[njs] Fixes in generating "continue" and "break" statements.

[Igor Sysoev]

details:   http://hg.nginx.org/njs/rev/462f7d2113f9
branches:  
changeset: 205:462f7d2113f9
user:      Igor Sysoev <igor at sysoev.ru>
date:      Tue Oct 18 15:48:13 2016 +0300
description:
Fixes in generating "continue" and "break" statements.

diffstat:

 njs/njs_generator.c      |  8 ++++----
 njs/test/njs_unit_test.c |  3 +++
 2 files changed, 7 insertions(+), 4 deletions(-)

diffs (38 lines):

diff -r d055824ff0f7 -r 462f7d2113f9 njs/njs_generator.c
--- a/njs/njs_generator.c	Mon Oct 17 23:29:15 2016 +0300
+++ b/njs/njs_generator.c	Tue Oct 18 15:48:13 2016 +0300
@@ -1089,8 +1089,8 @@ found:
     patch = nxt_mem_cache_alloc(vm->mem_cache_pool, sizeof(njs_parser_patch_t));
 
     if (nxt_fast_path(patch != NULL)) {
-        patch->next = parser->block->continuation;
-        parser->block->continuation = patch;
+        patch->next = block->continuation;
+        block->continuation = patch;
 
         njs_generate_code(parser, njs_vmcode_jump_t, jump);
         jump->code.operation = njs_vmcode_jump;
@@ -1133,8 +1133,8 @@ found:
     patch = nxt_mem_cache_alloc(vm->mem_cache_pool, sizeof(njs_parser_patch_t));
 
     if (nxt_fast_path(patch != NULL)) {
-        patch->next = parser->block->exit;
-        parser->block->exit = patch;
+        patch->next = block->exit;
+        block->exit = patch;
 
         njs_generate_code(parser, njs_vmcode_jump_t, jump);
         jump->code.operation = njs_vmcode_jump;
diff -r d055824ff0f7 -r 462f7d2113f9 njs/test/njs_unit_test.c
--- a/njs/test/njs_unit_test.c	Mon Oct 17 23:29:15 2016 +0300
+++ b/njs/test/njs_unit_test.c	Tue Oct 18 15:48:13 2016 +0300
@@ -1657,6 +1657,9 @@ static njs_unit_test_t  njs_test[] =
                  "for (i in a) { if (a[i] > 4) continue; s += a[i] } s"),
       nxt_string("10") },
 
+    { nxt_string("var a; for (a = 1; a; a--) switch (a) { case 0: continue }"),
+      nxt_string("undefined") },
+
     /* break. */
 
     { nxt_string("break"),