http://llvm.org/bugs/show_bug.cgi?id=2271
Summary: bug?
Product: new-bugs
Version: unspecified
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: new bugs
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
CC: [email protected]
Assuming integer types are 2's complement, the attached code appears to have
well-defined behavior. If I am misunderstanding something about C arithmetic
then I apologize profusely for wasting peoples' time. The source should be
small enough that someone can check this out relatively quickly.
With LLVM from recent svn on x86-32 I get the following:
[EMAIL PROTECTED] tmp1]$ llvm-gcc -O0 -fwrapv small.c ; ./a.out
foo
[EMAIL PROTECTED] tmp1]$ llvm-gcc -O1 -fwrapv small.c ; ./a.out
bar
For what it's worth "foo" is what gcc prints at all optimization levels.
--
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
_______________________________________________
LLVMbugs mailing list
[email protected]
http://lists.cs.uiuc.edu/mailman/listinfo/llvmbugs
