https://sourceware.org/bugzilla/show_bug.cgi?id=16945
Bug ID: 16945
Summary: [Gold] Executable with -fpie and -mcmodel=large gives
segfault on start
Product: binutils
Version: 2.25 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: gold
Assignee: ian at airs dot com
Reporter: aivchenk at gmail dot com
CC: ccoutant at google dot com
> cat mcmodel_large.c
#include <stdlib.h>
#include <stdio.h>
int main()
{
fprintf(stdout, "Hello\n");
return 0;
}
> g++ -g -O0 -B/gold/.. mcmodel_large.c -fpic -mcmodel=large -o gold.out
> ./gold.out
Segmentation fault
The disassembler:
int main()
{
4005da: 55 push %rbp
4005db: 48 89 e5 mov %rsp,%rbp
4005de: 53 push %rbx
4005df: 48 83 ec 08 sub $0x8,%rsp
4005e3: 48 8d 1d f9 ff ff ff lea -0x7(%rip),%rbx #
4005e3<main+0x9>
4005ea: 49 bb fd 13 00 00 00 movabs $0x13fd,%r11
4005f1: 00 00 00
4005f4: 4c 01 db add %r11,%rbx
fprintf(stdout, "Hello\n");
4005f7: 48 b8 f8 ff ff ff 00 movabs $0xfffffff8,%rax
4005fe: 00 00 00
400601: 48 8b 04 03 mov (%rbx,%rax,1),%rax <<<
SEGFAULT
400605: 48 8b 00 mov (%rax),%rax
400608: 48 89 c1 mov %rax,%rcx
40060b: ba 06 00 00 00 mov $0x6,%edx
400610: be 01 00 00 00 mov $0x1,%esi
400615: 48 b8 10 ed ff ff ff movabs $0xffffffffffffed10,%rax
40061c: ff ff ff
40061f: 48 8d 3c 03 lea (%rbx,%rax,1),%rdi
400623: 48 b8 f0 ea ff ff ff movabs $0xffffffffffffeaf0,%rax
40062a: ff ff ff
40062d: 48 01 d8 add %rbx,%rax
400630: ff d0 callq *%rax
return 0;
400632: b8 00 00 00 00 mov $0x0,%eax
}
Addendum in instruction at 4005f7 is wrong..
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