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Diffstat (limited to 'test/ELF/textrel.s')
-rw-r--r-- | test/ELF/textrel.s | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/test/ELF/textrel.s b/test/ELF/textrel.s new file mode 100644 index 0000000000000..fac67d542af78 --- /dev/null +++ b/test/ELF/textrel.s @@ -0,0 +1,40 @@ +# REQUIRES: x86 +# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux-gnu %s -o %t.o + +# Without --warn-text-ifunc, lld should run fine: +# RUN: ld.lld -z notext %t.o -o %t2 + +# With --warn-text-ifunc, lld should run with warnings: +# RUN: ld.lld --warn-ifunc-textrel -z notext %t.o -o /dev/null 2>&1 | FileCheck %s +# CHECK: using ifunc symbols when text relocations are allowed may produce +# CHECK-SAME: a binary that will segfault, if the object file is linked with +# CHECK-SAME: old version of glibc (glibc 2.28 and earlier). If this applies to +# CHECK-SAME: you, consider recompiling the object files without -fPIC and +# CHECK-SAME: without -Wl,-z,notext option. Use -no-warn-ifunc-textrel to +# CHECK-SAME: turn off this warning. +# CHECK: >>> defined in {{.*}} +# CHECK: >>> referenced by {{.*}}:(.text+0x8) + +# Without text relocations, lld should run fine: +# RUN: ld.lld --fatal-warnings %t.o -o /dev/null + +.text +.globl a_func_impl +a_func_impl: + nop + +.globl selector +.type selector,@function +selector: + movl $a_func_impl, %eax + retq + +.globl a_func +.type a_func,@gnu_indirect_function +.set a_func, selector + +.globl _start +.type _start,@function +main: + callq a_func + retq |