[pushed] ada-lang.c: Expand standard_exc's introductory comment.
Commit Message
This patch expands standard_exc's introductory comment to explain
why this table does not include Numeric_Error.
gdb/ChangeLog:
* ada-lang.c (standard_exc): Expand introductory comment.
Pushed after rebuilding GDB.
---
gdb/ChangeLog | 4 ++++
gdb/ada-lang.c | 14 +++++++++++++-
2 files changed, 17 insertions(+), 1 deletion(-)
@@ -1,3 +1,7 @@
+2014-04-24 Joel Brobecker <brobecker@adacore.com>
+
+ * ada-lang.c (standard_exc): Expand introductory comment.
+
2014-04-24 Michael Sturm <michael.sturm@mintel.com>
Walfred Tedeschi <walfred.tedeschi@intel.com>
@@ -11294,7 +11294,19 @@ ada_modulus (struct type *type)
variants of the runtime, we use a sniffer that will determine
the runtime variant used by the program being debugged. */
-/* Ada's standard exceptions. */
+/* Ada's standard exceptions.
+
+ The Ada 83 standard also defined Numeric_Error. But there so many
+ situations where it was unclear from the Ada 83 Reference Manual
+ (RM) whether Constraint_Error or Numeric_Error should be raised,
+ that the ARG (Ada Rapporteur Group) eventually issued a Binding
+ Interpretation saying that anytime the RM says that Numeric_Error
+ should be raised, the implementation may raise Constraint_Error.
+ Ada 95 went one step further and pretty much removed Numeric_Error
+ from the list of standard exceptions (it made it a renaming of
+ Constraint_Error, to help preserve compatibility when compiling
+ an Ada83 compiler). As such, we do not include Numeric_Error from
+ this list of standard exceptions. */
static char *standard_exc[] = {
"constraint_error",