[Bug target/25722] Stackpointer is not restored correct at end of function

[anitha dot boyapati at atmel dot com]

--- Comment #3 from anitha dot boyapati at atmel dot com  2010-07-19 12:56 
---

When I tried with AVR Studio 4.18, Build 684, the program didn't crash.

I think the issue is not with compiler. Disassembly looks proper and call to
Evaluate() is returned. This can be verified by using breakpoints in assembly
statements.

119:  Evaluate();
+023E:   940E0056CALL  0x0056 Call subroutine
+0240:   CFFFRJMP  PC-0x  Relative jump

However when I tried to put breakpoint for 'while' statement, it did not work
out as the corresponding source line couldn't be found in the program memory.
This differs from the expected behavior.


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anitha dot boyapati at atmel dot com changed:

   What|Removed |Added

 CC||anitha dot boyapati at atmel
   ||dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25722

[Bug target/25722] Stackpointer is not restored correct at end of function

[anitha dot boyapati at atmel dot com]

--- Comment #4 from anitha dot boyapati at atmel dot com  2010-07-19 13:03 
---
SSA pass pass_remove_useless_stmts() removes useless statements and any code
beyond statements like while(1); will not be generated. This might be why the
breakpoint at while(TRUE); in the testcase is not recognised [and hence the
simulation looks like hanged/or not returned from evaluate() ]


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25722

[Bug target/25722] Stackpointer is not restored correct at end of function

[eric dot weddington at atmel dot com]

--- Comment #5 from eric dot weddington at atmel dot com  2010-07-19 13:43 
---
Closing as WORKSFORME based on comments #3, #4.


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eric dot weddington at atmel dot com changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution||WORKSFORME


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25722

[Bug target/25722] Stackpointer is not restored correct at end of function

[pinskia at gcc dot gnu dot org]

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pinskia at gcc dot gnu dot org changed:

   What|Removed |Added

   Severity|critical|normal


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25722

[Bug target/25722] Stackpointer is not restored correct at end of function

[berndtrog at yahoo dot com]

--- Comment #2 from berndtrog at yahoo dot com  2006-01-10 16:56 ---
Only 3.4.x seems allocate a frame pointer in the function 'Evaluate'.

It would be interesting if this bug can be triggered in 4.x!


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berndtrog at yahoo dot com changed:

   What|Removed |Added

 CC||berndtrog at yahoo dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25722

[Bug target/25722] Stackpointer is not restored correct at end of function

[bl at rosetechnology dot dk]

--- Comment #1 from bl at rosetechnology dot dk  2006-01-09 12:33 ---
Created an attachment (id=10598)
 -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10598action=view)
Testcase

Testcase including debug code for avr-studio 4. When the funtion 'Evaluate'
exits the program chrashes


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25722