Implemented non-recursive SRE matching.

1 files changed, 6 insertions, 4 deletions

diff --git a/Modules/sre.h b/Modules/sre.h
index a7fdfbab64..452e77a725 100644
--- a/Modules/sre.h
+++ b/Modules/sre.h
@@ -55,6 +55,7 @@ typedef unsigned int (*SRE_TOLOWER_HOOK)(unsigned int ch);
 typedef struct SRE_REPEAT_T {
     int count;
     SRE_CODE* pattern; /* points to REPEAT operator arguments */
+    void* last_ptr; /* helper to check for infinite loops */
     struct SRE_REPEAT_T *prev; /* points to previous repeat context */
 } SRE_REPEAT;
 
@@ -74,10 +75,11 @@ typedef struct {
     int lastmark;
     void* mark[SRE_MARK_SIZE];
     /* dynamically allocated stuff */
-    void** mark_stack;
-    int mark_stack_size;
-    int mark_stack_base;
-    SRE_REPEAT *repeat; /* current repeat context */
+    char* data_stack;
+    int data_stack_size;
+    int data_stack_base;
+    /* current repeat context */
+    SRE_REPEAT *repeat;
     /* hooks */
     SRE_TOLOWER_HOOK lower;
 } SRE_STATE;