# include "regcomp.h"
#endif
-#include "dquote_inline.h"
#include "invlist_inline.h"
#include "unicode_constants.h"
} STMT_END
/* m is not necessarily a "literal string", in this macro */
-#define reg_warn_non_literal_string(loc, m) \
- _WARN_HELPER(loc, packWARN(WARN_REGEXP), \
- Perl_warner(aTHX_ packWARN(WARN_REGEXP), \
+#define warn_non_literal_string(loc, packed_warn, m) \
+ _WARN_HELPER(loc, packed_warn, \
+ Perl_warner(aTHX_ packed_warn, \
"%s" REPORT_LOCATION, \
m, REPORT_LOCATION_ARGS(loc)))
+#define reg_warn_non_literal_string(loc, m) \
+ warn_non_literal_string(loc, packWARN(WARN_REGEXP), m)
#define ckWARN2_non_literal_string(loc, packwarn, m, a1) \
STMT_START { \
/* END of edit_distance() stuff
* ========================================================= */
-/* is c a control character for which we have a mnemonic? */
-#define isMNEMONIC_CNTRL(c) _IS_MNEMONIC_CNTRL_ONLY_FOR_USE_BY_REGCOMP_DOT_C(c)
-
-STATIC const char *
-S_cntrl_to_mnemonic(const U8 c)
-{
- /* Returns the mnemonic string that represents character 'c', if one
- * exists; NULL otherwise. The only ones that exist for the purposes of
- * this routine are a few control characters */
-
- switch (c) {
- case '\a': return "\\a";
- case '\b': return "\\b";
- case ESC_NATIVE: return "\\e";
- case '\f': return "\\f";
- case '\n': return "\\n";
- case '\r': return "\\r";
- case '\t': return "\\t";
- }
-
- return NULL;
-}
-
/* Mark that we cannot extend a found fixed substring at this point.
Update the longest found anchored substring or the longest found
floating substrings if needed. */
str=STRING(convert);
setSTR_LEN(convert, 0);
}
- setSTR_LEN(convert, STR_LEN(convert) + len);
+ assert( ( STR_LEN(convert) + len ) < 256 );
+ setSTR_LEN(convert, (U8)(STR_LEN(convert) + len));
while (len--)
*str++ = *ch++;
} else {
trie->prefixlen = (state-1);
if (str) {
regnode *n = convert+NODE_SZ_STR(convert);
- NEXT_OFF(convert) = NODE_SZ_STR(convert);
+ assert( NODE_SZ_STR(convert) <= U16_MAX );
+ NEXT_OFF(convert) = (U16)(NODE_SZ_STR(convert));
trie->startstate = state;
trie->minlen -= (state - 1);
trie->maxlen -= (state - 1);
merged++;
NEXT_OFF(scan) += NEXT_OFF(n);
- setSTR_LEN(scan, STR_LEN(scan) + STR_LEN(n));
+ assert( ( STR_LEN(scan) + STR_LEN(n) ) < 256 );
+ setSTR_LEN(scan, (U8)(STR_LEN(scan) + STR_LEN(n)));
next = n + NODE_SZ_STR(n);
/* Now we can overwrite *n : */
Move(STRING(n), STRING(scan) + oldl, STR_LEN(n), char);
}
break;
}
- DEBUG_PARSE_r(
+ DEBUG_PARSE_r({
DEBUG_PARSE_MSG("lsbr");
regprop(RExC_rx, RExC_mysv1, REGNODE_p(lastbr), NULL, pRExC_state);
regprop(RExC_rx, RExC_mysv2, REGNODE_p(ender), NULL, pRExC_state);
(IV)ender,
(IV)(ender - lastbr)
);
- );
+ });
if (! REGTAIL(pRExC_state, lastbr, ender)) {
REQUIRE_BRANCHJ(flagp, 0);
}
br= PL_regkind[OP(ret_as_regnode)] != BRANCH
? regnext(ret_as_regnode)
: ret_as_regnode;
- DEBUG_PARSE_r(
+ DEBUG_PARSE_r({
DEBUG_PARSE_MSG("NADA");
regprop(RExC_rx, RExC_mysv1, ret_as_regnode,
NULL, pRExC_state);
(IV)ender,
(IV)(ender - ret)
);
- );
+ });
OP(br)= NOTHING;
