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List:       haiku-bugs
Subject:    [haiku-bugs] [Haiku] #15090: Some linker situations able to crash a simple C++ program
From:       "Haiku" <trac () haiku-os ! org>
Date:       2019-05-28 19:53:36
Message-ID: 042.3b01ebd5b3462c14728f91b0d0edfcb2 () haiku-os ! org
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#15090: Some linker situations able to crash a simple C++ program
----------------------------+------------------------------
 Reporter:  jpcima          |        Owner:  nobody
     Type:  bug             |       Status:  new
 Priority:  normal          |    Milestone:  Unscheduled
Component:  - General       |      Version:  R1/Development
 Keywords:  gcc c++ linker  |   Blocked By:
 Blocking:                  |  Has a Patch:  0
 Platform:  All             |
----------------------------+------------------------------
 On attempt to compile a simple C++ hello world with iostream, one can
 cause a mix of c++ libraries which crashes before reaching main.
 It's based on the situation of a build using hpkg libraries and pkg-
 config.

 **Example**

 This works:
 g++ -std=c++11 -o hello hello.cc && ./hello

 But this crashes:
 g++ -std=c++11 -o hello hello.cc `pkg-config sdl2 libuv uchardet --libs`
 && ./hello


 The trouble makers are `-L` flags expanded by pkg-config, which add a path
 containing a libstdc++.a static library.

 The two tests show different `readelf -d hello` output.
 The working case indicated a dynamic link with libstdc++.so, the crashing
 case does not.

 **Details**

 Haiku shredder 1 hrev53167 May 26 2019 19:04:45 x86_64 x86_64 Haiku
 gcc version 8.3.0 (2019_05_24)

 libsdl2_devel-2.0.9-1
 libsdl2-2.0.9-1
 libuv_debuginfo-1.29.1-1
 libuv_devel-1.29.1-1
 libuv-1.29.1-1
 uchardet_devel-0.0.6-2
 uchardet-0.0.6-2
 libiconv_devel-1.15-4
 libiconv-1.15-4

 Additional notes https://git.io/fjRxD
 Report of program hit by linking bug https://git.io/fjRAH

-- 
Ticket URL: <https://dev.haiku-os.org/ticket/15090>
Haiku <https://dev.haiku-os.org>
The Haiku operating system.

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