tempfile: replace die("BUG") with BUG()

Compared to die(), using BUG() triggers abort(). That may
give us an actual coredump, which should make it easier to
get a stack trace. And since the programming error for these
assertions is not in the functions themselves but in their
callers, such a stack trace is needed to actually find the
source of the bug.

In addition, abort() raises SIGABRT, which is more likely to
be caught by our test suite.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/tempfile.c b/tempfile.c
index 861f817133f9eb1f30799d22ac06cfacec0bd64e..813cf6a81c86d4146f2486c480a4afe041066429 100644 (file)
--- a/tempfile.c
+++ b/tempfile.c
@@ -96,7 +96,7 @@ static void prepare_tempfile_object(struct tempfile *tempfile)
        }
 
        if (is_tempfile_active(tempfile))
-               die("BUG: prepare_tempfile_object called for active object");
+               BUG("prepare_tempfile_object called for active object");
        if (!tempfile->on_list) {
                /* Initialize *tempfile and add it to tempfile_list: */
                tempfile->fd = -1;
@@ -109,7 +109,7 @@ static void prepare_tempfile_object(struct tempfile *tempfile)
                tempfile->on_list = 1;
        } else if (tempfile->filename.len) {
                /* This shouldn't happen, but better safe than sorry. */
-               die("BUG: prepare_tempfile_object called for improperly-reset object");
+               BUG("prepare_tempfile_object called for improperly-reset object");
        }
 }
 
@@ -205,9 +205,9 @@ int xmks_tempfile_m(struct tempfile *tempfile, const char *template, int mode)
 FILE *fdopen_tempfile(struct tempfile *tempfile, const char *mode)
 {
        if (!is_tempfile_active(tempfile))
-               die("BUG: fdopen_tempfile() called for inactive object");
+               BUG("fdopen_tempfile() called for inactive object");
        if (tempfile->fp)
-               die("BUG: fdopen_tempfile() called for open object");
+               BUG("fdopen_tempfile() called for open object");
 
        tempfile->fp = fdopen(tempfile->fd, mode);
        return tempfile->fp;
@@ -216,21 +216,21 @@ FILE *fdopen_tempfile(struct tempfile *tempfile, const char *mode)
 const char *get_tempfile_path(struct tempfile *tempfile)
 {
        if (!is_tempfile_active(tempfile))
-               die("BUG: get_tempfile_path() called for inactive object");
+               BUG("get_tempfile_path() called for inactive object");
        return tempfile->filename.buf;
 }
 
 int get_tempfile_fd(struct tempfile *tempfile)
 {
        if (!is_tempfile_active(tempfile))
-               die("BUG: get_tempfile_fd() called for inactive object");
+               BUG("get_tempfile_fd() called for inactive object");
        return tempfile->fd;
 }
 
 FILE *get_tempfile_fp(struct tempfile *tempfile)
 {
        if (!is_tempfile_active(tempfile))
-               die("BUG: get_tempfile_fp() called for inactive object");
+               BUG("get_tempfile_fp() called for inactive object");
        return tempfile->fp;
 }
 
@@ -265,9 +265,9 @@ int close_tempfile_gently(struct tempfile *tempfile)
 int reopen_tempfile(struct tempfile *tempfile)
 {
        if (!is_tempfile_active(tempfile))
-               die("BUG: reopen_tempfile called for an inactive object");
+               BUG("reopen_tempfile called for an inactive object");
        if (0 <= tempfile->fd)
-               die("BUG: reopen_tempfile called for an open object");
+               BUG("reopen_tempfile called for an open object");
        tempfile->fd = open(tempfile->filename.buf, O_WRONLY);
        return tempfile->fd;
 }
@@ -275,7 +275,7 @@ int reopen_tempfile(struct tempfile *tempfile)
 int rename_tempfile(struct tempfile *tempfile, const char *path)
 {
        if (!is_tempfile_active(tempfile))
-               die("BUG: rename_tempfile called for inactive object");
+               BUG("rename_tempfile called for inactive object");
 
        if (close_tempfile_gently(tempfile)) {
                delete_tempfile(tempfile);