Fixed crash in test suite (#4595)

2013-03-14 04:21:38 -07:00 · 2013-03-14 04:21:38 -07:00 · 0b22cb932e
parent 61d9424631
commit 0b22cb932e
1 changed files with 1 additions and 1 deletions
--- a/lib/preprocessor.cpp
+++ b/lib/preprocessor.cpp
@ -3004,7 +3004,7 @@ std::string Preprocessor::expandMacros(const std::string &code, std::string file
                    line.erase(pos1, pos2 - pos1);

                    // Don't glue this macro into variable or number after it
-                    if (std::isalnum(line[pos1]) || line[pos1] == '_')
+                    if (!line.empty() && (std::isalnum(line[pos1]) || line[pos1] == '_'))
                        macrocode.append(1,' ');

                    // insert expanded macro code