if (OP(REGNODE_p(ender)) == TAIL) {
NEXT_OFF(br)= 0;
}
nest_check:
if (!(flags&(HASWIDTH|POSTPONED)) && max > REG_INFTY/3) {
- ckWARN2reg(RExC_parse,
- "%" UTF8f " matches null string many times",
- UTF8fARG(UTF, (RExC_parse >= origparse
- ? RExC_parse - origparse
- : 0),
- origparse));
+ if (origparse[0] == '\\' && origparse[1] == 'K') {
+ vFAIL2utf8f(
+ "%" UTF8f " is forbidden - matches null string many times",
+ UTF8fARG(UTF, (RExC_parse >= origparse
+ ? RExC_parse - origparse
+ : 0),
+ origparse));
+ /* NOT-REACHED */
+ } else {
+ ckWARN2reg(RExC_parse,
+ "%" UTF8f " matches null string many times",
+ UTF8fARG(UTF, (RExC_parse >= origparse
+ ? RExC_parse - origparse
+ : 0),
+ origparse));
+ }
}
if (*RExC_parse == '?') {
* thing. */
do { /* Loop until the ending brace */
- UV cp = 0;
- char * start_digit; /* The first of the current code point */
- if (! isXDIGIT(*RExC_parse)) {
+ I32 flags = PERL_SCAN_SILENT_OVERFLOW
+ | PERL_SCAN_SILENT_ILLDIGIT
+ | PERL_SCAN_NOTIFY_ILLDIGIT
+ | PERL_SCAN_ALLOW_MEDIAL_UNDERSCORES
+ | PERL_SCAN_DISALLOW_PREFIX;
+ STRLEN len = endbrace - RExC_parse;
+ NV overflow_value;
+ char * start_digit = RExC_parse;
+ UV cp = grok_hex(RExC_parse, &len, &flags, &overflow_value);
+
+ if (len == 0) {
RExC_parse++;
+ bad_NU:
vFAIL("Invalid hexadecimal number in \\N{U+...}");
}
- start_digit = RExC_parse;
- count++;
-
- /* Loop through the hex digits of the current code point */
- do {
- /* Adding this digit will shift the result 4 bits. If that
- * result would be above the legal max, it's overflow */
- if (cp > MAX_LEGAL_CP >> 4) {
-
- /* Find the end of the code point */
- do {
- RExC_parse ++;
- } while (isXDIGIT(*RExC_parse) || *RExC_parse == '_');
-
- /* Be sure to synchronize this message with the similar one
- * in utf8.c */
- vFAIL4("Use of code point 0x%.*s is not allowed; the"
- " permissible max is 0x%" UVxf,
- (int) (RExC_parse - start_digit), start_digit,
- MAX_LEGAL_CP);
- }
-
- /* Accumulate this (valid) digit into the running total */
- cp = (cp << 4) + READ_XDIGIT(RExC_parse);
+ RExC_parse += len;
- /* READ_XDIGIT advanced the input pointer. Ignore a single
- * underscore separator */
- if (*RExC_parse == '_' && isXDIGIT(RExC_parse[1])) {
- RExC_parse++;
- }
- } while (isXDIGIT(*RExC_parse));
+ if (cp > MAX_LEGAL_CP) {
+ vFAIL(form_cp_too_large_msg(16, start_digit, len, 0));
+ }
- /* Here, have accumulated the next code point */
- if (RExC_parse >= endbrace) { /* If done ... */
- if (count != 1) {
+ if (RExC_parse >= endbrace) { /* Got to the closing '}' */
+ if (count) {
goto do_concat;
}
return TRUE;
}
- /* Here, the only legal thing would be a multiple character
- * sequence (of the form "\N{U+c1.c2. ... }". So the next
- * character must be a dot (and the one after that can't be the
- * endbrace, or we'd have something like \N{U+100.} ) */
+ /* Here, the parse stopped bfore the ending brace. This is legal
+ * only if that character is a dot separating code points, like a
+ * multiple character sequence (of the form "\N{U+c1.c2. ... }".
