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...we know it's "ok". Maybe -unsafe-math or something similar could disable this pass, because it is expensive and will impact generated code. What if, for globals, we insisted that the global be named "errno"? > I wouldn't be surprised if there was a system where the golbal error is not errno. Windows maybe? --renato -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20131123/36e00463/attachment.html>

...we do top-down propagation for static functions (or more-generally for LTO), then that could add overhead). > > > > > What if, for globals, we insisted that the global be named "errno"? > > > > I wouldn't be surprised if there was a system where the golbal error > is not errno. Windows maybe? Okay. We should check. Thanks again, Hal > > > --renato -- Hal Finkel Assistant Computational Scientist Leadership Computing Facility Argonne National Laboratory

Hello, On some systems (Linux/glibc, for example), some libm math functions (like cos(double)) might set errno. It is important that we model this, in general, to prevent miscompilation (we would not, for example, want to reorder a call to cos in between a call to open and a call to perror). However, almost no code in the wild checks errno after calls to libm math functions, and this

...that could add overhead). >> >> > >> > >> > >> > >> > What if, for globals, we insisted that the global be named "errno"? >> > >> > >> > >> > I wouldn't be surprised if there was a system where the golbal error >> > is not errno. Windows maybe? >> >> Okay. We should check. >> > > A Windows program can have two different global error numbers: Win32 and > C-Runtime flavor. > > The Win32 flavor is exposed via GetLastError/SetLastError[Ex] > The CRT flavor (e...

...ctions (or more-generally for LTO), then that could add overhead). > > > > > > > > > > > What if, for globals, we insisted that the global be named "errno"? > > > > > > > > I wouldn't be surprised if there was a system where the golbal error > > is not errno. Windows maybe? > > Okay. We should check. > A Windows program can have two different global error numbers: Win32 and C-Runtime flavor. The Win32 flavor is exposed via GetLastError/SetLastError[Ex] The CRT flavor (errno) is, currently, exposed via a macro tha...

...erally for LTO), then > that could add overhead). > > > > > > > > > > > > What if, for globals, we insisted that the global be named "errno"? > > > > > > > > I wouldn't be surprised if there was a system where the golbal > > error > > is not errno. Windows maybe? > > Okay. We should check. > > > > A Windows program can have two different global error numbers: Win32 > and C-Runtime flavor. > > > The Win32 flavor is exposed via GetLastError/SetLastError[Ex] > The CRT...

...r the command? Most examples I see are addprinter command is like this "addprinter = " I know there is more to that command than this just blank. Would some give me a good example of addprinter and delprinter command that works on Red Hat 9. Here is my smb.conf file. Thanks -Glenn [Golbal] netbios name = SERVER01 workgroup = domain security = user os level = 64 domain master = yes local master = yes prefered master = yes time server = yes unix extensions = yes encrypt passwords = yes domain logons = yes logon script = logon.bat socket options = SO_KEEPALIVE IPTOS_LOWDEL...

...head). > > > > > > > > > > > > > > > > > > > What if, for globals, we insisted that the global be named "errno"? > > > > > > > > > > > > I wouldn't be surprised if there was a system where the golbal > > > error > > > is not errno. Windows maybe? > > > > Okay. We should check. > > > > > > > > A Windows program can have two different global error numbers: Win32 > > and C-Runtime flavor. > > > > > > The Win32 flavor is...