http://llvm.org/bugs/show_bug.cgi?id=17056
Bug ID: 17056
Summary: llvm-nm crashes when processing an archive
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 11133
--> http://llvm.org/bugs/attachment.cgi?id=11133&action=edit
File causing the crash.
$ build-opt/bin/./llvm-nm -s
build-opt/test/Object/Output/archive-symtab.test.tmp.a
trivial-object-test.elf-x86-64:
U SomeOtherFunction
00000000 T main
U puts
Invalid alignment for ELF file!
UNREACHABLE executed at ../lib/Object/ELFObjectFile.cpp:67!
0 llvm-nm 0x000000000055e815
1 llvm-nm 0x000000000055ec79
2 libpthread.so.0 0x00007f4e10973cb0
3 libc.so.6 0x00007f4e102db425 gsignal + 53
4 libc.so.6 0x00007f4e102deb8b abort + 379
5 llvm-nm 0x0000000000540224
6 llvm-nm 0x000000000042dd75
7 llvm-nm 0x000000000042b397
8 llvm-nm 0x000000000042a1a9
9 llvm-nm 0x0000000000409693
10 libc.so.6 0x00007f4e102c676d __libc_start_main + 237
11 llvm-nm 0x00000000004086f9
Stack dump:
Aborted (core dumped)
This started happening after r189489. The Object/archive-symtab.test test
produces an invalid archive and then llvm-nm crashes, so it may be actually two
bugs for the price of one.
- llvm-nm should not crash, even on invalid input.
- the invalid archive should not have been introduced in the first place.
I am unsure why this breakage was not detected any of the build bots. I suppose
it must be some strange combination of build flags I have set.
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