show the error string in the GUI rather than stderr

This makes the error string just be an internal "membuffer", which the
GUI can fetch and show when errors occur.  The error string keeps
accumulating until somebody retrieves it with "get_error_string()".

This should make any write errors actually show up to the user.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/dive.h b/dive.h
index 5188184b5..1455bb5df 100644
--- a/dive.h
+++ b/dive.h
@@ -661,6 +661,7 @@ extern "C" {
 #endif
 
 extern int report_error(const char *fmt, ...);
+extern const char *get_error_string(void);
 
 extern struct dive *find_dive_including(timestamp_t when);
 extern bool dive_within_time_range(struct dive *dive, timestamp_t when, timestamp_t offset);