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replace a method to force bcheck.o linking

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* define __bound_init as external_global_sym insteed of the compiling
      a tiny program
    * remove warning about buf[] when CONFIG_TCC_BCHECK is not defined
This commit is contained in:
seyko 2015-04-12 04:47:15 +03:00
parent 4bb9dd44f1
commit e7a60e4d01
2 changed files with 9 additions and 5 deletions
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13
libtcc.c
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@ -434,7 +434,10 @@ ST_FUNC void put_extern_sym2(Sym *sym, Section *section,
ElfW(Sym) *esym;
const char *name;
char buf1[256];
#ifdef CONFIG_TCC_BCHECK
char buf[32];
#endif
if (section == NULL)
sh_num = SHN_UNDEF;
@ -1397,11 +1400,11 @@ LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
#ifdef CONFIG_TCC_BCHECK
if (s->do_bounds_check && (output_type == TCC_OUTPUT_EXE))
{
/* XXX force a bcheck.o linking by compiling a function with a local array.
Otherwise bcheck.o may be not linked. */
if (tcc_compile_string(s, "static void __bound_check_dummy_func(){int v[1];}") == -1)
tcc_warning("compiling __bound_check_dummy_func failed");
/* force a bcheck.o linking */
addr_t func = TOK___bound_init;
Sym *sym = external_global_sym(func, &func_old_type, 0);
if (!sym->c)
put_extern_sym(sym, NULL, 0, 0);
}
#endif
return 0;

1
tcctok.h
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@ -281,6 +281,7 @@
DEF(TOK___bound_main_arg, "__bound_main_arg")
DEF(TOK___bound_local_new, "__bound_local_new")
DEF(TOK___bound_local_delete, "__bound_local_delete")
DEF(TOK___bound_init, "__bound_init")
# ifdef TCC_TARGET_PE
DEF(TOK_malloc, "malloc")
DEF(TOK_free, "free")