2 files changed, 12 insertions, 3 deletions

diff --git a/miscutils/bc.c b/miscutils/bc.c
index a78cd591a..74847a328 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -7059,22 +7059,21 @@ static BC_STATUS zbc_vm_stdin(void)
         str = 0;
         for (;;) {
                 size_t len;
-                char *string;
 
                 bc_read_line(&buf);
                 len = buf.len - 1;
                 if (len == 0) // "" buf means EOF
                         break;
-                string = buf.v;
                 if (len == 1) {
                         if (str && buf.v[0] == G.send)
                                 str -= 1;
                         else if (buf.v[0] == G.sbgn)
                                 str += 1;
                 } else {
+                        char *string = buf.v;
                         while (*string) {
                                 char c = *string;
-                                if (string != buf.v && string[-1] != '\\') {
+                                if (string == buf.v || string[-1] != '\\') {
                                         // checking applet type is cheaper than accessing sbgn/send
                                         if (IS_BC) // bc: sbgn = send = '"'
                                                 str ^= (c == '"');
diff --git a/testsuite/bc.tests b/testsuite/bc.tests
index 4f0d50f73..5e8c47c0f 100755
--- a/testsuite/bc.tests
+++ b/testsuite/bc.tests
@@ -16,6 +16,16 @@ testing "bc comment 2: /*/ is not a closed comment" \
         "4\n" \
         "" "1 /*/ + 2 */ + 3"
 
+testing "bc backslash 1" \
+        "bc" \
+        "3\n" \
+        "" "1 \\\\\n + 2"
+
+testing "bc string 1" \
+        "bc" \
+        "STR\n" \
+        "" "\"STR\n\""
+
 tar xJf bc_large.tar.xz
 
 for f in bc*.bc; do