[Bug target/14787] New: Unsatisfied symbol with using long doubles

[Bug target/14787] New: Unsatisfied symbol with using long doubles

[bangerth at dealii dot org]

One of our users couldn't link on his hpux box, and it turned out that there were some 
missing symbols for long double arithmetic. In particular, for this little program 
------------------------ 
  long double f(long double d) { return -d; } 
  int main () { return (int) f((long double)1.); } 
------------------------ 
he gets an unsatisfied reference to _U_Qfneg. 
 
Where is this symbol supposed to come from, or which library is supposed to contribute 
it? None of the libraries in his /usr/ tree have it. 
 
Luca: can you add the exact command line and output of running gcc on above example  
to this report? And also please attach the output of just running "gcc -v". 
 
Thanks 
  Wolfgang

-- 
           Summary: Unsatisfied symbol with using long doubles
           Product: gcc
           Version: 3.3.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bangerth at dealii dot org
                CC: gcc-bugs at gcc dot gnu dot org,heltai at dimat dot
                    unipv dot it,law at redhat dot com
GCC target triplet: hppa2.0n-hp-hpux11.00


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14787

[Bug target/14787] Unsatisfied symbol with using long doubles

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2004-03-30 21:35 -------
OK, the information come to me directly: 
 
-------------------- 
gcc -v 
Reading specs from /usr/local/lib/gcc-lib/hppa2.0n-hp-hpux11.00/3.3.2/specs 
Configured with: ./configure  : (reconfigured) ./configure  : (reconfigured) 
./configure  : (reconfigured) ./configure  : (reconfigured) ./configure  : 
(reconfigured) ./configure  : (reconfigured) ./configure  : (reconfigured) 
./configure 
: (reconfigured) ./configure  : (reconfigured) ./configure  : (reconfigured) 
./configure  : (reconfigured) ./configure  : (reconfigured) ./configure  : 
(reconfigured) ./configure  : (reconfigured) ./configure  : (reconfigured) 
./configure 
: (reconfigured) ./configure 
Thread model: single 
gcc version 3.3.2 
 
___test.cc___ 
 long double f(long double d) { return -d; } 
   int main () { return f((long double)1.); } 
___EOF___ 
 
 gcc test.cc -o test 
test.cc: In function `int main()': 
test.cc:2: warning: return to `int' from `long double' 
test.cc:2: warning: argument to `int' from `long double' 
/usr/ccs/bin/ld: Unsatisfied symbols: 
   _U_Qfneg (first referenced in /var/tmp//cc0WZhba.o) (code) 
collect2: ld returned 1 exit status 
 
 
Hope this helps. 
 
luca. 

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14787

[Bug target/14787] Unsatisfied symbol with using long doubles

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-04-04 06:32 -------
The symbol _U_Qfneg comes from libgcc, from the file config/pa/quadlib.c.



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14787

[Bug target/14787] Unsatisfied symbol with using long doubles

[danglin at gcc dot gnu dot org]

------- Additional Comments From danglin at gcc dot gnu dot org  2004-08-30 18:09 -------
This looks like gcc has been incorrectly installed.  I can't duplicate
this problem.

Would try the testcase with "-v" and determine if the linker has
been given the correct options to find libgcc.  Either the linker can't
find libgcc, or libgcc has been incorrectly built.  If the linker
finds libgcc, check with nm to see if the library contains the symbol
_U_Qfneg.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14787

[Bug target/14787] Unsatisfied symbol with using long doubles

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-30 18:33 -------
So closing as "works for me".

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WORKSFORME


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14787