From 0b0c63bbd82f98c958889534944da0d12164487d Mon Sep 17 00:00:00 2001
From: Matthew Vernon <matthew@debian.org>
Date: Sat, 24 Feb 2018 12:10:59 +0000
Subject: [PATCH] Revert "CVE-2017-7186 fix (upstream rev 670)"

This reverts commit 8a44b106f405e278f4fbbcd1e8b2744cd9afbc57.

Do this as we're now incorporating a new upstream version that
includes this fix, and there's a merge conflict in the testoutput
files.
---
 src/pcre2_internal.h     | 15 +--------------
 src/pcre2_ucd.c          | 14 --------------
 testdata/testinput12     |  3 ---
 testdata/testoutput12-16 |  6 ------
 testdata/testoutput12-32 |  4 ----
 5 files changed, 1 insertion(+), 41 deletions(-)

diff --git a/src/pcre2_internal.h b/src/pcre2_internal.h
index 7fb374d..5690870 100644
--- a/src/pcre2_internal.h
+++ b/src/pcre2_internal.h
@@ -1794,17 +1794,10 @@ typedef struct {
 /* UCD access macros */
 
 #define UCD_BLOCK_SIZE 128
-#define REAL_GET_UCD(ch) (PRIV(ucd_records) + \
+#define GET_UCD(ch) (PRIV(ucd_records) + \
         PRIV(ucd_stage2)[PRIV(ucd_stage1)[(int)(ch) / UCD_BLOCK_SIZE] * \
         UCD_BLOCK_SIZE + (int)(ch) % UCD_BLOCK_SIZE])
 
-#if PCRE2_CODE_UNIT_WIDTH == 32
-#define GET_UCD(ch) ((ch > MAX_UTF_CODE_POINT)? \
-  PRIV(dummy_ucd_record) : REAL_GET_UCD(ch))
-#else
-#define GET_UCD(ch) REAL_GET_UCD(ch)
-#endif
-
 #define UCD_CHARTYPE(ch)    GET_UCD(ch)->chartype
 #define UCD_SCRIPT(ch)      GET_UCD(ch)->script
 #define UCD_CATEGORY(ch)    PRIV(ucp_gentype)[UCD_CHARTYPE(ch)]
@@ -1861,9 +1854,6 @@ extern const uint8_t          PRIV(utf8_table4)[];
 #define _pcre2_default_compile_context PCRE2_SUFFIX(_pcre2_default_compile_context_)
 #define _pcre2_default_match_context   PCRE2_SUFFIX(_pcre2_default_match_context_)
 #define _pcre2_default_tables          PCRE2_SUFFIX(_pcre2_default_tables_)
-#if PCRE2_CODE_UNIT_WIDTH == 32
-#define _pcre2_dummy_ucd_record        PCRE2_SUFFIX(_pcre2_dummy_ucd_record_)
-#endif
 #define _pcre2_hspace_list             PCRE2_SUFFIX(_pcre2_hspace_list_)
 #define _pcre2_vspace_list             PCRE2_SUFFIX(_pcre2_vspace_list_)
 #define _pcre2_ucd_caseless_sets       PCRE2_SUFFIX(_pcre2_ucd_caseless_sets_)
@@ -1888,9 +1878,6 @@ extern const uint32_t                  PRIV(hspace_list)[];
 extern const uint32_t                  PRIV(vspace_list)[];
 extern const uint32_t                  PRIV(ucd_caseless_sets)[];
 extern const ucd_record                PRIV(ucd_records)[];
-#if PCRE2_CODE_UNIT_WIDTH == 32
-extern const ucd_record                PRIV(dummy_ucd_record)[];
-#endif
 extern const uint8_t                   PRIV(ucd_stage1)[];
 extern const uint16_t                  PRIV(ucd_stage2)[];
 extern const uint32_t                  PRIV(ucp_gbtable)[];
diff --git a/src/pcre2_ucd.c b/src/pcre2_ucd.c
index 56aa29d..116f537 100644
--- a/src/pcre2_ucd.c
+++ b/src/pcre2_ucd.c
@@ -41,20 +41,6 @@ const uint32_t PRIV(ucd_caseless_sets)[] = {0};
 
 const char *PRIV(unicode_version) = "8.0.0";
 
-/* If the 32-bit library is run in non-32-bit mode, character values
-greater than 0x10ffff may be encountered. For these we set up a
-special record. */
-
-#if PCRE2_CODE_UNIT_WIDTH == 32
-const ucd_record PRIV(dummy_ucd_record)[] = {{
-  ucp_Common,    /* script */
-  ucp_Cn,        /* type unassigned */
-  ucp_gbOther,   /* grapheme break property */
-  0,             /* case set */
-  0,             /* other case */
-  }};
-#endif
-
 /* When recompiling tables with a new Unicode version, please check the
 types in this structure definition from pcre2_internal.h (the actual
 field names will be different):
diff --git a/testdata/testinput12 b/testdata/testinput12
index 86f2c74..14a7715 100644
--- a/testdata/testinput12
+++ b/testdata/testinput12
@@ -343,7 +343,4 @@
 /./utf
     \x{110000}
 
-/\pP/ucp
-    \x{7fffffff}\=no_jit
-
 # End of testinput12
diff --git a/testdata/testoutput12-16 b/testdata/testoutput12-16
index b19f6c4..383a032 100644
--- a/testdata/testoutput12-16
+++ b/testdata/testoutput12-16
@@ -1367,10 +1367,4 @@ Subject length lower bound = 2
     \x{110000}
 ** Failed: character \x{110000} is greater than 0x10ffff and so cannot be converted to UTF-16
 
-/\pP/ucp
-    \x{7fffffff}\=no_jit
-** Character \x{7fffffff} is greater than 0xffff and UTF-16 mode is not enabled.
-** Truncation will probably give the wrong result.
-No match
-
 # End of testinput12
diff --git a/testdata/testoutput12-32 b/testdata/testoutput12-32
index 220f4f1..95f1834 100644
--- a/testdata/testoutput12-32
+++ b/testdata/testoutput12-32
@@ -1361,8 +1361,4 @@ Subject length lower bound = 2
     \x{110000}
 Failed: error -28: UTF-32 error: code points greater than 0x10ffff are not defined at offset 0
 
-/\pP/ucp
-    \x{7fffffff}\=no_jit
-No match
-
 # End of testinput12
-- 
2.30.2