shithub: femtolisp

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ref: 2601e0b75a29fd1d112bc6049dee5d131dcb1d93
parent: 79bb6bfb032a4cd74bdbaf99d46a304d80506c46
author: Sigrid Solveig Haflínudóttir <[email protected]>
date: Wed Mar 15 13:43:54 EDT 2023

simplify ctypes logic a bit; remove lerror

--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@
 
 TARG=flisp
 LLT=llt/libllt.a
-CFLAGS?=-O2 -pipe -g
+CFLAGS?=-O2 -g
 CFLAGS+=-Wall -Wextra -falign-functions -Wno-strict-aliasing -std=c99 -D_DEFAULT_SOURCE
 LDFLAGS?=
 LDFLAGS+=${LLT} -lm
--- a/builtins.c
+++ b/builtins.c
@@ -275,10 +275,10 @@
     fixnum_t i;
     value_t f, v;
     if (nargs == 0)
-        lerror(ArgError, "vector.alloc: too few arguments");
+        lerrorf(ArgError, "vector.alloc: too few arguments");
     i = (fixnum_t)toulong(args[0], "vector.alloc");
     if (i < 0)
-        lerror(ArgError, "vector.alloc: invalid size");
+        lerrorf(ArgError, "vector.alloc: invalid size");
     v = alloc_vector((unsigned)i, 0);
     if (nargs == 2)
         f = args[1];
@@ -376,7 +376,7 @@
         result = setenv(name, val, 1);
     }
     if (result != 0)
-        lerror(ArgError, "os.setenv: invalid environment variable");
+        lerrorf(ArgError, "os.setenv: invalid environment variable");
     return FL_T;
 }
 
--- a/cvalues.c
+++ b/cvalues.c
@@ -6,8 +6,6 @@
 #define NWORDS(sz) (((sz)+3)>>2)
 #endif
 
-static int ALIGN2, ALIGN4, ALIGN8, ALIGNPTR;
-
 value_t int8sym, uint8sym, int16sym, uint16sym, int32sym, uint32sym;
 value_t int64sym, uint64sym;
 value_t longsym, ulongsym, bytesym, wcharsym;
@@ -52,7 +50,7 @@
         size_t nn = (maxfinalizers==0 ? 256 : maxfinalizers*2);
         cvalue_t **temp = realloc(Finalizers, nn*sizeof(cvalue_t*));
         if (temp == NULL)
-            lerror(MemoryError, "out of memory");
+            lerrorf(MemoryError, "out of memory");
         Finalizers = temp;
         maxfinalizers = nn;
     }
@@ -134,9 +132,9 @@
     cvalue_t *pcv;
     int str=0;
 
-    if (valid_numtype(type->numtype)) {
+    if (valid_numtype(type->numtype))
         return cprim(type, sz);
-    }
+
     if (type->eltype == bytetype) {
         if (sz == 0)
             return symbol_value(emptystringsym);
@@ -351,7 +349,7 @@
                 return 0;
             }
         }
-        lerror(ArgError, "enum: invalid enum value");
+        lerrorf(ArgError, "enum: invalid enum value");
     }
     if (isfixnum(arg)) {
         n = (int)numval(arg);
@@ -364,7 +362,7 @@
         type_error("enum", "number", arg);
     }
     if ((unsigned)n >= vector_size(syms))
-        lerror(ArgError, "enum: value out of range");
+        lerrorf(ArgError, "enum: value out of range");
     *(int*)dest = n;
     return 0;
 }
@@ -409,7 +407,7 @@
     if (iscons(cdr_(cdr_(type)))) {
         size_t tc = toulong(car_(cdr_(cdr_(type))), "array");
         if (tc != cnt)
-            lerror(ArgError, "array: size mismatch");
+            lerrorf(ArgError, "array: size mismatch");
     }
 
