[Mingw-users] gcc and stack unwinding

[Edward D. <eld...@tr...>]

I was having problems with the MingW gcc-4.5.2 implementation and some 
Boost regression tests when someone suggested I try a gcc-4.5.2 
implementation from TDM-GCC. After trying that version my regression 
testing problems went away, for what reason I do not know. When I looked 
to compare the two versions I noticed the MingW version has 
'libgcc_s_dw2-1.dll' while the TDM version has 'libgcc_s_sjlj-1.dll'. I 
believed these have something to do with the stack, and maybe stack 
unwinding as well as cross-DLL exceptions but I could not find any 
explanation in the gcc 4.5.2 docs although I thought I saw something 
there about it previously.

Can anyone tell me what these different DLLs are and where in the gcc 
docs I can find information about them ?