http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47597
Summary: ICE: call frame debugging information is not handled
when case is post_dec
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: anitha.boyap...@atmel.com
When a register is saved onto the stack, the relevant call frame debugging
information is not recorded in dwarf2out_frame_debug_expr() when stack follows
post_dec mode. As a result, targets whose STACK_PUSH_CODE is POST_DEC. An ICE
is observed when built for AVR target. Debugging shows that gcc_unreachable()
is called in MEM case.
The version of gcc used for testing is 4.4.3. But this support is not seen in
even the current latest version 169036 (line numbers: 2568 to 2678)
http://gcc.gnu.org/viewcvs/trunk/gcc/dwarf2out.c?revision=169036&view=markup
The host environment is x86_64 GNU/Linux. Target build is for AVR.
