Dear all,
Now ecl compiles without threads support under win32. Here is what I did:
1. After I took a closer look I found that the real problem is "ERROR" IS
defined, so I added #undef ERROR in the "no threads" branch and compiled it
again. Now there was only one error building ecl-min.exe
cinit.obj : error LNK2019: unresolved external symbol __ecl_w32_exception_filter
@4 referenced in function _si_simple_toplevel
2. After a bit code reading, I found that cinit.c includes stack.h's try/catch
macros, which is defined as:
#if defined(_MSC_VER)
# define ECL_CATCH_ALL_BEGIN(the_env) do { \
const cl_env_ptr __the_env = (the_env); \
_try { \
const cl_env_ptr __the_env = (the_env); \
if (ecl_frs_push(__the_env,ECL_PROTECT_TAG) == 0) {
# define ECL_CATCH_ALL_IF_CAUGHT } else {
# define ECL_CATCH_ALL_END }} \
_except(_ecl_w32_exception_filter(GetExceptionInformation())) \
{ (void)0; } \
ecl_frs_pop(__the_env); } while(0)
...
However, _ecl_w32_exception_filter is defined in unixint.c like this:
#ifdef ECL_WINDOWS_THREADS
static LPTOP_LEVEL_EXCEPTION_FILTER old_W32_exception_filter = NULL;
LONG WINAPI
_ecl_w32_exception_filter(struct _EXCEPTION_POINTERS* ep)
{
...
So no wonder it isn't defined. Since my goal is to support emscripten, there is
no need to implement a fake _ecl_w32_exception_filter, so I just changed the
_exception(...) part into _except(1) and then ecl.exe was produced.
I've played around a bit and didn't find anything wrong. Ctrl-C also works: it
terminates the program normally without crash. That means the win32 crash bug
(Issue 8) may be related to _ecl_w32_exception_filter.
Any thoughts about this?
- Rujia------------------------------------------------------------------------------
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