     sz = elsize * cnt;
@@ -432,7 +430,7 @@
             arg = cdr_(arg);
         }
         if (i != cnt)
-            lerror(ArgError, "array: size mismatch");
+            lerrorf(ArgError, "array: size mismatch");
         return 0;
     }
     else if (iscvalue(arg)) {
@@ -443,12 +441,12 @@
                 if (cv_len(cv) == sz)
                     memcpy(dest, cv_data(cv), sz);
                 else
-                    lerror(ArgError, "array: size mismatch");
+                    lerrorf(ArgError, "array: size mismatch");
                 return 0;
             }
             else {
                 // TODO: initialize array from different type elements
-                lerror(ArgError, "array: element type mismatch");
+                lerrorf(ArgError, "array: element type mismatch");
             }
         }
     }
@@ -533,42 +531,23 @@
 // *palign is an output argument giving the alignment required by type
 size_t ctype_sizeof(value_t type, int *palign)
 {
-    if (type == int8sym || type == uint8sym || type == bytesym) {
-        *palign = 1;
-        return 1;
+    symbol_t *s;
+
+    if (issymbol(type) && (s = ptr(type)) != NULL && valid_numtype(s->numtype)) {
+         *palign = s->align;
+        return s->size;
     }
-    if (type == int16sym || type == uint16sym) {
-        *palign = ALIGN2;
-        return 2;
-    }
-    if (type == int32sym || type == uint32sym || type == wcharsym ||
-        type == floatsym) {
-        *palign = ALIGN4;
-        return 4;
-    }
-    if (type == int64sym || type == uint64sym || type == doublesym) {
-        *palign = ALIGN8;
-        return 8;
-    }
-    if (type == longsym || type == ulongsym) {
-#if defined(ULONG64)
-        *palign = ALIGN8;
-        return 8;
-#else
-        *palign = ALIGN4;
-        return 4;
-#endif
-    }
+
     if (iscons(type)) {
         value_t hed = car_(type);
         if (hed == pointersym || hed == cfunctionsym) {
-            *palign = ALIGNPTR;
+            *palign = sizeof(struct { char a; void *i; }) - sizeof(void*);
             return sizeof(void*);
         }
         if (hed == arraysym) {
             value_t t = car(cdr_(type));
             if (!iscons(cdr_(cdr_(type))))
-                lerror(ArgError, "sizeof: incomplete type");
+                lerrorf(ArgError, "sizeof: incomplete type");
             value_t n = car_(cdr_(cdr_(type)));
             size_t sz = toulong(n, "sizeof");
             return sz * ctype_sizeof(t, palign);
@@ -580,11 +559,12 @@
             return cvalue_union_size(type, palign);
         }
         else if (hed == enumsym) {
-            *palign = ALIGN4;
-            return 4;
+            *palign = sizeof(struct { char c; numerictype_t e; }) - sizeof(numerictype_t);
+            return sizeof(numerictype_t);
         }
     }
-    lerror(ArgError, "sizeof: invalid c type");
+
+    lerrorf(ArgError, "sizeof: invalid c type");
     return 0;
 }
 
@@ -702,11 +682,11 @@
 {
     argcount("copy", nargs, 1);
     if (iscons(args[0]) || isvector(args[0]))
-        lerror(ArgError, "copy: argument must be a leaf atom");
+        lerrorf(ArgError, "copy: argument must be a leaf atom");
     if (!iscvalue(args[0]))
         return args[0];
     if (!cv_isPOD((cvalue_t*)ptr(args[0])))
-        lerror(ArgError, "copy: argument must be a plain-old-data type");
+        lerrorf(ArgError, "copy: argument must be a plain-old-data type");
     return cvalue_copy(args[0]);
 }
 
@@ -723,52 +703,11 @@
     cvinitfunc_t f=type->init;
 
     if (f == NULL)
-        lerror(ArgError, "c-value: invalid c type");
+        lerrorf(ArgError, "c-value: invalid c type");
 
     f(type, v, dest);
 }
 
-static numerictype_t sym_to_numtype(value_t type)
-{
-    if (type == int8sym)
-        return T_INT8;
-    else if (type == uint8sym || type == bytesym)
-        return T_UINT8;
-    else if (type == int16sym)
-        return T_INT16;
-    else if (type == uint16sym)
-        return T_UINT16;
-#if defined(ULONG64)
-    else if (type == int32sym || type == wcharsym)
-#else
-    else if (type == int32sym || type == wcharsym || type == longsym)
-#endif
-        return T_INT32;
-#if defined(ULONG64)
-    else if (type == uint32sym)
-#else
-    else if (type == uint32sym || type == ulongsym)
-#endif
-        return T_UINT32;
-#if defined(ULONG64)
-    else if (type == int64sym || type == longsym)
-#else
-    else if (type == int64sym)
-#endif
-        return T_INT64;
-#if defined(ULONG64)
-    else if (type == uint64sym || type == ulongsym)
-#else
-    else if (type == uint64sym)
-#endif
-        return T_UINT64;
-    else if (type == floatsym)
-        return T_FLOAT;
-    else if (type == doublesym)
-        return T_DOUBLE;
-    return N_NUMTYPES;
-}
-
 // (new type . args)
 // this provides (1) a way to allocate values with a shared type for
 // efficiency, (2) a uniform interface for allocating cvalues of any
@@ -928,43 +867,58 @@
     { NULL, NULL }
 };
 
-#define cv_intern(tok) tok##sym = symbol(#tok)
-#define ctor_cv_intern(tok) \
-    cv_intern(tok);set(tok##sym, cbuiltin(#tok, cvalue_##tok))
-
-#define mk_primtype(name,ctype) \
-  name##type=get_type(name##sym);name##type->init = cvalue_##ctype##_init
+#define cv_intern(tok)           \
+    do{                          \
+        tok##sym = symbol(#tok); \
+    }while(0)
+#define ctor_cv_intern(tok, nt, ctype)                               \
+    do{                                                              \
+        symbol_t *s;                                                 \
+        cv_intern(tok);                                              \
+        set(tok##sym, cbuiltin(#tok, cvalue_##tok));                 \
+        if (valid_numtype(nt)) {                                       \
+            s = ptr(tok##sym);                                           \
+            s->numtype = nt;                                             \
+            s->size = sizeof(ctype);                                     \
+            s->align = sizeof(struct{char c; ctype x;}) - sizeof(ctype); \
+        } \
+    }while(0)
 
