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Fix frame size allocation of alternate event/hook handlers

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When the only existing handler doesn't use the full argument list, still
have to ensure the full frame is allocated because all arguments get set
regardless.
This commit is contained in:
Jon Siwek 2020-04-09 22:05:34 -07:00
parent 070b28ac05
commit 9243341e8c
3 changed files with 20 additions and 1 deletions
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5
src/Func.cc
View file

@ -449,6 +449,11 @@ void BroFunc::AddBody(IntrusivePtr<Stmt> new_body, id_list* new_inits,
if ( new_frame_size > frame_size )
frame_size = new_frame_size;
auto num_args = FType()->Args()->NumFields();
if ( num_args > static_cast<int>(frame_size) )
frame_size = num_args;
new_body = AddInits(std::move(new_body), new_inits);
if ( Flavor() == FUNC_FLAVOR_FUNCTION )

3
testing/btest/Baseline/language.alternate-event-hook-prototypes/out
View file

@ -1,4 +1,4 @@
warning in /home/jon/pro/zeek/zeek/testing/btest/.tmp/language.alternate-event-hook-prototypes/alternate-event-hook-prototypes.zeek, line 56 and /home/jon/pro/zeek/zeek/testing/btest/.tmp/language.alternate-event-hook-prototypes/alternate-event-hook-prototypes.zeek, line 10: use of deprecated prototype (hook(c:count;) : bool and my_hook)
warning in /home/jon/pro/zeek/zeek/testing/btest/.tmp/language.alternate-event-hook-prototypes/alternate-event-hook-prototypes.zeek, line 68 and /home/jon/pro/zeek/zeek/testing/btest/.tmp/language.alternate-event-hook-prototypes/alternate-event-hook-prototypes.zeek, line 10: use of deprecated prototype (hook(c:count;) : bool and my_hook)
my_hook, infinite, 13
my_hook, 13, infinite
my_hook, infinite
@ -9,3 +9,4 @@ my_event, 42, enantiodromia
my_event, enantiodromia
my_event, 42
my_event
foo, C

13
testing/btest/language/alternate-event-hook-prototypes.zeek
View file

@ -13,6 +13,18 @@ global my_hook: hook(s: string);
global my_hook: hook(c: count) &deprecated;
global my_hook: hook();
# Required Frame size gets (re)calculated on AddBody, so this "foo" setup is
# checking that if the only existing body doesn't use all arguments, the Frame
# size is still allocated sufficiently to hold all arguments of the canonical
# prototype.
global foo: event(a: string, b: string, c: string);
global foo: event(c: string);
event foo(c: string)
{
print "foo", c;
}
event my_event(s: string, c: count)
{
print "my_event", s, c;
@ -67,4 +79,5 @@ event zeek_init()
{
hook my_hook("infinite", 13);
event my_event("enantiodromia", 42);
event foo("A", "B", "C");
}