diff options
Diffstat (limited to 'editors/awk.c')
| -rw-r--r-- | editors/awk.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/editors/awk.c b/editors/awk.c index bc95c41..aa485c7 100644 --- a/editors/awk.c +++ b/editors/awk.c @@ -555,8 +555,9 @@ struct globals { //we are reusing ahash as fdhash, via define (see later) const char *g_progname; int g_lineno; - int nfields; - unsigned maxfields; + int num_fields; /* number of existing $N's */ + unsigned num_alloc_fields; /* current size of Fields[] */ + /* NB: Fields[0] corresponds to $1, not to $0 */ var *Fields; char *g_pos; char g_saved_ch; @@ -631,8 +632,8 @@ struct globals2 { // for fdhash in execution stage. #define g_progname (G1.g_progname ) #define g_lineno (G1.g_lineno ) -#define nfields (G1.nfields ) -#define maxfields (G1.maxfields ) +#define num_fields (G1.num_fields ) +#define num_alloc_fields (G1.num_alloc_fields) #define Fields (G1.Fields ) #define g_pos (G1.g_pos ) #define g_saved_ch (G1.g_saved_ch ) @@ -1966,30 +1967,30 @@ static void fsrealloc(int size) { int i, newsize; - if ((unsigned)size >= maxfields) { + if ((unsigned)size >= num_alloc_fields) { /* Sanity cap, easier than catering for over/underflows */ if ((unsigned)size > 0xffffff) bb_die_memory_exhausted(); - i = maxfields; - maxfields = size + 16; + i = num_alloc_fields; + num_alloc_fields = size + 16; - newsize = maxfields * sizeof(Fields[0]); + newsize = num_alloc_fields * sizeof(Fields[0]); debug_printf_eval("fsrealloc: xrealloc(%p, %u)\n", Fields, newsize); Fields = xrealloc(Fields, newsize); debug_printf_eval("fsrealloc: Fields=%p..%p\n", Fields, (char*)Fields + newsize - 1); /* ^^^ did Fields[] move? debug aid for L.v getting "upstaged" by R.v in evaluate() */ - for (; i < maxfields; i++) { - Fields[i].type = VF_SPECIAL; + for (; i < num_alloc_fields; i++) { + Fields[i].type = VF_SPECIAL | VF_DIRTY; Fields[i].string = NULL; } } - /* if size < nfields, clear extra field variables */ - for (i = size; i < nfields; i++) { + /* if size < num_fields, clear extra field variables */ + for (i = size; i < num_fields; i++) { clrvar(Fields + i); } - nfields = size; + num_fields = size; } static int regexec1_nonempty(const regex_t *preg, const char *s, regmatch_t pmatch[]) @@ -2126,7 +2127,7 @@ static void split_f0(void) /* set NF manually to avoid side effects */ clrvar(intvar[NF]); intvar[NF]->type = VF_NUMBER | VF_SPECIAL; - intvar[NF]->number = nfields; + intvar[NF]->number = num_fields; #undef fstrings } @@ -2976,7 +2977,7 @@ static var *evaluate(node *op, var *res) syntax_error(EMSG_TOO_FEW_ARGS); L.v = evaluate(op1, TMPVAR0); /* Does L.v point to $n variable? */ - if ((size_t)(L.v - Fields) < maxfields) { + if ((size_t)(L.v - Fields) < num_alloc_fields) { /* yes, remember where Fields[] is */ old_Fields_ptr = Fields; } @@ -3517,7 +3518,7 @@ static var *evaluate(node *op, var *res) res = intvar[F0]; } else { split_f0(); - if (i > nfields) + if (i > num_fields) fsrealloc(i); res = &Fields[i - 1]; } |