+ * So the next character must be a dot (and the one after that
+ * can't be the endbrace, or we'd have something like \N{U+100.} )
+ * */
if (*RExC_parse != '.' || RExC_parse + 1 >= endbrace) {
RExC_parse += (RExC_orig_utf8) /* point to after 1st invalid */
- ? UTF8SKIP(RExC_parse)
- : 1;
- if (RExC_parse >= endbrace) { /* Guard against malformed utf8 */
- RExC_parse = endbrace;
- }
- vFAIL("Invalid hexadecimal number in \\N{U+...}");
+ ? UTF8SKIP(RExC_parse)
+ : 1;
+ RExC_parse = MIN(endbrace, RExC_parse);/* Guard against
+ malformed utf8 */
+ goto bad_NU;
}
/* Here, looks like its really a multiple character sequence. Fail
* but go through the motions of code point counting and error
* checking, if the caller doesn't want a node returned. */
- if (node_p && count == 1) {
+ if (node_p && ! substitute_parse) {
substitute_parse = newSVpvs("?:");
}
|| ! is_PATWS_safe((p), RExC_end, UTF));
switch ((U8)*p) {
+ const char* message;
+ U32 packed_warn;
+ U8 grok_c_char;
+
case '^':
case '$':
case '.':
p++;
break;
case 'o':
- {
- UV result;
- const char* error_msg;
-
- bool valid = grok_bslash_o(&p,
- RExC_end,
- &result,
- &error_msg,
- TO_OUTPUT_WARNINGS(p),
- (bool) RExC_strict,
- UTF);
- if (! valid) {
- RExC_parse = p; /* going to die anyway; point
- to exact spot of failure */
- vFAIL(error_msg);
- }
- UPDATE_WARNINGS_LOC(p - 1);
- ender = result;
- break;
- }
+ if (! grok_bslash_o(&p,
+ RExC_end,
+ &ender,
+ &message,
+ &packed_warn,
+ (bool) RExC_strict,
+ FALSE, /* No illegal cp's */
+ UTF))
+ {
+ RExC_parse = p; /* going to die anyway; point to
+ exact spot of failure */
+ vFAIL(message);
+ }
+
+ if (message && TO_OUTPUT_WARNINGS(p)) {
+ warn_non_literal_string(p, packed_warn, message);
+ }
+ break;
case 'x':
- {
- UV result = UV_MAX; /* initialize to erroneous
- value */
- const char* error_msg;
-
- bool valid = grok_bslash_x(&p,
- RExC_end,
- &result,
- &error_msg,
- TO_OUTPUT_WARNINGS(p),
- (bool) RExC_strict,
- UTF);
- if (! valid) {
- RExC_parse = p; /* going to die anyway; point
- to exact spot of failure */
- vFAIL(error_msg);
- }
- UPDATE_WARNINGS_LOC(p - 1);
- ender = result;
+ if (! grok_bslash_x(&p,
+ RExC_end,
+ &ender,
+ &message,
+ &packed_warn,
+ (bool) RExC_strict,
+ FALSE, /* No illegal cp's */
+ UTF))
+ {
+ RExC_parse = p; /* going to die anyway; point
+ to exact spot of failure */
+ vFAIL(message);
+ }
+
+ if (message && TO_OUTPUT_WARNINGS(p)) {
+ warn_non_literal_string(p, packed_warn, message);
+ }
#ifdef EBCDIC
- if (ender < 0x100) {
- if (RExC_recode_x_to_native) {
- ender = LATIN1_TO_NATIVE(ender);
- }
- }
+ if (ender < 0x100) {
+ if (RExC_recode_x_to_native) {
+ ender = LATIN1_TO_NATIVE(ender);
+ }
+ }
#endif
- break;
- }
+ break;
case 'c':
- p++;
- ender = grok_bslash_c(*p, TO_OUTPUT_WARNINGS(p));
- UPDATE_WARNINGS_LOC(p);
p++;
+ if (! grok_bslash_c(*p, &grok_c_char,
+ &message, &packed_warn))
+ {
+ /* going to die anyway; point to exact spot of
+ * failure */
+ RExC_parse = p + ((UTF)
+ ? UTF8_SAFE_SKIP(p, RExC_end)
+ : 1);
+ vFAIL(message);
+ }
+
+ ender = grok_c_char;
+ p++;
+ if (message && TO_OUTPUT_WARNINGS(p)) {
+ warn_non_literal_string(p, packed_warn, message);
+ }
+
break;
case '8': case '9': /* must be a backreference */
--p;
/* FALLTHROUGH */
case '0':
{
- I32 flags = PERL_SCAN_SILENT_ILLDIGIT;
