bc: simplify use of "ip" in loop parsing functions

function                                             old     new   delta
zbc_parse_stmt_possibly_auto                        2106    2065     -41
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-41)             Total: -41 bytes
   text	   data	    bss	    dec	    hex	filename
 982076	    485	   7296	 989857	  f1aa1	busybox_old
 982035	    485	   7296	 989816	  f1a78	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/testsuite/bc.tests b/testsuite/bc.tests
index 21b26008f..987461ebb 100755
--- a/testsuite/bc.tests
+++ b/testsuite/bc.tests
@@ -76,6 +76,37 @@ testing "bc print 1,2,3" \
         "123" \
         "" "print 1,2,3"
 
+testing "bc nested loops and breaks" \
+        "bc" \
+        "\
+11
+21
+31
+22
+12
+99
+" \
+        "" "\
+if(1) {
+        11
+        while(1) {
+                21
+                while(1) {
+                        31
+                        break
+                        32
+                }
+                22
+                break
+                23
+        }
+        12
+} else {
+        88
+}
+99
+"
+
 tar xJf bc_large.tar.xz
 
 for f in bc*.bc; do