[LLVMbugs] [Bug 8610] New: floating point exception support

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Mon Nov 15 07:29:13 PST 2010 

http://llvm.org/bugs/show_bug.cgi?id=8610

           Summary: floating point exception support
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Driver
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: Axel.Naumann at cern.ch
                CC: llvmbugs at cs.uiuc.edu


Hi,

attached file doesn't compile with
$ clang++ -c TUnixSystem.cxx
See output with -v below. GCC is happy with it. Is floating point exception
support available for Linux?

Cheers, Axel.


$ clang++ -v -c TUnixSystem.cxx 
clang version 2.9 (trunk 119140)
Target: x86_64-unknown-linux-gnu
Thread model: posix
 "/build/llvm/opt-inst/bin/clang" -cc1 -triple x86_64-unknown-linux-gnu
-emit-obj -mrelax-all -disable-free -main-file-name TUnixSystem.cxx
-mrelocation-model static -mdisable-fp-elim -masm-verbose -mconstructor-aliases
-munwind-tables -target-cpu x86-64 -target-linker-version 2.20.51 -v
-resource-dir /build/llvm/opt-inst/bin/../lib/clang/2.9 -ferror-limit 19
-fmessage-length 114 -fexceptions -fgnu-runtime -fdiagnostics-show-option
-fcolor-diagnostics -o TUnixSystem.o -x c++ TUnixSystem.cxx
clang -cc1 version 2.9 based upon llvm 2.9svn hosted on
x86_64-unknown-linux-gnu
ignoring nonexistent directory "/usr/include/c++/4.4/i486-linux-gnu/64"
ignoring nonexistent directory "/usr/include/c++/4.3"
ignoring nonexistent directory "/usr/include/c++/4.3/x86_64-linux-gnu/"
ignoring nonexistent directory "/usr/include/c++/4.3/backward"
ignoring nonexistent directory "/usr/include/c++/4.3"
ignoring nonexistent directory "/usr/include/c++/4.3/i486-linux-gnu/64"
ignoring nonexistent directory "/usr/include/c++/4.3/backward"
ignoring nonexistent directory "/usr/include/c++/4.3"
ignoring nonexistent directory "/usr/include/c++/4.3/arm-linux-gnueabi/"
ignoring nonexistent directory "/usr/include/c++/4.3/backward"
ignoring nonexistent directory "/usr/include/c++/4.2"
ignoring nonexistent directory "/usr/include/c++/4.2/x86_64-linux-gnu/"
ignoring nonexistent directory "/usr/include/c++/4.2/backward"
ignoring nonexistent directory "/usr/include/c++/4.2"
ignoring nonexistent directory "/usr/include/c++/4.2/i486-linux-gnu/64"
ignoring nonexistent directory "/usr/include/c++/4.2/backward"
ignoring nonexistent directory "/usr/include/c++/4.1"
ignoring nonexistent directory "/usr/include/c++/4.1/x86_64-linux-gnu/"
ignoring nonexistent directory "/usr/include/c++/4.1/backward"
ignoring nonexistent directory "/usr/include/c++/4.1"
ignoring nonexistent directory "/usr/include/c++/4.1/i486-linux-gnu/64"
ignoring nonexistent directory "/usr/include/c++/4.1/backward"
ignoring nonexistent directory "/usr/include/c++/4.5.1/x86_64-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.5.1/i686-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.4.4"
ignoring nonexistent directory "/usr/include/c++/4.4.4/x86_64-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.4.4/backward"
ignoring nonexistent directory "/usr/include/c++/4.4.4"
ignoring nonexistent directory "/usr/include/c++/4.4.4/i686-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.4.4/backward"
ignoring nonexistent directory "/usr/include/c++/4.4.3"
ignoring nonexistent directory "/usr/include/c++/4.4.3/x86_64-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.4.3/backward"
ignoring nonexistent directory "/usr/include/c++/4.4.3"
ignoring nonexistent directory "/usr/include/c++/4.4.3/i686-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.4.3/backward"
ignoring nonexistent directory "/usr/include/c++/4.4.2"
ignoring nonexistent directory "/usr/include/c++/4.4.2/x86_64-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.4.2/backward"
ignoring nonexistent directory "/usr/include/c++/4.4.2"
ignoring nonexistent directory "/usr/include/c++/4.4.2/i686-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.4.2/backward"
