On Sun, 31 Aug 2025, Pali Rohár wrote:
UCRT has _setjmp and _setjmpex function symbols in DLL libs prefixed by the
__intrinsic keyword. Add symbol aliases without this prefix which allows to
call _setjmp and _setjmpex without the prefix also for UCRT builds and so
allows to unify header files for msvcrt vs UCRT builds.
Aliases in crt-aliases.def.in are used for libucrtbase.a and libucrtbased.a
import libraries. Aliases in api-ms-win-crt-private-l1-1-0.def.in are used
for libucrt.a import library. And aliases in setjmp.S are used for
libucrtapp.a import library.
---
mingw-w64-crt/def-include/crt-aliases.def.in | 5 +++++
.../lib-common/api-ms-win-crt-private-l1-1-0.def.in | 2 ++
mingw-w64-crt/misc/setjmp.S | 10 ++++++++++
3 files changed, 17 insertions(+)
In general, I prefer to align the general use with what UCRT does, and add
this kind of aliases in the msvcr* libraries instead. But in this case, as
the whole field of setjmp functions is a huge mess, I agree that it might
be easiest to align the headers towards a more common base, and redirect
_setjmp to __intrinsic_setjmp in the import library instead.
So patch ok, but noting that this isn't our usual approach.
// Martin
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