Fix failure with pragma once where buffer is NULL and buffer_valid is true.

PR preprocessor/24202
* files.c (_cpp_pop_file_buffer): Set buffer_valid to false.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@106472 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 1 insertions, 0 deletions

diff --git a/libcpp/files.c b/libcpp/files.c
index 3951515da39..31c38d0bb80 100644
--- a/libcpp/files.c
+++ b/libcpp/files.c
@@ -1143,6 +1143,7 @@ _cpp_pop_file_buffer (cpp_reader *pfile, _cpp_file *file)
     {
       free ((void *) file->buffer);
       file->buffer = NULL;
+      file->buffer_valid = false;
     }
 }