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Newsgroups:	comp.os.msdos.djgpp
Date:	Thu, 21 Jul 2016 10:55:06 -0700 (PDT)
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Subject:	LD from binutils 2.26 crashes when -ffunction-sections +
	-Wl,--gc-sections is used but only under DOS
From:	"RayeR (glaux AT centrum DOT cz) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
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I usually run DJGPP from WinXP on my main PC so it took me some time to hit this bug. I compiled one of my project under DOS where I use -ffunction-sections + -Wl,--gc-sections options in Makefile to reduce size of binary trashing unused code and after compiling all objects linker has crashed:

gcc  -O2 -Wall -Wstrict-prototypes -ffunction-sections	-o SMB.EXE unisysio.o pc
i.o ide.o smart.o isadev.o smbus.o smbdev.o spd.o smb.o -Wl,--gc-sections	
Exiting due to signal SIGSEGV							
Page fault at eip=0006154f, error=0004						
eax=00000001 ebx=0026f3a8 ecx=0026f328 edx=00000000 esi=002cead0 edi=002ce038	
ebp=000f875c esp=0017a670 program=e:/djgpp/bin/ld.exe				
cs: sel=01a7  base=00a10000  limit=0045ffff					
ds: sel=01af  base=00a10000  limit=0045ffff					
es: sel=01af  base=00a10000  limit=0045ffff					
fs: sel=018f  base=0005f180  limit=0000ffff					
gs: sel=01bf  base=00000000  limit=0010ffff					
ss: sel=01af  base=00a10000  limit=0045ffff					
App stack: [0017a9f8..000fa9fc]  Exceptn stack: [000fa948..000f8a08]		
										
Call frame traceback EIPs:							
  0x0006154f									
collect2.exe: error: ld returned 255 exit status				
makefile:55: recipe for target 'SMB.EXE' failed 				
make.exe: *** [SMB.EXE] Error 1          

and produced EXE was empty (zero Bytes). I tried on different PC and with/without XMS manager, DOS 6.22 and 7.1 but still crashes. Under Dosbox too. But when I run it under Win98SE or WinXP it compiles fine and EXE is valid. So I tried some older linker and found that LD.EXE from binutils 2.25 dated 1.6.2015 and some olders that I tried don't crash. So it was introduced recenlty in 2.26.
I also tried to tune stack size in stub to 1M but didn't help. Any idea? Are there archived some older versions between 2.26 from 4.3.2016 and 2.25 from 1.6.2015?

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