+ I32 flags = PERL_SCAN_SILENT_ILLDIGIT
+ | PERL_SCAN_NOTIFY_ILLDIGIT;
STRLEN numlen = 3;
ender = grok_oct(p, &numlen, &flags, NULL);
p += numlen;
- if ( isDIGIT(*p) /* like \08, \178 */
- && ckWARN(WARN_REGEXP)
- && numlen < 3)
+ if ( (flags & PERL_SCAN_NOTIFY_ILLDIGIT)
+ && isDIGIT(*p) /* like \08, \178 */
+ && ckWARN(WARN_REGEXP))
{
reg_warn_non_literal_string(
- p + 1,
- form_short_octal_warning(p, numlen));
+ p + 1,
+ form_alien_digit_msg(8, numlen, p,
+ RExC_end, UTF, FALSE));
}
}
break;
else if (FOLD) {
bool splittable = FALSE;
bool backed_up = FALSE;
- char * e;
- char * s_start;
+ char * e; /* should this be U8? */
+ char * s_start; /* should this be U8? */
/* Here is /i. Running out of room creates a problem if we are
* folding, and the split happens in the middle of a
if ( ender != LATIN_SMALL_LETTER_SHARP_S
|| ASCII_FOLD_RESTRICTED)
{
- *e++ = toLOWER_L1(ender);
+ assert( toLOWER_L1(ender) < 256 );
+ *e++ = (char)(toLOWER_L1(ender)); /* should e and the cast be U8? */
}
else {
*e++ = 's';
if ( UCHARAT(p) != LATIN_SMALL_LETTER_SHARP_S
|| ASCII_FOLD_RESTRICTED)
{
- *e++ = toLOWER_L1(ender);
+ assert( toLOWER_L1(ender) < 256 );
+ *e++ = (char)(toLOWER_L1(ender)); /* should e and the cast be U8? */
}
else {
*e++ = 's';
PERL_ARGS_ASSERT_OUTPUT_POSIX_WARNINGS;
if (! TO_OUTPUT_WARNINGS(RExC_parse)) {
+ CLEAR_POSIX_WARNINGS();
return;
}
* is already in 'value'. Otherwise, need to translate the escape
* into what it signifies. */
if (! skip_white || ! isBLANK_A(value)) switch ((I32)value) {
+ const char * message;
+ U32 packed_warn;
+ U8 grok_c_char;
case 'w': namedclass = ANYOF_WORDCHAR; break;
case 'W': namedclass = ANYOF_NWORDCHAR; break;
case 'a': value = '\a'; break;
case 'o':
RExC_parse--; /* function expects to be pointed at the 'o' */
- {
- const char* error_msg;
- bool valid = grok_bslash_o(&RExC_parse,
- RExC_end,
- &value,
- &error_msg,
- TO_OUTPUT_WARNINGS(RExC_parse),
- strict,
- UTF);
- if (! valid) {
- vFAIL(error_msg);
- }
- UPDATE_WARNINGS_LOC(RExC_parse - 1);
- }
- non_portable_endpoint++;
+ if (! grok_bslash_o(&RExC_parse,
+ RExC_end,
+ &value,
+ &message,
+ &packed_warn,
+ strict,
+ cBOOL(range), /* MAX_UV allowed for range
+ upper limit */
+ UTF))
+ {
+ vFAIL(message);
+ }
+ else if (message && TO_OUTPUT_WARNINGS(RExC_parse)) {
+ warn_non_literal_string(RExC_parse, packed_warn, message);
+ }
+
+ if (value < 256) {
+ non_portable_endpoint++;
+ }
break;
case 'x':
RExC_parse--; /* function expects to be pointed at the 'x' */
- {
- const char* error_msg;
- bool valid = grok_bslash_x(&RExC_parse,
- RExC_end,
- &value,
- &error_msg,
- TO_OUTPUT_WARNINGS(RExC_parse),
- strict,
- UTF);
- if (! valid) {
- vFAIL(error_msg);
- }
- UPDATE_WARNINGS_LOC(RExC_parse - 1);
- }
- non_portable_endpoint++;
+ if (! grok_bslash_x(&RExC_parse,
+ RExC_end,
+ &value,
+ &message,
+ &packed_warn,
+ strict,
+ cBOOL(range), /* MAX_UV allowed for range
+ upper limit */
+ UTF))
+ {
+ vFAIL(message);
+ }
+ else if (message && TO_OUTPUT_WARNINGS(RExC_parse)) {
+ warn_non_literal_string(RExC_parse, packed_warn, message);
+ }
+
+ if (value < 256) {
+ non_portable_endpoint++;
+ }
break;
case 'c':
- value = grok_bslash_c(*RExC_parse, TO_OUTPUT_WARNINGS(RExC_parse));
- UPDATE_WARNINGS_LOC(RExC_parse);
- RExC_parse++;
+ if (! grok_bslash_c(*RExC_parse, &grok_c_char, &message,
