feedc0de/qt-creator
1
0
Fork 0
forked from qt-creator/qt-creator
Code Pull Requests Activity

C++: Fix preprocessor blocked macro bug.

Browse Source 
By lexing the first token after a macro call (meaning: the token after
the closing parenthesis (which was passed to handleFunctionLikeMacro
which in turn pushed it back into the token buffer)), a token buffer
might be popped, which unblocks the macro that generated the actual
param pack. The effect was that if this happens in the expansion of a
recursive macro (with parameters!), the preprocessor ended up in an
infinite loop.

Task-number: QTCREATORBUG-9015
Task-number: QTCREATORBUG-9447

Change-Id: I0d83c59188ec15c4a948970e9fa944a17d765475
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>
This commit is contained in:
Erik Verbruggen
2013-06-10 15:12:17 +02:00
committed by Erik Verbruggen
parent d0afdfcc2b
commit 271c3f45a4
5 changed files with 26 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
tests/auto/cplusplus/preprocessor/data/recursive.2.cpp Normal file
View File

@@ -0,0 +1,6 @@
#define a(x) b(x) c(x)
#define b(x) c(x) a(x)
#define c(x) a(x) b(x)
b(1)
a(1)