+#define mk_primtype(name, ctype) \
+    do{ \
+        name##type=get_type(name##sym); \
+        name##type->init = cvalue_##ctype##_init; \
+    }while(0)
+
 static void cvalues_init(void)
 {
     htable_new(&TypeTable, 256);
     htable_new(&reverse_dlsym_lookup_table, 256);
 
-    // compute struct field alignment required for primitives
-    ALIGN2   = sizeof(struct { char a; int16_t i; }) - 2;
-    ALIGN4   = sizeof(struct { char a; int32_t i; }) - 4;
-    ALIGN8   = sizeof(struct { char a; int64_t i; }) - 8;
-    ALIGNPTR = sizeof(struct { char a; void   *i; }) - sizeof(void*);
-
     builtintype = define_opaque_type(builtinsym, sizeof(builtin_t), NULL, NULL);
 
-    ctor_cv_intern(int8);
-    ctor_cv_intern(uint8);
-    ctor_cv_intern(int16);
-    ctor_cv_intern(uint16);
-    ctor_cv_intern(int32);
-    ctor_cv_intern(uint32);
-    ctor_cv_intern(int64);
-    ctor_cv_intern(uint64);
-    ctor_cv_intern(byte);
-    ctor_cv_intern(wchar);
-    ctor_cv_intern(long);
-    ctor_cv_intern(ulong);
-    ctor_cv_intern(float);
-    ctor_cv_intern(double);
+    ctor_cv_intern(int8, T_INT8, int8_t);
+    ctor_cv_intern(uint8, T_UINT8, uint8_t);
+    ctor_cv_intern(int16, T_INT16, int16_t);
+    ctor_cv_intern(uint16, T_UINT16, uint16_t);
+    ctor_cv_intern(int32, T_INT32, int32_t);
+    ctor_cv_intern(uint32, T_UINT32, uint32_t);
+    ctor_cv_intern(int64, T_INT64, int64_t);
+    ctor_cv_intern(uint64, T_UINT64, uint64_t);
+    ctor_cv_intern(byte, T_UINT8, uint8_t);
+    ctor_cv_intern(wchar, T_INT32, int32_t);
+#if defined(ULONG64)
+    ctor_cv_intern(long, T_INT64, int64_t);
+    ctor_cv_intern(ulong, T_UINT64, uint64_t);
+#else
+    ctor_cv_intern(long, T_INT32, int32_t);
+    ctor_cv_intern(ulong, T_UINT32, uint32_t);
+#endif
+    ctor_cv_intern(float, T_FLOAT, float);
+    ctor_cv_intern(double, T_DOUBLE, double);
 
-    ctor_cv_intern(array);
-    ctor_cv_intern(enum);
+    ctor_cv_intern(array, NONNUMERIC, int);
+    ctor_cv_intern(enum, NONNUMERIC, int);
     cv_intern(pointer);
     cv_intern(struct);
     cv_intern(union);
@@ -1270,10 +1224,10 @@
     return 1;
 }
 
-static void DivideByZeroError() __attribute__ ((__noreturn__));
+static void DivideByZeroError(void) __attribute__ ((__noreturn__));
 static void DivideByZeroError(void)
 {
-    lerror(DivideError, "/: division by zero");
+    lerrorf(DivideError, "/: division by zero");
 }
 
 static value_t fl_div2(value_t a, value_t b)
--- a/flisp.c
+++ b/flisp.c
@@ -189,14 +189,6 @@
     fl_raise(fl_list2(e, msg));
 }
 
-void lerror(value_t e, const char *msg)
-{
-    PUSH(e);
-    value_t m = cvalue_static_cstring(msg);
-    e = POP();
-    fl_raise(fl_list2(e, m));
-}
-
 void type_error(char *fname, char *expected, value_t got)
 {
     fl_raise(fl_listn(4, TypeError, symbol(fname), symbol(expected), got));
@@ -239,19 +231,17 @@
     symbol_t *sym;
     size_t len = strlen(str);
 
-    sym = malloc(sizeof(*sym)-sizeof(void*) + len + 1);
+    sym = calloc(1, sizeof(*sym)-sizeof(void*) + len + 1);
     assert(((uintptr_t)sym & 0x7) == 0); // make sure malloc aligns 8
-    sym->left = sym->right = NULL;
-    sym->flags = 0;
+    sym->numtype = NONNUMERIC;
     if (fl_is_keyword_name(str, len)) {
         value_t s = tagptr(sym, TAG_SYM);
         setc(s, s);
-        sym->flags |= 0x2;
+        sym->flags |= FLAG_KEYWORD;
     }
     else {
         sym->binding = UNBOUND;
     }
-    sym->type = sym->dlcache = NULL;
     sym->hash = memhash32(str, len)^0xAAAAAAAA;
     memcpy(sym->name, str, len+1);
     return sym;
@@ -396,7 +386,7 @@
 void fl_gc_handle(value_t *pv)
 {
     if (N_GCHND >= N_GC_HANDLES)
-        lerror(MemoryError, "out of gc handles");
+        lerrorf(MemoryError, "out of gc handles");
     GCHandleStack[N_GCHND++] = pv;
 }
 
