diff mbox series

[committed] libstdc++: Add comment to 17_intro/names.cc test

Message ID 20220914182337.263664-1-jwakely@redhat.com
State New, archived
Headers
Series [committed] libstdc++: Add comment to 17_intro/names.cc test |

Commit Message

Jonathan Wakely Sept. 14, 2022, 6:23 p.m. UTC 
  Tested x86_64-linux, pushed to trunk.

-- >8 --

libstdc++-v3/ChangeLog:

	* testsuite/17_intro/names.cc: Explain why poison pragma can't
	be used.
---
 libstdc++-v3/testsuite/17_intro/names.cc | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/libstdc++-v3/testsuite/17_intro/names.cc b/libstdc++-v3/testsuite/17_intro/names.cc
index 86fb8f8999b..82e201c71b0 100644
--- a/libstdc++-v3/testsuite/17_intro/names.cc
+++ b/libstdc++-v3/testsuite/17_intro/names.cc
@@ -20,6 +20,8 @@ 
 
 // Define macros for some common variables names that we must not use for
 // naming variables, parameters etc. in the library.
+// N.B. we cannot use '#pragma GCC poison A' because that also prevents using
+// these names even as macro arguments, e.g. #define FOO(A) BAR(A)
 #define A (
 #define B (
 #define C (