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Change callouts to pass the user data as a separate argument.

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This commit is contained in:
ph10 2014-11-25 17:35:01 +00:00
parent 292c9799e1
commit 5f9ad579dc
9 changed files with 39 additions and 45 deletions
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4
doc/pcre2api.3
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@ -114,7 +114,7 @@ document for an overview of all the PCRE2 documentation.
.B void pcre2_match_context_free(pcre2_match_context *\fImcontext\fP); .B void pcre2_match_context_free(pcre2_match_context *\fImcontext\fP);
.sp .sp
.B int pcre2_set_callout(pcre2_match_context *\fImcontext\fP, .B int pcre2_set_callout(pcre2_match_context *\fImcontext\fP,
.B " int (*\fIcallout_function\fP)(pcre2_callout_block *)," .B " int (*\fIcallout_function\fP)(pcre2_callout_block *, void *),"
.B " void *\fIcallout_data\fP);" .B " void *\fIcallout_data\fP);"
.sp .sp
.B int pcre2_set_match_limit(pcre2_match_context *\fImcontext\fP, .B int pcre2_set_match_limit(pcre2_match_context *\fImcontext\fP,
@ -645,7 +645,7 @@ PCRE2_ERROR_BADDATA if invalid data is detected.
.sp .sp
.nf .nf
.B int pcre2_set_callout(pcre2_match_context *\fImcontext\fP, .B int pcre2_set_callout(pcre2_match_context *\fImcontext\fP,
.B " int (*\fIcallout_function\fP)(pcre2_callout_block *)," .B " int (*\fIcallout_function\fP)(pcre2_callout_block *, void *),"
.B " void *\fIcallout_data\fP);" .B " void *\fIcallout_data\fP);"
.fi .fi
.sp .sp

26
doc/pcre2callout.3
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@ -1,4 +1,4 @@
.TH PCRE2CALLOUT 3 "23 November 2014" "PCRE2 10.00" .TH PCRE2CALLOUT 3 "25 November 2014" "PCRE2 10.00"
.SH NAME .SH NAME
PCRE2 - Perl-compatible regular expressions (revised API) PCRE2 - Perl-compatible regular expressions (revised API)
.SH SYNOPSIS .SH SYNOPSIS
@ -7,7 +7,7 @@ PCRE2 - Perl-compatible regular expressions (revised API)
.B #include <pcre2.h> .B #include <pcre2.h>
.PP .PP
.SM .SM
.B int (*pcre2_callout)(pcre2_callout_block *); .B int (*pcre2_callout)(pcre2_callout_block *, void *);
. .
.SH DESCRIPTION .SH DESCRIPTION
.rs .rs
@ -119,14 +119,19 @@ callouts such as the example above are obeyed.
.sp .sp
During matching, when PCRE2 reaches a callout point, if an external function is During matching, when PCRE2 reaches a callout point, if an external function is
set in the match context, it is called. This applies to both normal and DFA set in the match context, it is called. This applies to both normal and DFA
matching. The only argument to the callout function is a pointer to a matching. The first argument to the callout function is a pointer to a
\fBpcre2_callout\fP block. This structure contains the following fields: \fBpcre2_callout\fP block. The second argument is the void * callout data that
was supplied when the callout was set up by calling \fBpcre2_set_callout()\fP
(see the
.\" HREF
\fBpcre2api\fP
.\"
documentation). The callout block structure contains the following fields:
.sp .sp
uint32_t \fIversion\fP; uint32_t \fIversion\fP;
uint32_t \fIcallout_number\fP; uint32_t \fIcallout_number\fP;
uint32_t \fIcapture_top\fP; uint32_t \fIcapture_top\fP;
uint32_t \fIcapture_last\fP; uint32_t \fIcapture_last\fP;
void *\fIcallout_data\fP;
PCRE2_SIZE *\fIoffset_vector\fP; PCRE2_SIZE *\fIoffset_vector\fP;
PCRE2_SPTR \fImark\fP; PCRE2_SPTR \fImark\fP;
PCRE2_SPTR \fIsubject\fP; PCRE2_SPTR \fIsubject\fP;
@ -177,15 +182,6 @@ outside the recursion, as do the values of all captured substrings. If no
substrings have been captured, the value of \fIcapture_last\fP is 0. This is substrings have been captured, the value of \fIcapture_last\fP is 0. This is
always the case for the DFA matching functions. always the case for the DFA matching functions.
.P .P
The \fIcallout_data\fP field contains a value that is passed to a matching
function specifically so that it can be passed back in callouts. It is set in
the match context when the callout is set up by calling
\fBpcre2_set_callout()\fP (see the
.\" HREF
\fBpcre2api\fP
.\"
documentation).
.P
The \fIpattern_position\fP field contains the offset to the next item to be The \fIpattern_position\fP field contains the offset to the next item to be
matched in the pattern string. matched in the pattern string.
.P .P
@ -236,6 +232,6 @@ Cambridge, England.
.rs .rs
.sp .sp
.nf .nf
Last updated: 23 November 2014 Last updated: 25 November 2014
Copyright (c) 1997-2014 University of Cambridge. Copyright (c) 1997-2014 University of Cambridge.
.fi .fi