+ &packed_warn))
+ {
+ /* going to die anyway; point to exact spot of
+ * failure */
+ RExC_parse += (UTF)
+ ? UTF8_SAFE_SKIP(RExC_parse, RExC_end)
+ : 1;
+ vFAIL(message);
+ }
+
+ value = grok_c_char;
+ RExC_parse++;
+ if (message && TO_OUTPUT_WARNINGS(RExC_parse)) {
+ warn_non_literal_string(RExC_parse, packed_warn, message);
+ }
+
non_portable_endpoint++;
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7':
{
/* Take 1-3 octal digits */
- I32 flags = PERL_SCAN_SILENT_ILLDIGIT;
+ I32 flags = PERL_SCAN_SILENT_ILLDIGIT
+ | PERL_SCAN_NOTIFY_ILLDIGIT;
numlen = (strict) ? 4 : 3;
value = grok_oct(--RExC_parse, &numlen, &flags, NULL);
RExC_parse += numlen;
: 1;
vFAIL("Need exactly 3 octal digits");
}
- else if ( numlen < 3 /* like \08, \178 */
+ else if ( (flags & PERL_SCAN_NOTIFY_ILLDIGIT)
&& RExC_parse < RExC_end
&& isDIGIT(*RExC_parse)
&& ckWARN(WARN_REGEXP))
{
reg_warn_non_literal_string(
RExC_parse + 1,
- form_short_octal_warning(RExC_parse, numlen));
+ form_alien_digit_msg(8, numlen, RExC_parse,
+ RExC_end, UTF, FALSE));
}
}
- non_portable_endpoint++;
+ if (value < 256) {
+ non_portable_endpoint++;
+ }
break;
}
default:
/* non-Latin1 code point implies unicode semantics. */
if (value > 255) {
+ if (value > MAX_LEGAL_CP && ( value != UV_MAX
+ || prevvalue > MAX_LEGAL_CP))
+ {
+ vFAIL(form_cp_too_large_msg(16, NULL, 0, value));
+ }
REQUIRE_UNI_RULES(flagp, 0);
if ( ! silence_non_portable
&& UNICODE_IS_PERL_EXTENDED(value)
/* The data consists of just strings defining user-defined
* property names, but in prior incarnations, and perhaps
* somehow from pluggable regex engines, it could still
- * hold hex code point definitions. Each component of a
- * range would be separated by a tab, and each range by a
- * new-line. If these are found, instead add them to the
- * inversion list */
+ * hold hex code point definitions, all of which should be
+ * legal (or it wouldn't have gotten this far). Each
+ * component of a range would be separated by a tab, and
+ * each range by a new-line. If these are found, instead
+ * add them to the inversion list */
I32 grok_flags = PERL_SCAN_SILENT_ILLDIGIT
|PERL_SCAN_SILENT_NON_PORTABLE;
STRLEN len = remaining;
dVAR;
char* lookup_name; /* normalized name for lookup in our tables */
unsigned lookup_len; /* Its length */
- bool stricter = FALSE; /* Some properties have stricter name
- normalization rules, which we decide upon
- based on parsing */
+ enum { Not_Strict = 0, /* Some properties have stricter name */
+ Strict, /* normalization rules, which we decide */
+ As_Is /* upon based on parsing */
+ } stricter = Not_Strict;
/* nv= or numeric_value=, or possibly one of the cjk numeric properties
* (though it requires extra effort to download them from Unicode and
* or are positioned just after the '=' if it is compound. */
if (equals_pos >= 0) {
- assert(! stricter); /* We shouldn't have set this yet */
+ assert(stricter == Not_Strict); /* We shouldn't have set this yet */
/* Space immediately after the '=' is ignored */
i++;
* some constructs in their subpattern, like \A. */
} /* End of is a wildcard subppattern */
+ /* \p{name=...} is handled specially. Instead of using the normal
+ * mechanism involving charclass_invlists.h, it uses _charnames.pm
+ * which has the necessary (huge) data accessible to it, and which
