FS#30004 - [gcc] Including <limits> header file fails when compiling with -m32

Attached to Project: Arch Linux
Opened by Dan Liew (delcypher) - Thursday, 24 May 2012, 19:03 GMT
Last edited by Allan McRae (Allan) - Thursday, 24 May 2012, 20:40 GMT
Task Type Bug Report
Category Packages: Extra
Status Closed
Assigned To Allan McRae (Allan)
Architecture x86_64
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description: When using C++ code that uses numeric_limits<> and using the g++ option -m32 on a 64-bit system the code fails to compile with a pretty unhelpful error message. I'm not completely sure if this is a bug.

Additional info:
Related packages installed:
local/gcc 4.7.0-6 (base-devel)
The GNU Compiler Collection - C and C++ frontends
local/gcc-ada 4.7.0-6
Ada front-end for GCC (GNAT)
local/gcc-libs 4.7.0-6 (base)
Runtime libraries shipped by GCC
local/lcov 1.9-1
front-end for GCC's coverage testing tool gcov
local/lib32-gcc-libs 4.7.0-6
Runtime libraries shipped by GCC (32-bit)

This is on a x86_64 Arch Linux install.

Steps to reproduce:
1. Try to compile the attached file "limits.cpp" with the following command
$ g++ -m32 limits.cpp

2. The following error is shown
In file included from limits.cpp:1:0:
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0/limits:1405:35:
error: template argument 1 is invalid
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0/limits:1479:44:
error: template argument 1 is invalid

If -m64 is used instead of -m32 the program compiles with out error.

Compiling with the -v option can be seen here http://pastebin.com/JRJcVDX2 . I noticed that there was a message relating to mismatching headers and libraries but I'm not sure if it is an issue.
   limits.cpp (0.1 KiB)
This task depends upon

Closed by  Allan McRae (Allan)
Thursday, 24 May 2012, 20:40 GMT
Reason for closing:  Not a bug
Comment by Evangelos Foutras (foutrelis) - Thursday, 24 May 2012, 19:55 GMT
You might need to install gcc-multilib.
Comment by Dan Liew (delcypher) - Thursday, 24 May 2012, 20:01 GMT
Thanks for the tip. I've done that and everything works as expected now. I foolishly assumed that Arch only had one gcc package and that installing lib32-gcc-libs and lib32-libstdc++5 would be sufficient to compile 32-bit executables.

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