ignoring nonexistent directory "/usr/include/c++/4.4.1"
ignoring nonexistent directory "/usr/include/c++/4.4.1/x86_64-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.4.1/backward"
ignoring nonexistent directory "/usr/include/c++/4.4.1"
ignoring nonexistent directory "/usr/include/c++/4.4.1/i586-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.4.1/backward"
ignoring nonexistent directory "/usr/include/c++/4.3.2"
ignoring nonexistent directory "/usr/include/c++/4.3.2/x86_64-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.3.2/backward"
ignoring nonexistent directory "/usr/include/c++/4.3.2"
ignoring nonexistent directory "/usr/include/c++/4.3.2/i386-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.3.2/backward"
ignoring nonexistent directory "/usr/include/c++/4.3.0"
ignoring nonexistent directory "/usr/include/c++/4.3.0/x86_64-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.3.0/backward"
ignoring nonexistent directory "/usr/include/c++/4.3.0"
ignoring nonexistent directory "/usr/include/c++/4.3.0/i386-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.3.0/backward"
ignoring nonexistent directory "/usr/include/c++/4.1.2"
ignoring nonexistent directory "/usr/include/c++/4.1.2/x86_64-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.1.2/backward"
ignoring nonexistent directory "/usr/include/c++/4.1.2"
ignoring nonexistent directory "/usr/include/c++/4.1.2/i386-redhat-linux/"
ignoring nonexistent directory "/usr/include/c++/4.1.2/backward"
ignoring nonexistent directory "/usr/include/c++/4.4.3"
ignoring nonexistent directory "/usr/include/c++/4.4.3/x86_64-pc-linux-gnu/"
ignoring nonexistent directory "/usr/include/c++/4.4.3/backward"
ignoring nonexistent directory "/usr/include/c++/4.4.3"
ignoring nonexistent directory "/usr/include/c++/4.4.3/i686-pc-linux-gnu/"
ignoring nonexistent directory "/usr/include/c++/4.4.3/backward"
ignoring nonexistent directory "/usr/include/c++/4.3"
ignoring nonexistent directory "/usr/include/c++/4.3/i586-suse-linux/"
ignoring nonexistent directory "/usr/include/c++/4.3/backward"
ignoring nonexistent directory "/usr/include/c++/4.3"
ignoring nonexistent directory "/usr/include/c++/4.3/x86_64-suse-linux/"
ignoring nonexistent directory "/usr/include/c++/4.3/backward"
ignoring nonexistent directory "/usr/include/c++/4.4/i586-suse-linux/"
ignoring nonexistent directory "/usr/include/c++/4.4/x86_64-suse-linux/"
ignoring nonexistent directory "/usr/include/c++/4.3.1"
ignoring nonexistent directory "/usr/include/c++/4.3.1/i686-pc-linux-gnu/"
ignoring nonexistent directory "/usr/include/c++/4.3.1/backward"
ignoring nonexistent directory "/usr/include/c++/4.3.1"
ignoring nonexistent directory
"/usr/include/c++/4.3.1/x86_64-unknown-linux-gnu/"
ignoring nonexistent directory "/usr/include/c++/4.3.1/backward"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-linux-gnu/4.4.3/include/g++-v4"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-linux-gnu/4.4.3/include/g++-v4/i686-pc-linux-gnu/"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-linux-gnu/4.4.3/include/g++-v4/backward"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/include/g++-v4"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/include/g++-v4/i686-pc-linux-gnu/"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/include/g++-v4/backward"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-linux-gnu/4.3.2/include/g++-v4"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-linux-gnu/4.3.2/include/g++-v4/i686-pc-linux-gnu/"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-linux-gnu/4.3.2/include/g++-v4/backward"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4/i686-pc-linux-gnu/"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4/backward"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include/g++-v4"