Work on documentation.

[rpatk.git] / rex / rexcompiler.c

diff --git a/rex/rexcompiler.c b/rex/rexcompiler.c
index 0eb7fb6..71e5658 100644 (file)
--- a/rex/rexcompiler.c
+++ b/rex/rexcompiler.c
@@ -600,7 +600,10 @@ long rex_compiler_expression_s(rexcompiler_t *co, rexdb_t *rexdb, const char *st
 long rex_compiler_addexpression(rexcompiler_t *co, rexdb_t *rexdb, unsigned long prev, const char *str, unsigned int size, rexuserdata_t userdata)
 {
        rexstate_t *sprev = NULL, *scur = NULL;
-       long cur = rex_compiler_expression(co, rexdb, str, size, userdata);
+       long cur;
+       if (r_array_empty(rexdb->states))
+               prev = -1UL;
+       cur = rex_compiler_expression(co, rexdb, str, size, userdata);
        if (cur < 0)
                return -1;
        sprev = rex_db_getstate(rexdb, prev);