3
src/pcre2.h.in
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@ -324,7 +324,6 @@ typedef struct pcre2_callout_block { \
uint32_t callout_number; /* Number compiled into pattern */ \ uint32_t callout_number; /* Number compiled into pattern */ \
uint32_t capture_top; /* Max current capture */ \ uint32_t capture_top; /* Max current capture */ \
uint32_t capture_last; /* Most recently closed capture */ \ uint32_t capture_last; /* Most recently closed capture */ \
void *callout_data; /* Data passed in with the call */ \
PCRE2_SIZE *offset_vector; /* The offset vector */ \ PCRE2_SIZE *offset_vector; /* The offset vector */ \
PCRE2_SPTR mark; /* Pointer to current mark or NULL */ \ PCRE2_SPTR mark; /* Pointer to current mark or NULL */ \
PCRE2_SPTR subject; /* The subject being matched */ \ PCRE2_SPTR subject; /* The subject being matched */ \
@ -378,7 +377,7 @@ PCRE2_EXP_DECL \
pcre2_match_context *pcre2_match_context_create(pcre2_general_context *); \ pcre2_match_context *pcre2_match_context_create(pcre2_general_context *); \
PCRE2_EXP_DECL void pcre2_match_context_free(pcre2_match_context *); \ PCRE2_EXP_DECL void pcre2_match_context_free(pcre2_match_context *); \
PCRE2_EXP_DECL int pcre2_set_callout(pcre2_match_context *, \ PCRE2_EXP_DECL int pcre2_set_callout(pcre2_match_context *, \
int (*)(pcre2_callout_block *), void *); \ int (*)(pcre2_callout_block *, void *), void *); \
PCRE2_EXP_DECL int pcre2_set_match_limit(pcre2_match_context *, \ PCRE2_EXP_DECL int pcre2_set_match_limit(pcre2_match_context *, \
uint32_t); \ uint32_t); \
PCRE2_EXP_DECL int pcre2_set_recursion_limit(pcre2_match_context *, \ PCRE2_EXP_DECL int pcre2_set_recursion_limit(pcre2_match_context *, \

2
src/pcre2_context.c
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@ -331,7 +331,7 @@ return 0;
PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION
pcre2_set_callout(pcre2_match_context *mcontext, pcre2_set_callout(pcre2_match_context *mcontext,
int (*callout)(pcre2_callout_block *), void *callout_data) int (*callout)(pcre2_callout_block *, void *), void *callout_data)
{ {
mcontext->callout = callout; mcontext->callout = callout;
mcontext->callout_data = callout_data; mcontext->callout_data = callout_data;

