[Commits] [SCM] claws branch, master, updated. 3.17.0-110-g2edb13e

[Colin]

The branch, master has been updated
       via  2edb13e5831d2e8b17274cf628a1ff1399da7bfd (commit)
      from  cb3f6bfba779f53100a9b21c09cb9489ad7469d0 (commit)

Summary of changes:
 src/common/file-utils.c |   13 +++++++++++++
 1 file changed, 13 insertions(+)


- Log -----------------------------------------------------------------
commit 2edb13e5831d2e8b17274cf628a1ff1399da7bfd
Author: Colin Leroy <colin at colino.net>
Date:   Wed Oct 10 10:09:11 2018 +0200

    Comment the my_tmpfile_with_len() function.

diff --git a/src/common/file-utils.c b/src/common/file-utils.c
index 0d6d227..e4d7a5e 100644
--- a/src/common/file-utils.c
+++ b/src/common/file-utils.c
@@ -827,6 +827,19 @@ FILE *my_tmpfile(void)
 	return tmpfile();
 }
 
+/* Returns a memory-backed FILE pointer to avoid file I/O
+ * where unnecessary. The "file" size is passed in the len
+ * parameter and is fixed: it's up to the caller to pass a
+ * large enough length to write to the FILE pointer. If the
+ * precise length isn't known, it is possible to ask for more.
+ * 
+ * In this case, once writing to the pointer is done, the 
+ * caller is responsible to call ftruncate(fileno(fp), ftell(fp))
+ * to make sure re-reading the stream will return EOF at the
+ * end of what we wrote. 
+ * Otherwise, re-reading the stream will return uninitialized
+ * memory at the end of the stream.
+ */
 FILE *my_tmpfile_with_len(size_t len)
 {
 #if HAVE_FMEMOPEN

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