[LLVMbugs] [Bug 18620] New: [MIPS] A call PIC function problem in shared link without '-fPIC'

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sat Jan 25 21:48:01 PST 2014


            Bug ID: 18620
           Summary: [MIPS] A call PIC function problem in shared link
                    without '-fPIC'
           Product: clang
           Version: 3.4
          Hardware: SGI
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: r at hev.cc
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 11941
  --> http://llvm.org/bugs/attachment.cgi?id=11941&action=edit
Assembly source codes without -fPIC

Simple test case:
#include <stdio.h>

main (int argc, char *argv[])
        printf ("Hello\n");
        return 0;

Compiled without -fPIC:
[heiher at archlinux work]$ clang -march=mips64r2 -mabi=n32 -o test test.c
/tmp/test-c0d709.s: Assembler messages:
/tmp/test-c0d709.s:30: Warning: macro instruction expanded into multiple
[heiher at archlinux work]$ ./test 
Segmentation fault (core dumped)

Compiled with -fPIC:
[heiher at archlinux work]$ clang -march=mips64r2 -mabi=n32 -fPIC -o test test.c
[heiher at archlinux work]$ ./test 

clang version:
clang version 3.4 (tags/RELEASE_34/final)
Target: mips64el-unknown-linux-gnu
Thread model: posix
Found candidate GCC installation:
Found candidate GCC installation: /usr/lib/gcc/mips64el-unknown-linux-gnu/4.8.2
Selected GCC installation: /usr/bin/../lib/gcc/mips64el-unknown-linux-gnu/4.8.2

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