[Mingw-notify] [ mingw-Bugs-2986545 ] Assertion failure in LD

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Bugs item #2986545, was opened at 2010-04-13 15:26
Message generated for change (Comment added) made by dliauchuk
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Dzmitry Liauchuk (dliauchuk)
Assigned to: Nobody/Anonymous (nobody)
Summary: Assertion failure in LD

Initial Comment:
The following code causes assertion failure of LD during linking.

struct Foo
{
	Foo(void);
	int a;
};

#include <cstdio>

using std::putchar;

#define BAR(test)\
	asm("call 0\n\t"\
		"call *1\n\t"\
		"call *%%eax\n\t"\
		:"=r"(test));

Foo::Foo()
{
	int test = 0;
	BAR(test);
}

int main() {
	Foo f;
	f.a = 4;
	Foo s = f;
	s.a = 5;
	return 0;
}



Command line:
g++ -O0 -Wall -c -fmessage-length=0 -save-temps -osrc\bbb.o ..\src\bbb.cpp
g++ -obbb.exe src\bbb.o

The cause of the bug is the "call 0" within the inline assembly code.

----------------------------------------------------------------------

>Comment By: Dzmitry Liauchuk (dliauchuk)
Date: 2010-04-14 16:15

Message:
GCC version:

Reading specs from C:/Program
Files/MinGW/bin/../lib/gcc/mingw32/3.4.5/specs
Configured with: ../gcc-3.4.5-20060117-3/configure --with-gcc
--with-gnu-ld --wi
th-gnu-as --host=mingw32 --target=mingw32 --prefix=/mingw --enable-threads
--dis
able-nls --enable-languages=c,c++,f77,ada,objc,java
--disable-win32-registry --d
isable-shared --enable-sjlj-exceptions --enable-libgcj --disable-java-awt
--with
out-x --enable-java-gc=boehm --disable-libgcj-debug --enable-interpreter
--enabl
e-hash-synchronization --enable-libstdcxx-debug
Thread model: win32
gcc version 3.4.5 (mingw-vista special r3)


GNU ld (GNU Binutils) 2.18.50.20080625

----------------------------------------------------------------------

Comment By: Dzmitry Liauchuk (dliauchuk)
Date: 2010-04-13 15:27

Message:
Assertion failure text is:
C:\Program
Files\MinGW\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\mingw32\bin\ld.exe:
BFD (GNU Binutils) 2.20 assertion fail
../../binutils-2.20/bfd/coff-i386.c:525
C:\Program
Files\MinGW\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\mingw32\bin\ld.exe:
BFD (GNU Binutils) 2.20 assertion fail
../../binutils-2.20/bfd/coff-i386.c:525

----------------------------------------------------------------------

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