@@ -603,7 +593,7 @@
     size_t newsz = N_STACK + (N_STACK>>1);
     value_t *ns = realloc(Stack, newsz*sizeof(value_t));
     if (ns == NULL)
-        lerror(MemoryError, "stack overflow");
+        lerrorf(MemoryError, "stack overflow");
     Stack = ns;
     N_STACK = newsz;
 }
@@ -624,6 +614,8 @@
     }
     else if (isbuiltin(f)) {
         value_t tab = symbol_value(builtins_table_sym);
+        if (ptr(tab) == NULL)
+            lerrorf(UnboundError, "builtins table");
         Stack[SP-n-1] = vector_elt(tab, uintval(f));
         v = apply_cl(n);
     }
@@ -828,9 +820,9 @@
     value_t s4 = Stack[SP-4];
     value_t s5 = Stack[SP-5];
     if (nargs < nreq)
-        lerror(ArgError, "apply: too few arguments");
+        lerrorf(ArgError, "apply: too few arguments");
     if (extr > sizeof(args)/sizeof(args[0]))
-        lerror(ArgError, "apply: too many arguments");
+        lerrorf(ArgError, "apply: too many arguments");
     for (i=0; i < extr; i++) args[i] = UNBOUND;
     for (i=nreq; i < nargs; i++) {
         v = Stack[bp+i];
@@ -870,7 +862,7 @@
  no_kw:
     nrestargs = nargs - i;
     if (!va && nrestargs > 0)
-        lerror(ArgError, "apply: too many arguments");
+        lerrorf(ArgError, "apply: too many arguments");
     nargs = ntot + nrestargs;
     if (nrestargs)
         memmove(&Stack[bp+ntot], &Stack[bp+i], nrestargs*sizeof(value_t));
@@ -969,9 +961,9 @@
         do_argc:
             if (nargs != n) {
                 if (nargs > n)
-                    lerror(ArgError, "apply: too many arguments");
+                    lerrorf(ArgError, "apply: too many arguments");
                 else
-                    lerror(ArgError, "apply: too few arguments");
+                    lerrorf(ArgError, "apply: too few arguments");
             }
             NEXT_OP;
         OP(OP_VARGC)
@@ -992,7 +984,7 @@
                 }
             }
             else if (s < 0) {
-                lerror(ArgError, "apply: too few arguments");
+                lerrorf(ArgError, "apply: too few arguments");
             }
             else {
                 PUSH(0);
@@ -1729,10 +1721,10 @@
             i = GET_INT32(ip); ip+=4;
             n = GET_INT32(ip); ip+=4;
             if (nargs < i)
-                lerror(ArgError, "apply: too few arguments");
+                lerrorf(ArgError, "apply: too few arguments");
             if ((int32_t)n > 0) {
                 if (nargs > n)
-                    lerror(ArgError, "apply: too many arguments");
+                    lerrorf(ArgError, "apply: too many arguments");
             }
             else n = -n;
             if (n > nargs) {
@@ -2030,7 +2022,7 @@
             }
         }
         if (isgensym(fn->name))
-            lerror(ArgError, "function: name should not be a gensym");
+            lerrorf(ArgError, "function: name should not be a gensym");
     }
     return fv;
 }
@@ -2118,7 +2110,7 @@
 value_t fl_map1(value_t *args, uint32_t nargs)
 {
     if (nargs < 2)
-        lerror(ArgError, "map: too few arguments");
+        lerrorf(ArgError, "map: too few arguments");
     if (!iscons(args[1])) return NIL;
     value_t first, last, v;
     int64_t argSP = args-Stack;
--- a/flisp.h
+++ b/flisp.h
@@ -1,12 +1,30 @@
 #ifndef FLISP_H
 #define FLISP_H
 
+/* functions needed to implement the value interface (cvtable_t) */
+typedef enum {
+    T_INT8, T_UINT8,
+    T_INT16, T_UINT16,
+    T_INT32, T_UINT32,
+    T_INT64, T_UINT64,
+    T_FLOAT,
+    T_DOUBLE,
+} numerictype_t;
+
+#define NONNUMERIC (0xff)
+#define valid_numtype(v) ((v) <= T_DOUBLE)
+
 typedef uintptr_t value_t;
 typedef lltint_t fixnum_t;
+
 #ifdef BITS64
 #define T_FIXNUM T_INT64
+#define fits_fixnum(x) (((x)>>61) == 0 || (~((x)>>61)) == 0)
+#define mk_xlong mk_int64
 #else
 #define T_FIXNUM T_INT32
+#define fits_fixnum(x) (((x)>>29) == 0 || (~((x)>>29)) == 0)
+#define mk_xlong mk_long
 #endif
 
 typedef struct {
@@ -15,10 +33,13 @@
 } cons_t;
 
 typedef struct _symbol_t {
-    uintptr_t flags;
     value_t binding;   // global value binding
-    struct _fltype_t *type;
     uint32_t hash;
+    uint8_t numtype;
+    uint8_t size;
+    uint8_t align;
+    uint8_t flags;
+    struct _fltype_t *type;
     void *dlcache;     // dlsym address
     // below fields are private
     struct _symbol_t *left;
@@ -36,14 +57,22 @@
     uint32_t id;
 } gensym_t;
 
