https://bugs.llvm.org/show_bug.cgi?id=40591
Bug ID: 40591
Summary: Symbolizer should ignore undefined symbols
Product: tools
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: llvm-symbolizer
Assignee: unassignedb...@nondot.org
Reporter: jh7370.2...@my.bristol.ac.uk
CC: llvm-bugs@lists.llvm.org
llvm-symbolizer currently treats undefined symbols as symbols at address 0 and
so if 0 is specified as an input address, it will find that symbol, even if
there is a defined symbol at that location. I wrote a lit test to reproduce
this issue:
# symbolize-undef-syms.s
# REQUIRES: x86-registered-target
# RUN: llvm-mc --filetype=obj --triple=x86_64-pc-linux %s -o %t.o -g
# RUN: llvm-symbolizer --obj=%t.o 0 | FileCheck %s --implicit-check-not=bar
# CHECK: foo
# CHECK-NEXT: symbolize-undef-syms.s:14:0
.type bar,@function
.type foo,@function
.global foo
foo:
call bar
This test will fail because bar was picked instead of foo. It would be good to
never pick bar, even if there is no defined symbol, since bar cannot represent
that address.
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
