Replace #21158 with a better patch from Hugo

[perl5.git] / handy.h

diff --git a/handy.h b/handy.h
index be0454b..94798f4 100644 (file)
--- a/handy.h
+++ b/handy.h
@@ -1,6 +1,7 @@
 /*    handy.h
  *
- *    Copyright (c) 1991-2002, Larry Wall
+ *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
+ *    2000, 2001, 2002, by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -25,6 +26,7 @@
 
 =for apidoc AmU||Nullch 
 Null character pointer.
+
 =for apidoc AmU||Nullsv
 Null SV pointer.
 
@@ -174,7 +176,11 @@ typedef U64TYPE U64;
 
 #define I32_MAX INT32_MAX
 #define I32_MIN INT32_MIN
-#define U32_MAX UINT32_MAX
+#ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
+#  define U32_MAX UINT32_MAX
+#else
+#  define U32_MAX 4294967295U
+#endif
 #define U32_MIN UINT32_MIN
 
 #else
@@ -456,7 +462,10 @@ Converts the specified character to lowercase.
 #define isBLANK_LC_uni(c)      isBLANK(c) /* could be wrong */
 
 #define isALNUM_utf8(p)                is_utf8_alnum(p)
-#define isIDFIRST_utf8(p)      is_utf8_idfirst(p)
+/* The ID_Start of Unicode is quite limiting: it assumes a L-class
+ * character (meaning that you cannot have, say, a CJK character).
+ * Instead, let's allow ID_Continue but not digits. */
+#define isIDFIRST_utf8(p)      (is_utf8_idcont(p) && !is_utf8_digit(p))
 #define isALPHA_utf8(p)                is_utf8_alpha(p)
 #define isSPACE_utf8(p)                is_utf8_space(p)
 #define isDIGIT_utf8(p)                is_utf8_digit(p)
@@ -493,34 +502,26 @@ Converts the specified character to lowercase.
 #define isBLANK_LC_utf8(c)     isBLANK(c) /* could be wrong */
 
 #ifdef EBCDIC
-#  define toCTRL(c)    Perl_ebcdic_control(c)
+#  ifdef PERL_IMPLICIT_CONTEXT
+#    define toCTRL(c)     Perl_ebcdic_control(aTHX_ c)
+#  else
+#    define toCTRL        Perl_ebcdic_control
+#  endif
 #else
   /* This conversion works both ways, strangely enough. */
 #  define toCTRL(c)    (toUPPER(c) ^ 64)
 #endif
 
-/* Line numbers are unsigned, 16 bits. */
-typedef U16 line_t;
+/* Line numbers are unsigned, 32 bits. */
+typedef U32 line_t;
 #ifdef lint
 #define NOLINE ((line_t)0)
 #else
-#define NOLINE ((line_t) 65535)
+#define NOLINE ((line_t) 4294967295UL)
 #endif
 
 
 /*
-   XXX LEAKTEST doesn't really work in perl5.  There are direct calls to
-   safemalloc() in the source, so LEAKTEST won't pick them up.
-   (The main "offenders" are extensions.)
-   Further, if you try LEAKTEST, you'll also end up calling
-   Safefree, which might call safexfree() on some things that weren't
-   malloced with safexmalloc.  The correct "fix" to this, if anyone
-   is interested, is to ensure that all calls go through the New and
-   Renew macros.
-       --Andy Dougherty                August 1996
-*/
-
-/*
 =head1 SV Manipulation Functions
 
 =for apidoc Am|SV*|NEWSV|int id|STRLEN len
@@ -571,15 +572,17 @@ destination, C<nitems> is the number of items, and C<type> is the type.
 =for apidoc Am|void|StructCopy|type src|type dest|type
 This is an architecture-independent macro to copy one structure to another.
 
-=cut
-*/
+=for apidoc Am|void|Poison|void* dest|int nitems|type
+
+Fill up memory with a pattern (byte 0xAB over and over again) that
+hopefully catches attempts to access uninitialized memory.
+
+=cut */
 
 #ifndef lint
 
 #define NEWSV(x,len)   newSV(len)
 
-#ifndef LEAKTEST
-
 #define New(x,v,n,t)   (v = (t*)safemalloc((MEM_SIZE)((n)*sizeof(t))))
 #define Newc(x,v,n,t,c)        (v = (c*)safemalloc((MEM_SIZE)((n)*sizeof(t))))
 #define Newz(x,v,n,t)  (v = (t*)safemalloc((MEM_SIZE)((n)*sizeof(t)))), \
@@ -590,32 +593,12 @@ This is an architecture-independent macro to copy one structure to another.
          (v = (c*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
 #define Safefree(d)    safefree((Malloc_t)(d))
 
-#else /* LEAKTEST */
-
-#define New(x,v,n,t)   (v = (t*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t))))
-#define Newc(x,v,n,t,c)        (v = (c*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t))))
-#define Newz(x,v,n,t)  (v = (t*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t)))), \
-                        memzero((char*)(v), (n)*sizeof(t))
-#define Renew(v,n,t) \
-         (v = (t*)safexrealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
-#define Renewc(v,n,t,c) \
-         (v = (c*)safexrealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
-#define Safefree(d)    safexfree((Malloc_t)(d))
-
-#define MAXXCOUNT 1400
-#define MAXY_SIZE 80
-#define MAXYCOUNT 16                   /* (MAXY_SIZE/4 + 1) */
-extern long xcount[MAXXCOUNT];
-extern long lastxcount[MAXXCOUNT];
-extern long xycount[MAXXCOUNT][MAXYCOUNT];
-extern long lastxycount[MAXXCOUNT][MAXYCOUNT];
-
-#endif /* LEAKTEST */
-
 #define Move(s,d,n,t)  (void)memmove((char*)(d),(char*)(s), (n) * sizeof(t))
 #define Copy(s,d,n,t)  (void)memcpy((char*)(d),(char*)(s), (n) * sizeof(t))
 #define Zero(d,n,t)    (void)memzero((char*)(d), (n) * sizeof(t))
 
+#define Poison(d,n,t)  (void)memset((char*)(d), 0xAB, (n) * sizeof(t))
+
 #else /* lint */
 
 #define New(x,v,n,s)   (v = Null(s *))
@@ -625,6 +608,7 @@ extern long lastxycount[MAXXCOUNT][MAXYCOUNT];
 #define Move(s,d,n,t)
 #define Copy(s,d,n,t)
 #define Zero(d,n,t)
+#define Poison(d,n,t)
 #define Safefree(d)    (d) = (d)
 
 #endif /* lint */
@@ -635,6 +619,8 @@ extern long lastxycount[MAXXCOUNT][MAXYCOUNT];
 #define StructCopy(s,d,t) Copy(s,d,1,t)
 #endif
 
+#define C_ARRAY_LENGTH(a)      (sizeof(a)/sizeof((a)[0]))
+
 #ifdef NEED_VA_COPY
 # ifdef va_copy
 #  define Perl_va_copy(s, d) va_copy(d, s)