8
src/pcre2_dfa_match.c
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@ -2615,7 +2615,6 @@ for (;;)
cb.callout_number = code[LINK_SIZE+2]; cb.callout_number = code[LINK_SIZE+2];
cb.capture_top = 1; cb.capture_top = 1;
cb.capture_last = 0; cb.capture_last = 0;
cb.callout_data = mb->callout_data;
cb.offset_vector = offsets; cb.offset_vector = offsets;
cb.mark = NULL; /* No (*MARK) support */ cb.mark = NULL; /* No (*MARK) support */
cb.subject = start_subject; cb.subject = start_subject;
@ -2624,7 +2623,8 @@ for (;;)
cb.current_position = (PCRE2_SIZE)(ptr - start_subject); cb.current_position = (PCRE2_SIZE)(ptr - start_subject);
cb.pattern_position = GET(code, LINK_SIZE + 3); cb.pattern_position = GET(code, LINK_SIZE + 3);
cb.next_item_length = GET(code, 3 + 2*LINK_SIZE); cb.next_item_length = GET(code, 3 + 2*LINK_SIZE);
if ((rrc = (mb->callout)(&cb)) < 0) return rrc; /* Abandon */ if ((rrc = (mb->callout)(&cb, mb->callout_data)) < 0)
return rrc; /* Abandon */
} }
if (rrc > 0) break; /* Fail this thread */ if (rrc > 0) break; /* Fail this thread */
code += PRIV(OP_lengths)[OP_CALLOUT]; /* Skip callout data */ code += PRIV(OP_lengths)[OP_CALLOUT]; /* Skip callout data */
@ -2962,7 +2962,6 @@ for (;;)
cb.callout_number = code[1]; cb.callout_number = code[1];
cb.capture_top = 1; cb.capture_top = 1;
cb.capture_last = 0; cb.capture_last = 0;
cb.callout_data = mb->callout_data;
cb.offset_vector = offsets; cb.offset_vector = offsets;
cb.mark = NULL; /* No (*MARK) support */ cb.mark = NULL; /* No (*MARK) support */
cb.subject = start_subject; cb.subject = start_subject;
@ -2971,7 +2970,8 @@ for (;;)
cb.current_position = (PCRE2_SIZE)(ptr - start_subject); cb.current_position = (PCRE2_SIZE)(ptr - start_subject);
cb.pattern_position = GET(code, 2); cb.pattern_position = GET(code, 2);
cb.next_item_length = GET(code, 2 + LINK_SIZE); cb.next_item_length = GET(code, 2 + LINK_SIZE);
if ((rrc = (mb->callout)(&cb)) < 0) return rrc; /* Abandon */ if ((rrc = (mb->callout)(&cb, mb->callout_data)) < 0)
return rrc; /* Abandon */
} }
if (rrc == 0) if (rrc == 0)
{ ADD_ACTIVE(state_offset + PRIV(OP_lengths)[OP_CALLOUT], 0); } { ADD_ACTIVE(state_offset + PRIV(OP_lengths)[OP_CALLOUT], 0); }

6
src/pcre2_intmodedep.h
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@ -577,7 +577,7 @@ typedef struct pcre2_real_match_context {
pcre2_jit_callback jit_callback; pcre2_jit_callback jit_callback;
void *jit_callback_data; void *jit_callback_data;
#endif #endif
int (*callout)(pcre2_callout_block *); int (*callout)(pcre2_callout_block *, void *);
void *callout_data; void *callout_data;
uint32_t match_limit; uint32_t match_limit;
uint32_t recursion_limit; uint32_t recursion_limit;
@ -784,7 +784,7 @@ typedef struct match_block {
recursion_info *recursive; /* Linked list of recursion data */ recursion_info *recursive; /* Linked list of recursion data */
ovecsave_frame *ovecsave_chain; /* Linked list of free ovecsave blocks */ ovecsave_frame *ovecsave_chain; /* Linked list of free ovecsave blocks */
void *callout_data; /* To pass back to callouts */ void *callout_data; /* To pass back to callouts */
int (*callout)(pcre2_callout_block *); /* Callout function or NULL */ int (*callout)(pcre2_callout_block *,void *); /* Callout function or NULL */
#ifdef HEAP_MATCH_RECURSE #ifdef HEAP_MATCH_RECURSE
void *match_frames_base; /* For remembering malloc'd frames */ void *match_frames_base; /* For remembering malloc'd frames */
#endif #endif
@ -809,7 +809,7 @@ typedef struct dfa_match_block {
PCRE2_UCHAR nl[4]; /* Newline string when fixed */ PCRE2_UCHAR nl[4]; /* Newline string when fixed */
uint16_t bsr_convention; /* \R interpretation */ uint16_t bsr_convention; /* \R interpretation */
void *callout_data; /* To pass back to callouts */ void *callout_data; /* To pass back to callouts */
int (*callout)(pcre2_callout_block *); /* Callout function or NULL */ int (*callout)(pcre2_callout_block *,void *); /* Callout function or NULL */
dfa_recursion_info *recursive; /* Linked list of recursion data */ dfa_recursion_info *recursive; /* Linked list of recursion data */
} dfa_match_block; } dfa_match_block;

