fix #42245, export jl_setjmp on windows

cli/jl_exports.h

@@ -19,24 +19,36 @@ JL_EXPORTED_DATA_SYMBOLS(XX)
 #define XX(name)    JL_DLLEXPORT void name(void);
 typedef void (anonfunc)(void);
 JL_EXPORTED_FUNCS(XX)
+#ifdef _OS_WINDOWS_
+JL_EXPORTED_FUNCS_WIN(XX)
+#endif
 #undef XX
 
 // Define holder locations for function addresses as `const void * $(name)_addr = & $(name);`
 #define XX(name)    JL_HIDDEN anonfunc * name##_addr = (anonfunc*)&name;
 JL_EXPORTED_FUNCS(XX)
+#ifdef _OS_WINDOWS_
+JL_EXPORTED_FUNCS_WIN(XX)
+#endif
 #undef XX
 
 // Generate lists of function names and addresses
 #define XX(name)    #name,
 static const char *const jl_exported_func_names[] = {
     JL_EXPORTED_FUNCS(XX)
+#ifdef _OS_WINDOWS_
+    JL_EXPORTED_FUNCS_WIN(XX)
+#endif
     NULL
 };
 #undef XX
 
 #define XX(name)    &name##_addr,
 static anonfunc **const jl_exported_func_addrs[] = {
     JL_EXPORTED_FUNCS(XX)
+#ifdef _OS_WINDOWS_
+    JL_EXPORTED_FUNCS_WIN(XX)
+#endif
     NULL
 };
 #undef XX

cli/list_strip_symbols.h

@@ -4,4 +4,7 @@
 #include "trampolines/common.h"
 #define XX(x) --strip-symbol=CNAME(x)
 JL_EXPORTED_FUNCS(XX)
+#ifdef _OS_WINDOWS_
+JL_EXPORTED_FUNCS_WIN(XX)
+#endif
 #undef XX

cli/trampolines/common.h

@@ -1,3 +1,5 @@
+#include "../../src/support/platform.h"
+
 // Preprocessor annoyances
 #define CONCAT_(x,y)    x##y
 #define CONCAT(x,y)     CONCAT_(x, y)

cli/trampolines/trampolines_aarch64.S

@@ -12,4 +12,7 @@ CNAME(name)##: SEP \
 .cfi_endproc SEP \
 
 JL_EXPORTED_FUNCS(XX)
+#ifdef _OS_WINDOWS_
+JL_EXPORTED_FUNCS_WIN(XX)
+#endif
 #undef XX

cli/trampolines/trampolines_arm.S

@@ -15,4 +15,7 @@ CONCAT(.L,CNAMEADDR(name))##: ; \
 .cfi_endproc; \
 
 JL_EXPORTED_FUNCS(XX)
+#ifdef _OS_WINDOWS_
+JL_EXPORTED_FUNCS_WIN(XX)
+#endif
 #undef XX

cli/trampolines/trampolines_i686.S

@@ -13,4 +13,7 @@ CNAME(name)##:; \
 EXPORT(name); \
 
 JL_EXPORTED_FUNCS(XX)
+#ifdef _OS_WINDOWS_
+JL_EXPORTED_FUNCS_WIN(XX)
+#endif
 #undef XX

cli/trampolines/trampolines_x86_64.S

@@ -17,4 +17,7 @@ SEH_END(); \
 EXPORT(name); \
 
 JL_EXPORTED_FUNCS(XX)
+#ifdef _OS_WINDOWS_
+JL_EXPORTED_FUNCS_WIN(XX)
+#endif
 #undef XX

src/jl_exported_funcs.inc

@@ -552,3 +552,5 @@
     XX(jl_wakeup_thread) \
     XX(jl_yield) \
 
+#define JL_EXPORTED_FUNCS_WIN(XX) \
+    XX(jl_setjmp)

src/julia.h

@@ -1881,10 +1881,10 @@ JL_DLLEXPORT void jl_restore_excstack(size_t state) JL_NOTSAFEPOINT;
 
 #if defined(_OS_WINDOWS_)
 #if defined(_COMPILER_GCC_)
-int __attribute__ ((__nothrow__,__returns_twice__)) (jl_setjmp)(jmp_buf _Buf);
+JL_DLLEXPORT int __attribute__ ((__nothrow__,__returns_twice__)) (jl_setjmp)(jmp_buf _Buf);
 __declspec(noreturn) __attribute__ ((__nothrow__)) void (jl_longjmp)(jmp_buf _Buf, int _Value);
 #else
-int (jl_setjmp)(jmp_buf _Buf);
+JL_DLLEXPORT int (jl_setjmp)(jmp_buf _Buf);
 void (jl_longjmp)(jmp_buf _Buf, int _Value);
 #endif
 #define jl_setjmp_f jl_setjmp

test/embedding/embedding-test.jl

@@ -20,13 +20,13 @@ end
     close(out.in)
     close(err.in)
     out_task = @async readlines(out)
-    err = read(err, String)
-    @test err == "MethodError: no method matching this_function_has_no_methods()\n"
+    @test readline(err) == "MethodError: no method matching this_function_has_no_methods()"
     @test success(p)
     lines = fetch(out_task)
     @test length(lines) == 10
     @test parse(Float64, lines[1]) ≈ sqrt(2)
     @test lines[8] == "called bar"
     @test lines[9] == "calling new bar"
     @test lines[10] == "      From worker 2:\tTaking over the world..."
+    @test readline(err) == "exception caught from C"
 end

test/embedding/embedding.c

@@ -175,6 +175,13 @@ int main()
         checked_eval_string("f28825()");
     }
 
+    JL_TRY {
+        jl_error("exception thrown");
+    }
+    JL_CATCH {
+        jl_printf(jl_stderr_stream(), "exception caught from C\n");
+    }
+
     int ret = 0;
     jl_atexit_hook(ret);
     return ret;