fix warning

[libfirm] / ir / debug / dbginfo.c

diff --git a/ir/debug/dbginfo.c b/ir/debug/dbginfo.c
index a4fd57c..73f8aea 100644 (file)
--- a/ir/debug/dbginfo.c
+++ b/ir/debug/dbginfo.c
@@ -127,10 +127,11 @@ void ir_set_type_debug_retrieve(retrieve_type_dbg_func func)
 void ir_retrieve_type_dbg_info(char *buffer, size_t buffer_size,
                                const type_dbg_info *tdbgi)
 {
+       buffer[0] = '\0';
        if (retrieve_type_dbg)
                retrieve_type_dbg(buffer, buffer_size, tdbgi);
        assert(buffer_size > 0);
-       buffer[0] = 0;
+       buffer[buffer_size-1] = '\0';
 }
 
 void ir_dbg_info_snprint(char *buf, size_t bufsize, const dbg_info *dbg)