c++: Fix up -fcontract* options

I've noticed
+FAIL: compiler driver --help=c++ option(s): "^ +-.*[^:.]\$" absent from output: "  -fcontract-build-level=[off|default|audit] Specify max contract level to generate runtime checks for"
error, this is due to missing dot at the end of the description.

The second part of the first hunk should fix that, but while at it,
I find it weird that some options don't have RejectNegative, yet
for options that accept an argument a negative option looks weird
and isn't really handled.

Though, shall we have those [on|off] options at all?
Those are inconsistent with all other boolean options gcc has.
Every other boolean option is -fwhatever for it being on
and -fno-whatever for it being off, shouldn't the options be
without arguments and accept negatives (-fcontract-assumption-mode
vs. -fno-contract-assumption-mode etc.)?

2022-11-23  Jakub Jelinek  <jakub@redhat.com>

	* c.opt (fcontract-assumption-mode=, fcontract-continuation-mode=,
	fcontract-role=, fcontract-semantic=): Add RejectNegative.
	(fcontract-build-level=): Terminate description with dot.

diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt
index 90088804e6413882543ff92d88062be9ddeebf4f..4b0539132c686f3accb5d510badcda51c67fef62 100644 (file)
--- a/gcc/c-family/c.opt
+++ b/gcc/c-family/c.opt
@@ -1692,12 +1692,12 @@ EnumValue
 Enum(on_off) String(on) Value(1)
 
 fcontract-assumption-mode=
-C++ Joined
+C++ Joined RejectNegative
 -fcontract-assumption-mode=[on|off]    Enable or disable treating axiom level contracts as assumptions (default on).
 
 fcontract-build-level=
 C++ Joined RejectNegative
--fcontract-build-level=[off|default|audit]     Specify max contract level to generate runtime checks for
+-fcontract-build-level=[off|default|audit]     Specify max contract level to generate runtime checks for.
 
 fcontract-strict-declarations=
 C++ Var(flag_contract_strict_declarations) Enum(on_off) Joined Init(0) RejectNegative
@@ -1708,15 +1708,15 @@ C++ Var(flag_contract_mode) Enum(on_off) Joined Init(1) RejectNegative
 -fcontract-mode=[on|off]       Enable or disable all contract facilities (default on).
 
 fcontract-continuation-mode=
-C++ Joined
+C++ Joined RejectNegative
 -fcontract-continuation-mode=[on|off]  Enable or disable contract continuation mode (default off).
 
 fcontract-role=
-C++ Joined
+C++ Joined RejectNegative
 -fcontract-role=<name>:<semantics>     Specify the semantics for all levels in a role (default, review), or a custom contract role with given semantics (ex: opt:assume,assume,assume)
 
 fcontract-semantic=
-C++ Joined
+C++ Joined RejectNegative
 -fcontract-semantic=<level>:<semantic> Specify the concrete semantics for level
 
 fcoroutines