5
src/pcre2_jit_compile.c
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@ -178,7 +178,7 @@ typedef struct jit_arguments {
pcre2_match_data *match_data; pcre2_match_data *match_data;
PCRE2_SPTR startchar_ptr; PCRE2_SPTR startchar_ptr;
PCRE2_UCHAR *mark_ptr; PCRE2_UCHAR *mark_ptr;
int (*callout)(pcre2_callout_block *); int (*callout)(pcre2_callout_block *, void *);
void *callout_data; void *callout_data;
/* Everything else after. */ /* Everything else after. */
sljit_ui limit_match; sljit_ui limit_match;
@ -6303,7 +6303,6 @@ if (arguments->callout == NULL)
return 0; return 0;
callout_block->version = 0; callout_block->version = 0;
callout_block->callout_data = arguments->callout_data;
/* Offsets in subject. */ /* Offsets in subject. */
callout_block->subject_length = arguments->end - arguments->begin; callout_block->subject_length = arguments->end - arguments->begin;
@ -6325,7 +6324,7 @@ for (i = 2; i < oveccount; i += 2)
callout_block->capture_top = (callout_block->capture_top >> 1) + 1; callout_block->capture_top = (callout_block->capture_top >> 1) + 1;
ovector[0] = PCRE2_UNSET; ovector[0] = PCRE2_UNSET;
ovector[1] = PCRE2_UNSET; ovector[1] = PCRE2_UNSET;
return (arguments->callout)(callout_block); return (arguments->callout)(callout_block, arguments->callout_data);
} }
/* Aligning to 8 byte. */ /* Aligning to 8 byte. */

8
src/pcre2_match.c
View File

@ -1311,7 +1311,6 @@ for (;;)
cb.callout_number = ecode[1]; cb.callout_number = ecode[1];
cb.capture_top = offset_top/2; cb.capture_top = offset_top/2;
cb.capture_last = mb->capture_last & CAPLMASK; cb.capture_last = mb->capture_last & CAPLMASK;
cb.callout_data = mb->callout_data;
cb.offset_vector = mb->ovector; cb.offset_vector = mb->ovector;
cb.mark = mb->nomatch_mark; cb.mark = mb->nomatch_mark;
cb.subject = mb->start_subject; cb.subject = mb->start_subject;
@ -1320,7 +1319,8 @@ for (;;)
cb.current_position = (PCRE2_SIZE)(eptr - mb->start_subject); cb.current_position = (PCRE2_SIZE)(eptr - mb->start_subject);
cb.pattern_position = GET(ecode, 2); cb.pattern_position = GET(ecode, 2);
cb.next_item_length = GET(ecode, 2 + LINK_SIZE); cb.next_item_length = GET(ecode, 2 + LINK_SIZE);
if ((rrc = mb->callout(&cb)) > 0) RRETURN(MATCH_NOMATCH); if ((rrc = mb->callout(&cb, mb->callout_data)) > 0)
RRETURN(MATCH_NOMATCH);
if (rrc < 0) RRETURN(rrc); if (rrc < 0) RRETURN(rrc);
} }
@ -1715,7 +1715,6 @@ for (;;)
cb.callout_number = ecode[1]; cb.callout_number = ecode[1];
cb.capture_top = offset_top/2; cb.capture_top = offset_top/2;
cb.capture_last = mb->capture_last & CAPLMASK; cb.capture_last = mb->capture_last & CAPLMASK;
cb.callout_data = mb->callout_data;
cb.offset_vector = mb->ovector; cb.offset_vector = mb->ovector;
cb.mark = mb->nomatch_mark; cb.mark = mb->nomatch_mark;
cb.subject = mb->start_subject; cb.subject = mb->start_subject;
@ -1724,7 +1723,8 @@ for (;;)
cb.current_position = (PCRE2_SIZE)(eptr - mb->start_subject); cb.current_position = (PCRE2_SIZE)(eptr - mb->start_subject);
cb.pattern_position = GET(ecode, 2); cb.pattern_position = GET(ecode, 2);
cb.next_item_length = GET(ecode, 2 + LINK_SIZE); cb.next_item_length = GET(ecode, 2 + LINK_SIZE);
if ((rrc = mb->callout(&cb)) > 0) RRETURN(MATCH_NOMATCH); if ((rrc = mb->callout(&cb, mb->callout_data)) > 0)
RRETURN(MATCH_NOMATCH);
if (rrc < 0) RRETURN(rrc); if (rrc < 0) RRETURN(rrc);
} }
ecode += 2 + 2*LINK_SIZE; ecode += 2 + 2*LINK_SIZE;

