mirror of
https://github.com/frida/tinycc
synced 2024-11-24 00:29:38 +03:00
mems & leaks
- define_start: set above preprocess_start because now preprocess_start is defining macros. - free "cmd_include_files" - free defines always (after error-longjmps) - close all files (after error-longjmps) - tccpe.c: free imports always - libtcc.c: call tcc_memstats only after all states have been deleted.
This commit is contained in:
grischka
parent
a4a20360e9
commit
13056da039
17
libtcc.c
17
libtcc.c
@ -32,6 +32,8 @@ ST_DATA int tcc_ext = 1;
|
||||
/* XXX: get rid of this ASAP */
|
||||
ST_DATA struct TCCState *tcc_state;
|
||||
|
||||
static int nb_states;
|
||||
|
||||
/********************************************************/
|
||||
|
||||
#ifdef ONE_SOURCE
|
||||
@ -509,6 +511,7 @@ static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
|
||||
/* default case: stderr */
|
||||
if (s1->ppfp) /* print a newline during tcc -E */
|
||||
fprintf(s1->ppfp, "\n"), fflush(s1->ppfp);
|
||||
fflush(stdout); /* flush -v output */
|
||||
fprintf(stderr, "%s\n", buf);
|
||||
fflush(stderr); /* print error/warning now (win32) */
|
||||
} else {
|
||||
@ -623,17 +626,18 @@ static int tcc_compile(TCCState *s1)
|
||||
{
|
||||
Sym *define_start;
|
||||
|
||||
preprocess_start(s1);
|
||||
define_start = define_stack;
|
||||
|
||||
if (setjmp(s1->error_jmp_buf) == 0) {
|
||||
s1->nb_errors = 0;
|
||||
s1->error_set_jmp_enabled = 1;
|
||||
|
||||
preprocess_start(s1);
|
||||
tccgen_start(s1);
|
||||
|
||||
#ifdef INC_DEBUG
|
||||
printf("%s: **** new file\n", file->filename);
|
||||
#endif
|
||||
|
||||
ch = file->buf_ptr[0];
|
||||
tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
|
||||
parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM | PARSE_FLAG_TOK_STR;
|
||||
@ -641,13 +645,17 @@ static int tcc_compile(TCCState *s1)
|
||||
decl(VT_CONST);
|
||||
if (tok != TOK_EOF)
|
||||
expect("declaration");
|
||||
/* reset define stack, but keep -D and built-ins */
|
||||
/* free defines here already on behalf of of M.M.'s possibly existing
|
||||
experimental preprocessor implementation. The normal call below
|
||||
is still there to free after error-longjmp */
|
||||
free_defines(define_start);
|
||||
tccgen_end(s1);
|
||||
}
|
||||
s1->error_set_jmp_enabled = 0;
|
||||
|
||||
free_inline_functions(s1);
|
||||
/* reset define stack, but keep -D and built-ins */
|
||||
free_defines(define_start);
|
||||
sym_pop(&global_stack, NULL, 0);
|
||||
sym_pop(&local_stack, NULL, 0);
|
||||
return s1->nb_errors != 0 ? -1 : 0;
|
||||
@ -724,6 +732,7 @@ LIBTCCAPI TCCState *tcc_new(void)
|
||||
if (!s)
|
||||
return NULL;
|
||||
tcc_state = s;
|
||||
++nb_states;
|
||||
|
||||
s->alacarte_link = 1;
|
||||
s->nocommon = 1;
|
||||
@ -897,6 +906,7 @@ LIBTCCAPI void tcc_delete(TCCState *s1)
|
||||
dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes);
|
||||
dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
|
||||
dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
|
||||
dynarray_reset(&s1->cmd_include_files, &s1->nb_cmd_include_files);
|
||||
|
||||
tcc_free(s1->tcc_lib_path);
|
||||
tcc_free(s1->soname);
|
||||
@ -915,6 +925,7 @@ LIBTCCAPI void tcc_delete(TCCState *s1)
|
||||
#endif
|
||||
|
||||
tcc_free(s1);
|
||||
if (0 == --nb_states)
|
||||
tcc_memstats(bench);
|
||||
}
|
||||
|
||||
|
||||
3
tccasm.c
3
tccasm.c
@ -999,14 +999,13 @@ ST_FUNC int tcc_assemble(TCCState *s1, int do_preprocess)
|
||||
Sym *define_start;
|
||||
int ret;
|
||||
|
||||
define_start = define_stack;
|
||||
preprocess_start(s1);
|
||||
|
||||
/* default section is text */
|
||||
cur_text_section = text_section;
|
||||
ind = cur_text_section->data_offset;
