Mingw build using dwarf2 exceptions?!!!
I installed Qt 4.6.3 libraries (mingw build) from Qt web site.
As I understand they are compiled to use dwarf 2 exceptions instead of sjlj exceptions. However, dwarf 2 exceptions are not portable under windows. Will the exception mechanism be changed in the future releases?
1 reply
Qt has no direct influence on that. The choice of throwing dwarf exceptions is made at MinGW:
From their release notes [sourceforge.net]
4. NEW FEATURES SINCE MINGW GCC 3.4Windows-specific:—
[…]
- Zero cost exceptions: New exception model Dwarf only has performance penalty when being thrown. The old model, SJLJ, is no longer available.
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