Fix two issues in JIT.

ChangeLog

@@ -169,6 +169,9 @@ commas.
 
 48. Implemented PCRE2_ALT_VERBNAMES.
 
+49. Fixed two issues in JIT. These were found by Karl Skomski with a custom
+LLVM fuzzer.
+
 
 Version 10.20 30-June-2015
 --------------------------

src/pcre2_jit_compile.c

@@ -3748,6 +3748,7 @@ while (TRUE)
             }
           }
         while (chars[0] != 255 && bytes < bytes_end);
+        bytes = bytes_end - 32;
         }
 
       consumed++;
@@ -9508,7 +9509,6 @@ while (cc < ccend)
       OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), STR_PTR, 0);
       }
     BACKTRACK_AS(braminzero_backtrack)->matchingpath = LABEL();
-    if (cc[1] > OP_ASSERTBACK_NOT)
     count_match(common);
     break;
 

testdata/testinput17

@@ -249,4 +249,9 @@
 
 /(x(?1)){4}/
 
+/[axm]{7}/
+
+/(.|.)*?bx/
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabax
+
 # End of testinput17

testdata/testoutput17

@@ -198,7 +198,7 @@ May match empty string
 Subject length lower bound = 0
 JIT compilation was successful
    /* this is a C style comment */\=find_limits
-Minimum match limit = 1
+Minimum match limit = 29
  0: /* this is a C style comment */ (JIT)
  1: /* this is a C style comment */
 
@@ -222,17 +222,17 @@ Minimum match limit = 1
 
 /a(?:.)*?a/ims
     abbbbbbbbbbbbbbbbbbbbba\=find_limits
-Minimum match limit = 1
+Minimum match limit = 22
  0: abbbbbbbbbbbbbbbbbbbbba (JIT)
     
 /a(?:.(*THEN))*?a/ims
     abbbbbbbbbbbbbbbbbbbbba\=find_limits
-Minimum match limit = 1
+Minimum match limit = 22
  0: abbbbbbbbbbbbbbbbbbbbba (JIT)
 
 /a(?:.(*THEN:ABC))*?a/ims
     abbbbbbbbbbbbbbbbbbbbba\=find_limits
-Minimum match limit = 1
+Minimum match limit = 22
  0: abbbbbbbbbbbbbbbbbbbbba (JIT)
 
 /^(?>a+)(?>b+)(?>c+)(?>d+)(?>e+)/
@@ -483,4 +483,10 @@ Failed: error -46: JIT stack limit reached
 
 /(x(?1)){4}/
 
+/[axm]{7}/
+
+/(.|.)*?bx/
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabax
+Failed: error -47: match limit exceeded
+
 # End of testinput17