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include/g++-v4/i686-pc-linux-gnu/"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include/g++-v4/backward"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/4.3.2/include/g++-v4"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/4.3.2/include/g++-v4/x86_64-pc-linux-gnu/"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/4.3.2/include/g++-v4/backward"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/include/g++-v4"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/include/g++-v4/x86_64-pc-linux-gnu/"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/include/g++-v4/backward"
ignoring nonexistent directory "/usr/lib/llvm-gcc-4.2-9999/include/c++/4.2.1"
ignoring nonexistent directory
"/usr/lib/llvm-gcc-4.2-9999/include/c++/4.2.1/x86_64-pc-linux-gnu/"
ignoring nonexistent directory
"/usr/lib/llvm-gcc-4.2-9999/include/c++/4.2.1/backward"
ignoring duplicate directory "/usr/include/c++/4.4"
ignoring duplicate directory "/usr/include/c++/4.4/backward"
ignoring duplicate directory "/usr/include/c++/4.5.1"
ignoring duplicate directory "/usr/include/c++/4.5.1/backward"
ignoring duplicate directory "/usr/include/c++/4.4"
ignoring duplicate directory "/usr/include/c++/4.4/backward"
ignoring duplicate directory "/usr/include/c++/4.4"
ignoring duplicate directory "/usr/include/c++/4.4/backward"
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/c++/4.4
 /usr/include/c++/4.4/x86_64-linux-gnu
 /usr/include/c++/4.4/backward
 /usr/include/c++/4.5.1
 /usr/include/c++/4.5.1/backward
 /usr/local/include
 /build/llvm/opt-inst/bin/../lib/clang/2.9/include
 /usr/include
End of search list.
TUnixSystem.cxx:20:18: error: use of undeclared identifier 'FE_ALL_EXCEPT'
   feclearexcept(FE_ALL_EXCEPT);
                 ^
TUnixSystem.cxx:21:20: error: use of undeclared identifier 'feenableexcept'
   Int_t oldmask = feenableexcept(0);
                   ^
TUnixSystem.cxx:22:18: error: use of undeclared identifier 'FE_INVALID'
   if (oldmask & FE_INVALID  )   mask |= kInvalid;
                 ^
TUnixSystem.cxx:23:18: error: use of undeclared identifier 'FE_DIVBYZERO'
   if (oldmask & FE_DIVBYZERO)   mask |= kDivByZero;
                 ^
TUnixSystem.cxx:24:18: error: use of undeclared identifier 'FE_OVERFLOW'
   if (oldmask & FE_OVERFLOW )   mask |= kOverflow;
                 ^
TUnixSystem.cxx:25:18: error: use of undeclared identifier 'FE_UNDERFLOW'
   if (oldmask & FE_UNDERFLOW)   mask |= kUnderflow;
                 ^
TUnixSystem.cxx:26:18: error: use of undeclared identifier 'FE_INEXACT'
   if (oldmask & FE_INEXACT  )   mask |= kInexact;
                 ^
TUnixSystem.cxx:39:37: error: use of undeclared identifier 'FE_INVALID'
   if (mask & kInvalid  )   newm |= FE_INVALID;
                                    ^
TUnixSystem.cxx:40:37: error: use of undeclared identifier 'FE_DIVBYZERO'
   if (mask & kDivByZero)   newm |= FE_DIVBYZERO;
                                    ^
TUnixSystem.cxx:41:37: error: use of undeclared identifier 'FE_OVERFLOW'
   if (mask & kOverflow )   newm |= FE_OVERFLOW;
                                    ^
TUnixSystem.cxx:42:37: error: use of undeclared identifier 'FE_UNDERFLOW'
   if (mask & kUnderflow)   newm |= FE_UNDERFLOW;
                                    ^
TUnixSystem.cxx:43:37: error: use of undeclared identifier 'FE_INEXACT'
   if (mask & kInexact  )   newm |= FE_INEXACT;
                                    ^
TUnixSystem.cxx:44:18: error: use of undeclared identifier 'FE_ALL_EXCEPT'
   feclearexcept(FE_ALL_EXCEPT);
                 ^
TUnixSystem.cxx:45:20: error: use of undeclared identifier 'FE_ALL_EXCEPT'
   fedisableexcept(FE_ALL_EXCEPT);
                   ^
TUnixSystem.cxx:46:4: error: use of undeclared identifier 'feenableexcept'
   feenableexcept(newm);
   ^
15 errors generated.

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