URL:
<http://savannah.nongnu.org/bugs/?19050>
Summary: gcrt1.S should call main rather than jumping to it
Project: AVR C Runtime Library
Submitted by: joerg_wunsch
Submitted on: Tuesday 02/13/2007 at 13:29
Category: Library
Severity: 4 - Important
Priority: 5 - Normal
Item Group: Startup code
Status: None
Privacy: Public
Percent Complete: 0%
Assigned to: None
Originator Email: [EMAIL PROTECTED]
Open/Closed: Open
Discussion Lock: Any
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Details:
Now with GCC 4.x, main() is treated as a normal function. As
such, it must no longer be jumped to, but needs to be called
(with XCALL), and the value returned needs to be passed to
exit(). As the user can override exit() and thus implement
an exit() function that erroneously returns, we should
probably also supply an infinite loop in gcrt1.S that the
code falls into in case exit() ever returns -- much better
than having the program counter run into the wild.
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