http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43601
--- Comment #45 from Vadim Zeitlin <vz-gcc at zeitlins dot org> 2010-10-14 16:12:00 UTC --- Here are the files. Notice that about half of the size of the MSVC object file is taken by debug information ("/Zi" option was used when compiling it) while all gcc versions contain no debug information at all. More details about the file contents can be obtained using dumpbin Microsoft utility which I'd be glad to run for you if you don't have it. Here is just an overview for now: Microsoft (R) COFF/PE Dumper Version 9.00.30729.01 Copyright (C) Microsoft Corporation. All rights reserved. Dump of file build/msw/vc_mswudll/base/appbase.obj File Type: COFF OBJECT Summary 4 .CRT$XCU 29 .bss 3E9 .data 345D0 .debug$S 50 .debug$T 68D2 .drectve E67 .rdata 8BC .rdata$r 178 .sxdata 8A34 .text 13D3 .text$x 18 .text$yc 14 .text$yd 14B4 .xdata$x