Re: Bus error with gcc on simple function?
Re: Bus error with gcc on simple function?
- Subject: Re: Bus error with gcc on simple function?
- From: Ben Weiss <email@hidden>
- Date: Thu, 12 Apr 2007 15:17:03 -0700
Bill,
Below are the build results from Xcode 2.4.1 (this time running on a
MacBook Pro, targeting x86 with SSE enabled). You may have to to add
the following line of code, to properly define the vector types:
#include <Accelerate/Accelerate.h> // and link with the Accelerate
framework
Any insight?
-Ben
--------
CompileC build/Test.build/Debug/Test.build/Objects-normal/i386/
Test.o /Users/benweiss/Documents/Projects/Test/Core/Source/Graphics/
Test.cpp normal i386 c++ com.apple.compilers.gcc.4_0
cd /Users/benweiss/Documents/Projects/Test/Core
/usr/bin/gcc-4.0 -x c++ -arch i386 -pipe -Wno-trigraphs -fpascal-
strings -fasm-blocks -g -O0 -Wreturn-type -Wunused-variable -
DMAC_ENV=1 -DTestDebug_=1 -fmessage-length=0 -ffast-math -mfix-and-
continue -mmacosx-version-min=10.4 -I/Users/benweiss/Documents/
Projects/Test/Core/build/Test.build/Debug/Test.build/Test_d.hmap -F/
Users/benweiss/Documents/Projects/Test/Core/build/Debug -I/Users/
benweiss/Documents/Projects/Test/Core/build/Debug/include -I/Users/
benweiss/Documents/Projects/Test/Core/build/Test.build/Debug/
Test.build/DerivedSources -isysroot /Developer/SDKs/MacOSX10.4u.sdk -
include /Library/Caches/com.apple.Xcode.501/SharedPrecompiledHeaders/
Test.xcode_Prefix-hizevdjufwddsueytcawmlhxcwwd/Test.xcode_Prefix.pch -
c /Users/benweiss/Documents/Projects/Test/Core/Source/Graphics/
Test.cpp -o /Users/benweiss/Documents/Projects/Test/Core/build/
Test.build/Debug/Test.build/Objects-normal/i386/Test.o
/Users/benweiss/Documents/Projects/Test/Core/Source/Graphics/
Test.cpp: In function 'void foo()':
/Users/benweiss/Documents/Projects/Test/Core/Source/Graphics/Test.cpp:
25: warning: unused variable 'mult_'
/Users/benweiss/Documents/Projects/Test/Core/Source/Graphics/Test.cpp:
28: internal compiler error: Segmentation fault
Please submit a full bug report, with preprocessed source if
appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
{standard input}:9:FATAL:.abort detected. Assembly stopping.
--------
On Apr 10, 2007, at 7:36 PM, Bill Northcott wrote:
On 10/04/2007, at 5:08 AM, Ben Weiss wrote:
there?) The crash occurs here regardless of target platform, so the
bug must be in the preprocessor somewhere. Anyway, is this the
preferred syntax for initializing an array of vectors, or is there a
better way?
The code below compiles for me
static void foo() {
#if __VEC__
typedef vector float vfloat;
#elif __SSE__
typedef vFloat vfloat;
#endif
vfloat mult_[4] = { { 1.0f, 1.0f, 1.0f, 1.0f },
{ 2.0f, 2.0f, 2.0f, 2.0f },
{ 3.0f, 3.0f, 3.0f, 3.0f },
{ 4.0f, 4.0f, 4.0f, 4.0f } };
}
[PM-G5BN:Public/Darwin/sse_crasher] billn% gcc -faltivec crasher.c
/usr/bin/ld: Undefined symbols:
_main
collect2: ld returned 1 exit status
[PM-G5BN:Public/Darwin/sse_crasher] billn% gcc -v
Using built-in specs.
Target: powerpc-apple-darwin8
Configured with: /private/var/tmp/gcc/gcc-5367.obj~1/src/configure
--disable-checking -enable-werror --prefix=/usr --mandir=/share/man
--enable-languages=c,objc,c++,obj-c++ --program-transform-name=/^
[cg][^.-]*$/s/$/-4.0/ --with-gxx-include-dir=/include/c++/4.0.0 --
with-slibdir=/usr/lib --build=powerpc-apple-darwin8 --host=powerpc-
apple-darwin8 --target=powerpc-apple-darwin8
Thread model: posix
gcc version 4.0.1 (Apple Computer, Inc. build 5367)
[PM-G5BN:Public/Darwin/sse_crasher] billn%
2GHz Dual G5, 3GB, 10.4.9 and Xcode 2.4.1
What is your compile command?
Bill Northcott
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