise, the catchpoint only stops when the name of the exception being
 | raised is the same as ARG.

gdb/ChangeLog:

        * ada-lang.c (_initialize_ada_language): Expand the help text
        for the "catch exception" command.

Tested on x86_64-linux, no regression.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e0b47b4bb09a0bd612780f53a081505cccb2d071..29b525ae38956e2782709a8227acd87caef7c08d 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2019-10-12  Joel Brobecker  <brobecker@adacore.com>
+
+       * ada-lang.c (_initialize_ada_language): Expand the help text
+       for the "catch exception" command.
+
 2019-01-12  Philippe Waroquiers  <philippe.waroquiers@skynet.be>
 
        * symtab.c (matching_obj_sections): Initialize obj,

diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
index f552f13a418313702fc74630277418533d141cab..dbd258a6088bd7459b6db449a3d5a827aa4a8061 100644 (file)
--- a/gdb/ada-lang.c
+++ b/gdb/ada-lang.c
@@ -14508,7 +14508,14 @@ overloads selection menu is activated"),
 
   add_catch_command ("exception", _("\
 Catch Ada exceptions, when raised.\n\
-With an argument, catch only exceptions with the given name."),
+Usage: catch exception [ ARG ]\n\
+\n\
+Without any argument, stop when any Ada exception is raised.\n\
+If ARG is \"unhandled\" (without the quotes), only stop when the exception\n\
+being raised does not have a handler (and will therefore lead to the task's\n\
+termination).\n\
+Otherwise, the catchpoint only stops when the name of the exception being\n\
+raised is the same as ARG."),
                     catch_ada_exception_command,
                      NULL,
                     CATCH_PERMANENT,