http://llvm.org/bugs/show_bug.cgi?id=8670
Summary: Optimization causes incorrect output.
Product: clang
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Created an attachment (id=5821)
--> (http://llvm.org/bugs/attachment.cgi?id=5821)
The bug in action.
If the code attached is compiled without optimization it outputs 6 as it
should. But if -O is used the output is wrong.
[j...@joel-pc list]$ clang list.c -o list
[j...@joel-pc list]$ ./list
6
[j...@joel-pc list]$ clang -O list.c -o list
[j...@joel-pc list]$ ./list
16474128
[j...@joel-pc list]$
The code in list.c is derived from wayland's(http://wayland.freedesktop.org/)
linked list code.
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