This happened to me when I wanted to look at assembler output source using gcc
-S and for better readability choose -masm=intel option. -S only works fine. I
tried to cut my source and include short example which can be quickly verified.
I also checked this problem happen on mingw32 gcc ver 3.4.5
Try to compile this: gcc -S x.c -masm=intel
x.c:
=================================
#include <stdlib.h>
#include <stdio.h>
typedef struct {
unsigned long offset; // 32-bit offset
unsigned short selector; // 16-bit selector
} __attribute__((packed)) PM_FAR_POINTER;
int exec_ring0_code(unsigned long code_address, unsigned long ecx, unsigned
long *eax, unsigned long *edx)
{
PM_FAR_POINTER callgate_ptr;
asm __volatile__ (
"lcall *%5\n"
: "=a"(*eax), "=d"(*edx)
: "a"(*eax), "c"(ecx), "d"(*edx), "m" (callgate_ptr)
: "memory"
);
return(0);
}
=================================
result is:
x.c: In function 'exec_ring0_code':
x.c:19: internal compiler error: in print_operand, at config/i386/i386.c:7961
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
Assembler output x.S stops at line
"lcall *"
when I compile it with gcc -S x.c only it compile all without error
and mentioned line looks this:
"lcall *-6(%ebp)"
--
Summary: GCC failed to produce assembler output with -masm=intel
option
Product: gcc
Version: 4.2.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rayer at seznam dot cz
GCC build triplet: i386-pc-dos-djgpp, win32-mingw
GCC host triplet: i386-pc-dos-djgpp, win32-mingw
GCC target triplet: i386-pc-dos-djgpp, win32-mingw
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33918