22
src/pcre2test.c
View File

@ -929,11 +929,11 @@ are supported. */
#define PCRE2_SET_CALLOUT(a,b,c) \ #define PCRE2_SET_CALLOUT(a,b,c) \
if (test_mode == PCRE8_MODE) \ if (test_mode == PCRE8_MODE) \
pcre2_set_callout_8(G(a,8),(int (*)(pcre2_callout_block_8 *))b,c); \ pcre2_set_callout_8(G(a,8),(int (*)(pcre2_callout_block_8 *, void *))b,c); \
else if (test_mode == PCRE16_MODE) \ else if (test_mode == PCRE16_MODE) \
pcre2_set_callout_16(G(a,16),(int (*)(pcre2_callout_block_16 *))b,c); \ pcre2_set_callout_16(G(a,16),(int (*)(pcre2_callout_block_16 *, void *))b,c); \
else \ else \
pcre2_set_callout_32(G(a,32),(int (*)(pcre2_callout_block_32 *))b,c); pcre2_set_callout_32(G(a,32),(int (*)(pcre2_callout_block_32 *, void *))b,c);
#define PCRE2_SET_CHARACTER_TABLES(a,b) \ #define PCRE2_SET_CHARACTER_TABLES(a,b) \
if (test_mode == PCRE8_MODE) \ if (test_mode == PCRE8_MODE) \
@ -1304,10 +1304,10 @@ the three different cases. */
#define PCRE2_SET_CALLOUT(a,b,c) \ #define PCRE2_SET_CALLOUT(a,b,c) \
if (test_mode == G(G(PCRE,BITONE),_MODE)) \ if (test_mode == G(G(PCRE,BITONE),_MODE)) \
G(pcre2_set_callout_,BITONE)(G(a,BITONE), \ G(pcre2_set_callout_,BITONE)(G(a,BITONE), \
(int (*)(G(pcre2_callout_block_,BITONE) *))b,c); \ (int (*)(G(pcre2_callout_block_,BITONE) *, void *))b,c); \
else \ else \
G(pcre2_set_callout_,BITTWO)(G(a,BITTWO), \ G(pcre2_set_callout_,BITTWO)(G(a,BITTWO), \
(int (*)(G(pcre2_callout_block_,BITTWO) *))b,c); (int (*)(G(pcre2_callout_block_,BITTWO) *, void *))b,c);
#define PCRE2_SET_CHARACTER_TABLES(a,b) \ #define PCRE2_SET_CHARACTER_TABLES(a,b) \
if (test_mode == G(G(PCRE,BITONE),_MODE)) \ if (test_mode == G(G(PCRE,BITONE),_MODE)) \
@ -1510,7 +1510,7 @@ the three different cases. */
#define PCRE2_PATTERN_INFO(a,b,c,d) a = pcre2_pattern_info_8(G(b,8),c,d) #define PCRE2_PATTERN_INFO(a,b,c,d) a = pcre2_pattern_info_8(G(b,8),c,d)
#define PCRE2_PRINTINT(a) pcre2_printint_8(compiled_code8,outfile,a) #define PCRE2_PRINTINT(a) pcre2_printint_8(compiled_code8,outfile,a)
#define PCRE2_SET_CALLOUT(a,b,c) \ #define PCRE2_SET_CALLOUT(a,b,c) \
pcre2_set_callout_8(G(a,8),(int (*)(pcre2_callout_block_8 *))b,c) pcre2_set_callout_8(G(a,8),(int (*)(pcre2_callout_block_8 *, void *))b,c)
#define PCRE2_SET_CHARACTER_TABLES(a,b) pcre2_set_character_tables_8(G(a,8),b) #define PCRE2_SET_CHARACTER_TABLES(a,b) pcre2_set_character_tables_8(G(a,8),b)
#define PCRE2_SET_COMPILE_RECURSION_GUARD(a,b) \ #define PCRE2_SET_COMPILE_RECURSION_GUARD(a,b) \
pcre2_set_compile_recursion_guard_8(G(a,8),b) pcre2_set_compile_recursion_guard_8(G(a,8),b)
@ -1591,7 +1591,7 @@ the three different cases. */
