Public bug reported: This compiler bug is making the gnulib tests dump core; see:
http://lists.gnu.org/archive/html/bug-gnulib/2014-07/msg00039.html Compile and run the following program t.c with the shell commands "gcc u.c -lm; ./a.out; echo $?" #include <math.h> #pragma weak tgamma int main (void) { if (!tgamma) return 2; if (tgamma (1) == 1) return 0; return 1; } The program will exit with status 2. It should exit with status 0, because the math library does have a tgamma function and the function pointer should be non-null. I observe this problem with Ubuntu 14.04 x86-64 (GCC Ubuntu 4.8.2-19ubuntu1), but not on Fedora 20 or on RHEL 6.5. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: gcc 4:4.8.2-1ubuntu6 ProcVersionSignature: Ubuntu 3.13.0-30.55-generic 3.13.11.2 Uname: Linux 3.13.0-30-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 CurrentDesktop: Unity Date: Thu Jul 10 07:39:11 2014 InstallationDate: Installed on 2012-12-21 (566 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) SourcePackage: gcc-defaults UpgradeStatus: Upgraded to trusty on 2014-04-18 (83 days ago) ** Affects: gcc-defaults (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug trusty ** Attachment added: "test program illustrating the bug; compile with "gcc t.c -lm"" https://bugs.launchpad.net/bugs/1340250/+attachment/4149659/+files/t.c -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1340250 Title: "#pragma weak" symbol is 0 even when defined To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-defaults/+bug/1340250/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
