diff options
Diffstat (limited to 'src/unexw32.c')
| -rw-r--r-- | src/unexw32.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/unexw32.c b/src/unexw32.c index e8b553a87d3..a01ac799592 100644 --- a/src/unexw32.c +++ b/src/unexw32.c @@ -159,6 +159,14 @@ open_output_file (file_data *p_file, char *filename, unsigned long size) HANDLE file_mapping; void *file_base; + /* We delete any existing FILENAME because loadup.el will create a + hard link to it under the name emacs-XX.YY.ZZ.nn.exe. Evidently, + overwriting a file on Unix breaks any hard links to it, but that + doesn't happen on Windows. If we don't delete the file before + creating it, all the emacs-XX.YY.ZZ.nn.exe end up being hard + links to the same file, which defeats the purpose of these hard + links: being able to run previous builds. */ + DeleteFile (filename); file = CreateFile (filename, GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0); if (file == INVALID_HANDLE_VALUE) |