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[gamecode] Fix handling of undefined builtins

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The setup of the function descriptor for undefined builtins was
incomplete and led to the progs running code at address 0. It didn't end
well.
This commit is contained in:
Bill Currie 2022-02-14 14:28:19 +09:00
parent db8cf68ef3
commit 4d491a444d
2 changed files with 3 additions and 4 deletions
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2
include/QF/progs.h
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@ -1898,7 +1898,7 @@ struct progs_s {
struct hashtab_s *builtin_hash;
struct hashtab_s *builtin_num_hash;
struct biblock_s *builtin_blocks;
pr_int_t bi_no_function;
builtin_t *bi_no_function;
unsigned bi_next;
unsigned (*bi_map) (progs_t *pr, unsigned binum);
///@}

5
libs/gamecode/pr_builtins.c
View file

@ -121,7 +121,7 @@ PR_RegisterBuiltins (progs_t *pr, builtin_t *builtins, void *data)
bi->name = "invalid function";
bi->proc = bi_no_function;
bi->binum = builtin_next (pr);
pr->bi_no_function = bi->binum;
pr->bi_no_function = bi;
DARRAY_APPEND (pr->builtin_blocks, bi);
Hash_AddElement (pr->builtin_num_hash, bi);
}
@ -212,9 +212,8 @@ PR_RelocateBuiltins (progs_t *pr)
if (!bi) {
Sys_Printf ("PR_RelocateBuiltins: %s: undefined builtin %s\n",
pr->progs_name, bi_name);
desc->first_statement = -pr->bi_no_function;
bi = pr->bi_no_function;
bad = 1;
continue;
}
desc->first_statement = -bi->binum;
}