+ * doesn't get loaded unless necessary. The legal syntax for names is
+ * somewhat different than other properties due both to the vagaries of
+ * a few outlier official names, and the fact that only a few ASCII
+ * characters are permitted in them */
+ if ( memEQs(lookup_name, j - 1, "name")
+ || memEQs(lookup_name, j - 1, "na"))
+ {
+ dSP;
+ HV * table;
+ SV * character;
+ const char * error_msg;
+ CV* lookup_loose;
+ SV * character_name;
+ STRLEN character_len;
+ UV cp;
+
+ stricter = As_Is;
+
+ /* Since the RHS (after skipping initial space) is passed unchanged
+ * to charnames, and there are different criteria for what are
+ * legal characters in the name, just parse it here. A character
+ * name must begin with an ASCII alphabetic */
+ if (! isALPHA(name[i])) {
+ goto failed;
+ }
+ lookup_name[j++] = name[i];
+
+ for (++i; i < name_len; i++) {
+ /* Official names can only be in the ASCII range, and only
+ * certain characters */
+ if (! isASCII(name[i]) || ! isCHARNAME_CONT(name[i])) {
+ goto failed;
+ }
+ lookup_name[j++] = name[i];
+ }
+
+ /* Finished parsing, save the name into an SV */
+ character_name = newSVpvn(lookup_name + equals_pos, j - equals_pos);
+
+ /* Make sure _charnames is loaded. (The parameters give context
+ * for any errors generated */
+ table = load_charnames(character_name, name, name_len, &error_msg);
+ if (table == NULL) {
+ sv_catpv(msg, error_msg);
+ goto append_name_to_msg;
+ }
+
+ lookup_loose = get_cv("_charnames::_loose_regcomp_lookup", 0);
+ if (! lookup_loose) {
+ Perl_croak(aTHX_
+ "panic: Can't find '_charnames::_loose_regcomp_lookup");
+ }
+
+ PUSHSTACKi(PERLSI_OVERLOAD);
+ ENTER ;
+ SAVETMPS;
+
+ PUSHMARK(SP) ;
+ XPUSHs(character_name);
+ PUTBACK;
+ call_sv(MUTABLE_SV(lookup_loose), G_SCALAR);
+
+ SPAGAIN ;
+
+ character = POPs;
+ SvREFCNT_inc_simple_void_NN(character);
+
+ PUTBACK ;
+ FREETMPS ;
+ LEAVE ;
+ POPSTACK;
+
+ if (! SvOK(character)) {
+ goto failed;
+ }
+
+ cp = valid_utf8_to_uvchr((U8 *) SvPVX(character), &character_len);
+ if (character_len < SvCUR(character)) {
+ goto failed;
+ }
+
+ prop_definition = add_cp_to_invlist(NULL, cp);
+ return prop_definition;
+ }
/* Certain properties whose values are numeric need special handling.
* They may optionally be prefixed by 'is'. Ignore that prefix for the
* But the numeric type properties can have the alphas [Ee] to
* signify an exponent, and it is still a number with stricter
* rules. So look for an alpha that signifies not-strict */
- stricter = TRUE;
+ stricter = Strict;
for (k = i; k < name_len; k++) {
if ( isALPHA_A(name[k])
&& (! is_nv_type || ! isALPHA_FOLD_EQ(name[k], 'E')))
{
- stricter = FALSE;
+ stricter = Not_Strict;
break;
}
}
&& memNEs(lookup_name + 4, j - 4, "space")
&& memNEs(lookup_name + 4, j - 4, "word"))
{
- stricter = TRUE;
+ stricter = Strict;
/* We set the inputs back to 0 and the code below will reparse,
* using strict */
* but not yet used. */
save_item(PL_subname);
+ /* G_SCALAR guarantees a single return value */
(void) call_sv(user_sub_sv, G_EVAL|G_SCALAR);
SPAGAIN;
(void) POPs;
prop_definition = NULL;
}
- else { /* G_SCALAR guarantees a single return value */
+ else {
SV * contents = POPs;
/* The contents is supposed to be the expansion of the property
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