-#define TAG_NUM      0x0
-#define TAG_CPRIM    0x1
-#define TAG_FUNCTION 0x2
-#define TAG_VECTOR   0x3
-#define TAG_NUM1     0x4
-#define TAG_CVALUE   0x5
-#define TAG_SYM      0x6
-#define TAG_CONS     0x7
+enum {
+    TAG_NUM,
+    TAG_CPRIM,
+    TAG_FUNCTION,
+    TAG_VECTOR,
+    TAG_NUM1,
+    TAG_CVALUE,
+    TAG_SYM,
+    TAG_CONS,
+};
+
+enum {
+    FLAG_CONST = 1<<0,
+    FLAG_KEYWORD = 1<<1,
+};
+
 #define UNBOUND      ((value_t)0x1) // an invalid value
 #define TAG_FWD      UNBOUND
 #define tag(x) ((x)&0x7)
@@ -51,11 +80,6 @@
 #define tagptr(p,t) (((value_t)(p)) | (t))
 #define fixnum(x) ((value_t)((fixnum_t)(x))<<2)
 #define numval(x)  (((fixnum_t)(x))>>2)
-#if defined(BITS64)
-#define fits_fixnum(x) (((x)>>61) == 0 || (~((x)>>61)) == 0)
-#else
-#define fits_fixnum(x) (((x)>>29) == 0 || (~((x)>>29)) == 0)
-#endif
 #define fits_bits(x,b) (((x)>>(b-1)) == 0 || (~((x)>>(b-1))) == 0)
 #define uintval(x)  (((unsigned int)(x))>>3)
 #define builtin(n) tagptr((((int)n)<<3), TAG_FUNCTION)
@@ -94,11 +118,12 @@
 #define fn_name(f) (((value_t*)ptr(f))[3])
 
 #define set(s, v)  (((symbol_t*)ptr(s))->binding = (v))
-#define setc(s, v) do { ((symbol_t*)ptr(s))->flags |= 1; \
+#define setc(s, v) do { ((symbol_t*)ptr(s))->flags |= FLAG_CONST; \
                         ((symbol_t*)ptr(s))->binding = (v); } while (0)
-#define isconstant(s) ((s)->flags&0x1)
-#define iskeyword(s) ((s)->flags&0x2)
+#define isconstant(s) ((s)->flags&FLAG_CONST)
+#define iskeyword(s) ((s)->flags&FLAG_KEYWORD)
 #define symbol_value(s) (((symbol_t*)ptr(s))->binding)
+#define sym_to_numtype(s) (((symbol_t*)ptr(s))->numtype)
 #define ismanaged(v) ((((uint8_t*)ptr(v)) >= fromspace) && \
                       (((uint8_t*)ptr(v)) < fromspace+heapsize))
 #define isgensym(x)  (issymbol(x) && ismanaged(x))
@@ -188,7 +213,6 @@
     for(l__ca=1; l__ca; l__ca=0, fl_restorestate(&_ctx))
 
 void lerrorf(value_t e, char *format, ...) __attribute__ ((__noreturn__));
-void lerror(value_t e, const char *msg) __attribute__ ((__noreturn__));
 void fl_savestate(fl_exception_context_t *_ctx);
 void fl_restorestate(fl_exception_context_t *_ctx);
 void fl_raise(value_t e) __attribute__ ((__noreturn__));
@@ -209,12 +233,6 @@
     void (*print_traverse)(value_t self);
 } cvtable_t;
 
-/* functions needed to implement the value interface (cvtable_t) */
-typedef enum { T_INT8, T_UINT8, T_INT16, T_UINT16, T_INT32, T_UINT32,
-               T_INT64, T_UINT64, T_FLOAT, T_DOUBLE } numerictype_t;
-
-#define N_NUMTYPES ((int)T_DOUBLE+1)
-
 value_t relocate_lispvalue(value_t v);
 void print_traverse(value_t v);
 void fl_print_chr(char c, ios_t *f);
@@ -225,14 +243,14 @@
 
 typedef struct _fltype_t {
     value_t type;
-    numerictype_t numtype;
-    size_t size;
-    size_t elsz;
     cvtable_t *vtable;
     struct _fltype_t *eltype;  // for arrays
     struct _fltype_t *artype;  // (array this)
-    int marked;
     cvinitfunc_t init;
+    size_t size;
+    size_t elsz;
+    int marked;
+    numerictype_t numtype;
 } fltype_t;
 
 typedef struct {
@@ -278,7 +296,6 @@
 #define cvalue_len(v) cv_len((cvalue_t*)ptr(v))
 #define value2c(type, v) ((type)cv_data((cvalue_t*)ptr(v)))
 