#define PCRE2_PATTERN_INFO(a,b,c,d) a = pcre2_pattern_info_16(G(b,16),c,d) #define PCRE2_PATTERN_INFO(a,b,c,d) a = pcre2_pattern_info_16(G(b,16),c,d)
#define PCRE2_PRINTINT(a) pcre2_printint_16(compiled_code16,outfile,a) #define PCRE2_PRINTINT(a) pcre2_printint_16(compiled_code16,outfile,a)
#define PCRE2_SET_CALLOUT(a,b,c) \ #define PCRE2_SET_CALLOUT(a,b,c) \
pcre2_set_callout_16(G(a,16),(int (*)(pcre2_callout_block_16 *))b,c); pcre2_set_callout_16(G(a,16),(int (*)(pcre2_callout_block_16 *, void *))b,c);
#define PCRE2_SET_CHARACTER_TABLES(a,b) pcre2_set_character_tables_16(G(a,16),b) #define PCRE2_SET_CHARACTER_TABLES(a,b) pcre2_set_character_tables_16(G(a,16),b)
#define PCRE2_SET_COMPILE_RECURSION_GUARD(a,b) \ #define PCRE2_SET_COMPILE_RECURSION_GUARD(a,b) \
pcre2_set_compile_recursion_guard_16(G(a,16),b) pcre2_set_compile_recursion_guard_16(G(a,16),b)
@ -1672,7 +1672,7 @@ the three different cases. */
#define PCRE2_PATTERN_INFO(a,b,c,d) a = pcre2_pattern_info_32(G(b,32),c,d) #define PCRE2_PATTERN_INFO(a,b,c,d) a = pcre2_pattern_info_32(G(b,32),c,d)
#define PCRE2_PRINTINT(a) pcre2_printint_32(compiled_code32,outfile,a) #define PCRE2_PRINTINT(a) pcre2_printint_32(compiled_code32,outfile,a)
#define PCRE2_SET_CALLOUT(a,b,c) \ #define PCRE2_SET_CALLOUT(a,b,c) \
pcre2_set_callout_32(G(a,32),(int (*)(pcre2_callout_block_32 *))b,c); pcre2_set_callout_32(G(a,32),(int (*)(pcre2_callout_block_32 *, void *))b,c);
#define PCRE2_SET_CHARACTER_TABLES(a,b) pcre2_set_character_tables_32(G(a,32),b) #define PCRE2_SET_CHARACTER_TABLES(a,b) pcre2_set_character_tables_32(G(a,32),b)
#define PCRE2_SET_COMPILE_RECURSION_GUARD(a,b) \ #define PCRE2_SET_COMPILE_RECURSION_GUARD(a,b) \
pcre2_set_compile_recursion_guard_32(G(a,32),b) pcre2_set_compile_recursion_guard_32(G(a,32),b)
@ -4126,7 +4126,7 @@ Return:
*/ */
static int static int
callout_function(pcre2_callout_block_8 *cb) callout_function(pcre2_callout_block_8 *cb, void *callout_data_ptr)
{ {
uint32_t i, pre_start, post_start, subject_length; uint32_t i, pre_start, post_start, subject_length;
BOOL utf = (FLD(compiled_code, overall_options) & PCRE2_UTF) != 0; BOOL utf = (FLD(compiled_code, overall_options) & PCRE2_UTF) != 0;
@ -4216,9 +4216,9 @@ if (cb->mark != last_callout_mark)
last_callout_mark = cb->mark; last_callout_mark = cb->mark;
} }
if (cb->callout_data != NULL) if (callout_data_ptr != NULL)
{ {
int callout_data = *((int32_t *)(cb->callout_data)); int callout_data = *((int32_t *)callout_data_ptr);
if (callout_data != 0) if (callout_data != 0)
{ {
fprintf(outfile, "Callout data = %d\n", callout_data); fprintf(outfile, "Callout data = %d\n", callout_data);