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Check for NULL prompt in readline_into_buffer()

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Previously, passing readline() or readline_into_buffer() a NULL 'prompt'
parameter would result in puts() printing garbage when
CONFIG_CMDLINE_EDITING was enabled.

Note that no board currently triggers this bug.  Enabling
CONFIG_CMDLINE_EDITING on some boards (eg bab7xx) would result in
the bug appearing.  This change is only intended to prevent someone
from running into this issue in the future.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
This commit is contained in:
Peter Tyser 2009-10-25 15:12:52 -05:00 committed by Wolfgang Denk
parent 16d1c10783
commit e491a71e57
1 changed files with 2 additions and 1 deletions
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3
common/main.c
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@ -964,7 +964,8 @@ int readline_into_buffer (const char *const prompt, char * buffer)
initted = 1;
}
puts (prompt);
if (prompt)
puts (prompt);
rc = cread_line(prompt, p, &len);
return rc < 0 ? rc : len;