-#define valid_numtype(v) ((v) < N_NUMTYPES)
 #define cp_class(cp)   ((cp)->type)
 #define cp_type(cp)    (cp_class(cp)->type)
 #define cp_numtype(cp) (cp_class(cp)->numtype)
@@ -339,12 +356,6 @@
 value_t mk_wchar(int32_t n);
 value_t return_from_uint64(uint64_t Uaccum);
 value_t return_from_int64(int64_t Saccum);
-
-#ifdef BITS64
-#define mk_xlong mk_int64
-#else
-#define mk_xlong mk_long
-#endif
 
 numerictype_t effective_numerictype(double r);
 double conv_to_double(void *data, numerictype_t tag);
--- a/flmain.c
+++ b/flmain.c
@@ -32,15 +32,11 @@
 
     fl_init(512*1024);
 
-#if defined(INITFILE)
-    snprintf(fname_buf, sizeof(fname_buf), "%s", INITFILE);
-#else
     value_t str = symbol_value(symbol("*install-dir*"));
     char *exedir = (str == UNBOUND ? NULL : cvalue_data(str));
     snprintf(fname_buf, sizeof(fname_buf), "%s%sflisp.boot",
         exedir ? exedir : "",
         exedir ? PATHSEPSTRING : "");
-#endif
 
     fl_gc_handle(&args[0]);
     fl_gc_handle(&args[1]);
--- a/iostream.c
+++ b/iostream.c
@@ -94,7 +94,7 @@
     value_t f = cvalue(iostreamtype, sizeof(ios_t));
     ios_t *s = value2c(ios_t*, f);
     if (ios_mem(s, 0) == NULL)
-        lerror(MemoryError, "buffer: could not allocate stream");
+        lerrorf(MemoryError, "buffer: could not allocate stream");
     return f;
 }
 
@@ -125,7 +125,7 @@
     ios_t *s = toiostream(args[0], "io.getc");
     uint32_t wc;
     if (ios_getutf8(s, &wc) == IOS_EOF)
-        //lerror(IOError, "io.getc: end of file reached");
+        //lerrorf(IOError, "io.getc: end of file reached");
         return FL_EOF;
     return mk_wchar(wc);
 }
@@ -158,7 +158,7 @@
         type_error("io.ungetc", "wchar", args[1]);
     uint32_t wc = *(uint32_t*)cp_data((cprim_t*)ptr(args[1]));
     if (wc >= 0x80) {
-        lerror(ArgError, "io_ungetc: unicode not yet supported");
+        lerrorf(ArgError, "io_ungetc: unicode not yet supported");
     }
     return fixnum(ios_ungetc((int)wc,s));
 }
@@ -244,7 +244,7 @@
     else {
         ft = get_type(args[1]);
         if (ft->eltype != NULL && !iscons(cdr_(cdr_(args[1]))))
-            lerror(ArgError, "io.read: incomplete type");
+            lerrorf(ArgError, "io.read: incomplete type");
         n = ft->size;
     }
     value_t cv = cvalue(ft, n);
@@ -253,7 +253,7 @@
     else data = cp_data((cprim_t*)ptr(cv));
     size_t got = ios_read(value2c(ios_t*,args[0]), data, n);
     if (got < n)
-        //lerror(IOError, "io.read: end of input reached");
+        //lerrorf(IOError, "io.read: end of input reached");
         return FL_EOF;
     return cv;
 }
@@ -280,7 +280,7 @@
     ios_t *s = toiostream(args[0], "io.write");
     if (iscprim(args[1]) && ((cprim_t*)ptr(args[1]))->type == wchartype) {
         if (nargs > 2)
-            lerror(ArgError,
+            lerrorf(ArgError,
                    "io.write: offset argument not supported for characters");
         uint32_t wc = *(uint32_t*)cp_data((cprim_t*)ptr(args[1]));
         return fixnum(ios_pututf8(s, wc));
@@ -400,7 +400,7 @@
     argcount("io.tostring!", nargs, 1);
     ios_t *src = toiostream(args[0], "io.tostring!");
     if (src->bm != bm_mem)
-        lerror(ArgError, "io.tostring!: requires memory stream");
+        lerrorf(ArgError, "io.tostring!: requires memory stream");
     return stream_to_string(&args[0]);
 }
 
--- a/print.c
+++ b/print.c
@@ -207,7 +207,7 @@
     // get the width of an expression if we can do so cheaply
     if (issymbol(v))
         return u8_strwidth(symbol_name(v));
-    if (iscprim(v) && cp_class((cprim_t*)ptr(v)) == wchartype)
+    if (iscprim(v) && ptr(v) != NULL && cp_class((cprim_t*)ptr(v)) == wchartype)
         return 4;
     return -1;
 }
@@ -611,8 +611,6 @@
     // get rid of all those zeros.
 }
 
