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wpp: Handle memory allocation failures in tokens management code.

This commit is contained in:
Matteo Bruni 2009-09-28 20:48:36 +02:00 committed by Alexandre Julliard
parent 9b61ca1c0f
commit b7a2d2da3a
3 changed files with 71 additions and 16 deletions
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2
libs/wpp/ppl.l
View File

@ -437,7 +437,7 @@ includelogicentry_t *pp_includelogiclist = NULL;
/*
* Handle left side of #define
*/
<pp_def>{cident}\( ppy_lval.cptr = pp_xstrdup(ppy_text); ppy_lval.cptr[ppy_leng-1] = '\0'; yy_pp_state(pp_macro); return tMACRO;
<pp_def>{cident}\( ppy_lval.cptr = pp_xstrdup(ppy_text); if(ppy_lval.cptr) ppy_lval.cptr[ppy_leng-1] = '\0'; yy_pp_state(pp_macro); return tMACRO;
<pp_def>{cident} ppy_lval.cptr = pp_xstrdup(ppy_text); yy_pp_state(pp_define); return tDEFINE;
<pp_def>{ws}+ ;
<pp_def>\\\r?\n newline(0);

48
libs/wpp/ppy.y
View File

@ -295,12 +295,18 @@ preprocessor
| tPRAGMA opt_text tNL { fprintf(ppy_out, "#pragma %s\n", $2 ? $2 : ""); free($2); }
| tPPIDENT opt_text tNL { if(pp_status.pedantic) ppy_warning("#ident ignored (arg: '%s')", $2); free($2); }
| tRCINCLUDE tRCINCLUDEPATH {
if($2)
{
int nl=strlen($2) +3;
char *fn=pp_xmalloc(nl);
if(fn)
{
sprintf(fn,"\"%s\"",$2);
free($2);
pp_do_include(fn,1);
}
free($2);
}
}
| tRCINCLUDE tDQSTRING {
pp_do_include($2,1);
}
@ -361,7 +367,7 @@ mtext : tLITERAL { $$ = new_mtext($1, 0, exp_text); }
int mat = marg_index($1);
if(mat >= 0)
$$ = new_mtext(NULL, mat, exp_subst);
else
else if($1)
$$ = new_mtext($1, 0, exp_text);
}
;
@ -546,6 +552,8 @@ static int boolean(cval_t *v)
static marg_t *new_marg(char *str, def_arg_t type)
{
marg_t *ma = pp_xmalloc(sizeof(marg_t));
if(!ma)
return NULL;
ma->arg = str;
ma->type = type;
ma->nnl = 0;
@ -554,16 +562,27 @@ static marg_t *new_marg(char *str, def_arg_t type)
static marg_t *add_new_marg(char *str, def_arg_t type)
{
marg_t *ma = new_marg(str, type);
marg_t **new_macro_args;
marg_t *ma;
if(!str)
return NULL;
new_macro_args = pp_xrealloc(macro_args, (nmacro_args+1) * sizeof(macro_args[0]));
if(!new_macro_args)
return NULL;
macro_args = new_macro_args;
ma = new_marg(str, type);
if(!ma)
return NULL;
macro_args[nmacro_args] = ma;
nmacro_args++;
macro_args = pp_xrealloc(macro_args, nmacro_args * sizeof(macro_args[0]));
macro_args[nmacro_args-1] = ma;
return ma;
}
static int marg_index(char *id)
{
int t;
if(!id)
return -1;
for(t = 0; t < nmacro_args; t++)
{
if(!strcmp(id, macro_args[t]->arg))
@ -658,9 +677,22 @@ static mtext_t *combine_mtext(mtext_t *tail, mtext_t *mtp)
static char *merge_text(char *s1, char *s2)
{
int l1 = strlen(s1);
int l2 = strlen(s2);
s1 = pp_xrealloc(s1, l1+l2+1);
int l1;
int l2;
char *snew;
if(!s1)
return s2;
if(!s2)
return s1;
l1 = strlen(s1);
l2 = strlen(s2);
snew = pp_xrealloc(s1, l1+l2+1);
if(!snew)
{
free(s2);
return s1;
}
s1 = snew;
memcpy(s1+l1, s2, l2+1);
free(s2);
return s1;

29
libs/wpp/preproc.c
View File

@ -126,9 +126,12 @@ static int pphash(const char *str)
pp_entry_t *pplookup(const char *ident)
{
int idx = pphash(ident);
int idx;
pp_entry_t *ppp;
if(!ident)
return NULL;
idx = pphash(ident);
for(ppp = pp_def_state->defines[idx]; ppp; ppp = ppp->next)
{
if(!strcmp(ident, ppp->ident))
@ -220,9 +223,12 @@ pp_entry_t *pp_add_define(char *def, char *text)
{
int len;
char *cptr;
int idx = pphash(def);
int idx;
pp_entry_t *ppp;
if(!def)
return NULL;
idx = pphash(def);
if((ppp = pplookup(def)) != NULL)
{
if(pp_status.pedantic)
@ -230,11 +236,18 @@ pp_entry_t *pp_add_define(char *def, char *text)
pp_del_define(def);
}
ppp = pp_xmalloc(sizeof(pp_entry_t));
if(!ppp)
return NULL;
memset( ppp, 0, sizeof(*ppp) );
ppp->ident = def;
ppp->type = def_define;
ppp->subst.text = text;
ppp->filename = pp_xstrdup(pp_status.input ? pp_status.input : "<internal or cmdline>");
if(!ppp->filename)
{
free(ppp);
return NULL;
}
ppp->linenumber = pp_status.input ? pp_status.line_number : 0;
ppp->next = pp_def_state->defines[idx];
pp_def_state->defines[idx] = ppp;
@ -262,9 +275,12 @@ pp_entry_t *pp_add_define(char *def, char *text)
pp_entry_t *pp_add_macro(char *id, marg_t *args[], int nargs, mtext_t *exp)
{
int idx = pphash(id);
int idx;
pp_entry_t *ppp;
if(!id)
return NULL;
idx = pphash(id);
if((ppp = pplookup(id)) != NULL)
{
if(pp_status.pedantic)
@ -272,6 +288,8 @@ pp_entry_t *pp_add_macro(char *id, marg_t *args[], int nargs, mtext_t *exp)
pp_del_define(id);
}
ppp = pp_xmalloc(sizeof(pp_entry_t));
if(!ppp)
return NULL;
memset( ppp, 0, sizeof(*ppp) );
ppp->ident = id;
ppp->type = def_macro;
@ -279,6 +297,11 @@ pp_entry_t *pp_add_macro(char *id, marg_t *args[], int nargs, mtext_t *exp)
ppp->nargs = nargs;
ppp->subst.mtext= exp;
ppp->filename = pp_xstrdup(pp_status.input ? pp_status.input : "<internal or cmdline>");
if(!ppp->filename)
{
free(ppp);
return NULL;
}
ppp->linenumber = pp_status.input ? pp_status.line_number : 0;
ppp->next = pp_def_state->defines[idx];
pp_def_state->defines[idx] = ppp;