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Use the more standard files xalloc.h' and xmalloc.c' instead of

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Bison's `allocate.c' and `alloc.h'.  This patch was surprisingly
difficult and introduced a lot of core dump.  It turns out that
Bison used an implementation of `xmalloc' based on `calloc', and
at various places it does depend upon the initialization to 0.  I
have not tried to isolate the pertinent places, and all the former
calls to Bison's `xmalloc' are now using `XCALLOC'.  Someday,
someone should address this issue.
* src/allocate.c, src/alloc.h, m4/bison-decl.m4: Remove.
* lib/xmalloc.c, lib/xalloc.h, m4/malloc.m4, m4/realloc.m4: New
files.
Adjust dependencies.
* src/warshall.h: New file.
Propagate.
This commit is contained in:
Akim Demaille
2000-10-02 08:48:32 +00:00
parent 340ef48922
commit d7913476c4
28 changed files with 593 additions and 438 deletions
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30
src/reduce.c
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@@ -29,7 +29,7 @@
#include "getargs.h"
#include "files.h"
#include "gram.h"
#include "alloc.h"
#include "xalloc.h"
#include "complain.h"
#include "reduce.h"
#include "reader.h"
@@ -122,7 +122,7 @@ useless_nonterminals (void)
/* N is set as built. Np is set being built this iteration. P is
set of all productions which have a RHS all in N. */
Np = NEW2 (WORDSIZE (nvars), unsigned);
Np = XCALLOC (unsigned, WORDSIZE (nvars));
/* The set being computed is a set of nonterminals which can derive
the empty string or strings consisting of all terminals. At each
@@ -162,7 +162,7 @@ useless_nonterminals (void)
Np = N;
N = Ns;
}
FREE (N);
XFREE (N);
N = Np;
}
@@ -198,8 +198,8 @@ inaccessable_symbols (void)
terminals are printed (if running in verbose mode) so that the
user can know. */
Vp = NEW2 (WORDSIZE (nsyms), unsigned);
Pp = NEW2 (WORDSIZE (nrules + 1), unsigned);
Vp = XCALLOC (unsigned, WORDSIZE (nsyms));
Pp = XCALLOC (unsigned, WORDSIZE (nrules + 1));
/* If the start symbol isn't useful, then nothing will be useful. */
if (!BITISSET (N, start_symbol - ntokens))
@@ -236,7 +236,7 @@ inaccessable_symbols (void)
}
end_iteration:
FREE (V);
XFREE (V);
V = Vp;
/* Tokens 0, 1, and 2 are internal to Bison. Consider them useful. */
@@ -244,7 +244,7 @@ end_iteration:
SETBIT (V, 1); /* error token */
SETBIT (V, 2); /* some undefined token */
FREE (P);
XFREE (P);
P = Pp;
nuseful_productions = bits_size (P, WORDSIZE (nrules + 1));
@@ -340,7 +340,7 @@ reduce_grammar_tables (void)
number. -1 in the map means it was useless and is being
eliminated. */
nontermmap = NEW2 (nvars, short) - ntokens;
nontermmap = XCALLOC (short, nvars) - ntokens;
for (i = ntokens; i < nsyms; i++)
nontermmap[i] = -1;
@@ -513,10 +513,10 @@ reduce_grammar (void)
/* Allocate the global sets used to compute the reduced grammar */
N = NEW2 (WORDSIZE (nvars), unsigned);
P = NEW2 (WORDSIZE (nrules + 1), unsigned);
V = NEW2 (WORDSIZE (nsyms), unsigned);
V1 = NEW2 (WORDSIZE (nsyms), unsigned);
N = XCALLOC (unsigned, WORDSIZE (nvars));
P = XCALLOC (unsigned, WORDSIZE (nrules + 1));
V = XCALLOC (unsigned, WORDSIZE (nsyms));
V1 = XCALLOC (unsigned, WORDSIZE (nsyms));
useless_nonterminals ();
inaccessable_symbols ();
@@ -558,7 +558,7 @@ reduce_grammar (void)
done_reducing:
/* Free the global sets used to compute the reduced grammar */
FREE (N);
FREE (V);
FREE (P);
XFREE (N);
XFREE (V);
XFREE (P);
}