-static numerictype_t sym_to_numtype(value_t type);
-
 // 'weak' means we don't need to accurately reproduce the type, so
 // for example #int32(0) can be printed as just 0. this is used
 // printing in a context where a type is already implied, e.g. inside
@@ -708,15 +706,15 @@
         // handle other integer prims. we know it's smaller than uint64
         // at this point, so int64 is big enough to capture everything.
         numerictype_t nt = sym_to_numtype(type);
-        if (nt == N_NUMTYPES) {
-            HPOS += ios_printf(f, "#<%s>", symbol_name(type));
-        }
-        else {
+        if (valid_numtype(nt)) {
             int64_t i64 = conv_to_int64(data, nt);
             if (weak || print_princ)
                 HPOS += ios_printf(f, "%"PRId64, i64);
             else
                 HPOS += ios_printf(f, "#%s(%"PRId64")", symbol_name(type), i64);
+        }
+        else {
+            HPOS += ios_printf(f, "#<%s>", symbol_name(type));
         }
     }
     else if (iscons(type)) {
--- a/read.c
+++ b/read.c
@@ -182,7 +182,7 @@
 {
     buf[(*pi)++] = c;
     if (*pi >= (int)(sizeof(buf)-1))
-        lerror(ParseError, "read: token too long");
+        lerrorf(ParseError, "read: token too long");
 }
 
 // return: 1 if escaped (forced to be symbol)
@@ -258,7 +258,7 @@
     else if (c == '#') {
         ch = ios_getc(F); c = (char)ch;
         if (ch == IOS_EOF)
-            lerror(ParseError, "read: invalid read macro");
+            lerrorf(ParseError, "read: invalid read macro");
         if (c == '.') {
             toktype = TOK_SHARPDOT;
         }
@@ -268,13 +268,13 @@
         else if (c == '\\') {
             uint32_t cval;
             if (ios_getutf8(F, &cval) == IOS_EOF)
-                lerror(ParseError, "read: end of input in character constant");
+                lerrorf(ParseError, "read: end of input in character constant");
             if (cval == (uint32_t)'u' || cval == (uint32_t)'U' ||
                 cval == (uint32_t)'x') {
                 read_token('u', 0);
                 if (buf[1] != '\0') {  // not a solitary 'u','U','x'
                     if (!read_numtok(&buf[1], &tokval, 16))
-                        lerror(ParseError,
+                        lerrorf(ParseError,
                                "read: invalid hex character constant");
                     cval = numval(tokval);
                 }
@@ -305,7 +305,7 @@
             toktype = TOK_SHARPOPEN;
         }
         else if (c == '<') {
-            lerror(ParseError, "read: unreadable object");
+            lerrorf(ParseError, "read: unreadable object");
         }
         else if (isdigit(c)) {
             read_token(c, 1);
@@ -315,11 +315,11 @@
             else if (c == '=')
                 toktype = TOK_LABEL;
             else
-                lerror(ParseError, "read: invalid label");
+                lerrorf(ParseError, "read: invalid label");
             errno = 0;
             x = strtoll(buf, &end, 10);
             if (*end != '\0' || errno)
-                lerror(ParseError, "read: invalid label");
+                lerrorf(ParseError, "read: invalid label");
             tokval = fixnum(x);
         }
         else if (c == '!') {
@@ -336,7 +336,7 @@
                 ch = ios_getc(F);
             hashpipe_gotc:
                 if (ch == IOS_EOF)
-                    lerror(ParseError, "read: eof within comment");
+                    lerrorf(ParseError, "read: eof within comment");
                 if ((char)ch == '|') {
                     ch = ios_getc(F);
                     if ((char)ch == '#') {
@@ -373,7 +373,7 @@
             errno = 0;
             x = strtol(buf, &end, 10);
             if (*end != '\0' || buf[0] == '\0' || errno)
-                lerror(ParseError, "read: invalid gensym label");
+                lerrorf(ParseError, "read: invalid gensym label");
             toktype = TOK_GENSYM;
             tokval = fixnum(x);
         }
@@ -395,7 +395,7 @@
             tokval = symbol(buf);
         }
         else {
-            lerror(ParseError, "read: unknown read macro");
+            lerrorf(ParseError, "read: unknown read macro");
         }
     }
     else if (c == ',') {
@@ -460,7 +460,7 @@
         ptrhash_put(&readstate->backrefs, (void*)label, (void*)v);
     while (peek() != closer) {
         if (ios_eof(F))
-            lerror(ParseError, "read: unexpected end of input");
+            lerrorf(ParseError, "read: unexpected end of input");
         if (i >= vector_size(v)) {
             v = Stack[SP-1] = vector_grow(v);
             if (label != UNBOUND)
@@ -494,7 +494,7 @@
             temp = realloc(buf, sz);
             if (temp == NULL) {
                 free(buf);
-                lerror(ParseError, "read: out of memory reading string");
+                lerrorf(ParseError, "read: out of memory reading string");
             }
             buf = temp;
         }
@@ -501,7 +501,7 @@
         c = ios_getc(F);
         if (c == IOS_EOF) {
             free(buf);
-            lerror(ParseError, "read: unexpected end of input in string");
+            lerrorf(ParseError, "read: unexpected end of input in string");
         }
         if (c == '"')
             break;
@@ -509,7 +509,7 @@
             c = ios_getc(F);
             if (c == IOS_EOF) {
                 free(buf);
-                lerror(ParseError, "read: end of input in escape sequence");
+                lerrorf(ParseError, "read: end of input in escape sequence");
             }
             j=0;
             if (octal_digit(c)) {
@@ -536,7 +536,7 @@
                 if (j) wc = strtol(eseq, NULL, 16);
                 if (!j || wc > 0x10ffff) {
                     free(buf);
-                    lerror(ParseError, "read: invalid escape sequence");
+                    lerrorf(ParseError, "read: invalid escape sequence");
                 }
                 if (ndig == 2)
                     buf[i++] = ((char)wc);
@@ -570,7 +570,7 @@
     t = peek();
     while (t != closer) {
         if (ios_eof(F))
-            lerror(ParseError, "read: unexpected end of input");
+            lerrorf(ParseError, "read: unexpected end of input");
         c = mk_cons(); car_(c) = cdr_(c) = NIL;
         if (iscons(*pc)) {
             cdr_(*pc) = c;
@@ -591,7 +591,7 @@
             cdr_(*pc) = c;
             t = peek();
             if (ios_eof(F))
-                lerror(ParseError, "read: unexpected end of input");
+                lerrorf(ParseError, "read: unexpected end of input");
             if (t != closer) {
                 take();
                 lerrorf(ParseError, "read: expected '%c'", closer==TOK_CLOSEB ? ']' : ')');
@@ -615,11 +615,11 @@
     take();
     switch (t) {
     case TOK_CLOSE:
-        lerror(ParseError, "read: unexpected ')'");
+        lerrorf(ParseError, "read: unexpected ')'");
     case TOK_CLOSEB:
-        lerror(ParseError, "read: unexpected ']'");
+        lerrorf(ParseError, "read: unexpected ']'");
     case TOK_DOT:
-        lerror(ParseError, "read: unexpected '.'");
+        lerrorf(ParseError, "read: unexpected '.'");
     case TOK_SYM:
     case TOK_NUM:
         return tokval;
--- a/table.c
+++ b/table.c
@@ -79,7 +79,7 @@
 {
     size_t cnt = (size_t)nargs;
     if (cnt & 1)
-        lerror(ArgError, "table: arguments must come in pairs");
+        lerrorf(ArgError, "table: arguments must come in pairs");
     value_t nt;
     // prevent small tables from being added to finalizer list
     if (cnt <= HT_N_INLINE) {
@@ -176,7 +176,7 @@
             // reload pointer
             h = (htable_t*)cv_data((cvalue_t*)ptr(t));
             if (h->size != n)
-                lerror(EnumerationError, "table.foldl: table modified");
+                lerrorf(EnumerationError, "table.foldl: table modified");
             table = h->table;
         }
     }
--- a/types.c
+++ b/types.c
@@ -22,28 +22,22 @@
         sz = ctype_sizeof(t, &align);
     }
 
