[Confuse-devel] [PATCH 2/3] confuse: do not move to a NULL buffer

[Carlo Marcelo Arenas Belon]

avoids a segfault when processing a buffer that called cfg_include

Signed-off-by: Carlo Marcelo Arenas Belon <address@hidden>
---
 src/lexer.l |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/src/lexer.l b/src/lexer.l
index 1e0fa91..bb996cd 100644
--- a/src/lexer.l
+++ b/src/lexer.l
@@ -342,7 +342,8 @@ void cfg_scan_string_end(void)
     /* restore to previous state
      */
     yy_delete_buffer(string_scan_state);
-    yy_switch_to_buffer(pre_string_scan_state);
+    if (pre_string_scan_state)
+        yy_switch_to_buffer(pre_string_scan_state);
     free(cfg_qstring);
     cfg_qstring = 0;
     qstring_index = qstring_len = 0;