|
||||
|
||||
define_start = define_stack;
|
||||
|
||||
/* an elf symbol of type STT_FILE must be put so that STB_LOCAL
|
||||
symbols can be safely used */
|
||||
put_elf_sym(symtab_section, 0, 0,
|
||||
|
||||
14
tccpe.c
14
tccpe.c
@ -770,6 +770,16 @@ found_dll:
|
||||
return s;
|
||||
}
|
||||
|
||||
void pe_free_imports(struct pe_info *pe)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < pe->imp_count; ++i) {
|
||||
struct pe_import_info *p = pe->imp_info[i];
|
||||
dynarray_reset(&p->symbols, &p->sym_count);
|
||||
}
|
||||
dynarray_reset(&pe->imp_info, &pe->imp_count);
|
||||
}
|
||||
|
||||
/*----------------------------------------------------------------------------*/
|
||||
static void pe_build_imports(struct pe_info *pe)
|
||||
{
|
||||
@ -861,9 +871,7 @@ static void pe_build_imports(struct pe_info *pe)
|
||||
ent_ptr += sizeof (ADDR3264);
|
||||
}
|
||||
dll_ptr += sizeof(IMAGE_IMPORT_DESCRIPTOR);
|
||||
dynarray_reset(&p->symbols, &p->sym_count);
|
||||
}
|
||||
dynarray_reset(&pe->imp_info, &pe->imp_count);
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------- */
|
||||
@ -1897,6 +1905,8 @@ ST_FUNC int pe_output_file(TCCState *s1, const char *filename)
|
||||
#endif
|
||||
}
|
||||
|
||||
pe_free_imports(&pe);
|
||||
|
||||
#ifdef PE_PRINT_SECTIONS
|
||||
pe_print_sections(s1, "tcc.log");
|
||||
#endif
|
||||
|
||||
16
tccpp.c
16
tccpp.c
@ -1342,7 +1342,8 @@ ST_FUNC void free_defines(Sym *b)
|
||||
sym_free(top);
|
||||
}
|
||||
|
||||
/* restore remaining (-D or predefined) symbols */
|
||||
/* restore remaining (-D or predefined) symbols if they were
|
||||
#undef'd in the file */
|
||||
while (b) {
|
||||
int v = b->v;
|
||||
if (v >= TOK_IDENT && v < tok_ident) {
|
||||
@ -3468,24 +3469,23 @@ ST_INLN void unget_tok(int last_tok)
|
||||
ST_FUNC void preprocess_start(TCCState *s1)
|
||||
{
|
||||
char *buf;
|
||||
|
||||
s1->include_stack_ptr = s1->include_stack;
|
||||
/* XXX: move that before to avoid having to initialize
|
||||
file->ifdef_stack_ptr ? */
|
||||
s1->ifdef_stack_ptr = s1->ifdef_stack;
|
||||
file->ifdef_stack_ptr = s1->ifdef_stack_ptr;
|
||||
pp_once++;
|
||||
|
||||
pvtop = vtop = vstack - 1;
|
||||
s1->pack_stack[0] = 0;
|
||||
s1->pack_stack_ptr = s1->pack_stack;
|
||||
|
||||
set_idnum('$', s1->dollars_in_identifiers ? IS_ID : 0);
|
||||
set_idnum('.', (parse_flags & PARSE_FLAG_ASM_FILE) ? IS_ID : 0);
|
||||
|
||||
buf = tcc_malloc(3 + strlen(file->filename));
|
||||
sprintf(buf, "\"%s\"", file->filename);
|
||||
tcc_undefine_symbol(s1, "__BASE_FILE__");
|
||||
tcc_define_symbol(s1, "__BASE_FILE__", buf);
|
||||
tcc_free(buf);
|
||||
|
||||
if (s1->nb_cmd_include_files) {
|
||||
CString cstr;
|
||||
int i;
|
||||
@ -3558,6 +3558,9 @@ ST_FUNC void tccpp_delete(TCCState *s)
|
||||
end_macro();
|
||||
macro_ptr = NULL;
|
||||
|
||||
while (file)
|
||||
tcc_close();
|
||||
|
||||
/* free tokens */
|
||||
n = tok_ident - TOK_IDENT;
|
||||
for(i = 0; i < n; i++)
|
||||
@ -3712,7 +3715,9 @@ ST_FUNC int tcc_preprocess(TCCState *s1)
|
||||
const char *p;
|
||||
Sym *define_start;
|
||||
|
||||
define_start = define_stack;
|
||||
preprocess_start(s1);
|
||||
|
||||
ch = file->buf_ptr[0];
|
||||
tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
|
||||
parse_flags = PARSE_FLAG_PREPROCESS
|
||||
@ -3721,7 +3726,6 @@ ST_FUNC int tcc_preprocess(TCCState *s1)
|
||||
| PARSE_FLAG_SPACES
|
||||
| PARSE_FLAG_ACCEPT_STRAYS
|
||||
;
|
||||
define_start = define_stack;
|
||||
|
||||
/* Credits to Fabrice Bellard's initial revision to demonstrate its
|
||||
capability to compile and run itself, provided all numbers are
|
||||
|
||||
Loading…
Reference in New Issue
Block a user