-    ft = (fltype_t*)malloc(sizeof(fltype_t));
+    ft = calloc(1, sizeof(fltype_t));
     ft->type = t;
+    ft->numtype = NONNUMERIC;
     if (issymbol(t)) {
         ft->numtype = sym_to_numtype(t);
+        assert(valid_numtype(ft->numtype));
         ((symbol_t*)ptr(t))->type = ft;
     }
-    else {
-        ft->numtype = N_NUMTYPES;
-    }
     ft->size = sz;
-    ft->vtable = NULL;
-    ft->artype = NULL;
     ft->marked = 1;
-    ft->elsz = 0;
-    ft->eltype = NULL;
-    ft->init = NULL;
     if (iscons(t)) {
         if (isarray) {
             fltype_t *eltype = get_type(car_(cdr_(t)));
             if (eltype->size == 0) {
                 free(ft);
-                lerror(ArgError, "invalid array element type");
+                lerrorf(ArgError, "invalid array element type");
             }
             ft->elsz = eltype->size;
             ft->eltype = eltype;
@@ -70,14 +64,11 @@
 fltype_t *define_opaque_type(value_t sym, size_t sz, cvtable_t *vtab,
                              cvinitfunc_t init)
 {
-    fltype_t *ft = (fltype_t*)malloc(sizeof(fltype_t));
+    fltype_t *ft = calloc(1, sizeof(fltype_t));
     ft->type = sym;
+    ft->numtype = NONNUMERIC;
     ft->size = sz;
-    ft->numtype = N_NUMTYPES;
     ft->vtable = vtab;
-    ft->artype = NULL;
-    ft->eltype = NULL;
-    ft->elsz = 0;
     ft->marked = 1;
     ft->init = init;
     return ft;