test: Add a testcase for setjmp

Dockerfile.dev

@@ -46,7 +46,7 @@ ENV PATH=$TOOLCHAIN_PREFIX/bin:$PATH
 COPY test/*.c ./test/
 RUN cd test && \
     for arch in $TOOLCHAIN_ARCHS; do \
-        for test in hello hello-tls crt-test; do \
+        for test in hello hello-tls crt-test setjmp; do \
             $arch-w64-mingw32-clang $test.c -o $test-$arch.exe || exit 1; \
         done; \
     done

run-tests.sh

@@ -12,7 +12,7 @@ export PATH=$PREFIX/bin:$PATH
 : ${ARCHS:=${TOOLCHAIN_ARCHS-i686 x86_64 armv7 aarch64}}
 
 cd test
-TESTS_C="hello hello-tls crt-test"
+TESTS_C="hello hello-tls crt-test setjmp"
 TESTS_C_NO_BUILTIN="crt-test"
 TESTS_CPP="hello-cpp hello-exception"
 for arch in $ARCHS; do

test/setjmp.c

@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2018 Martin Storsjo
+ *
+ * This file is part of llvm-mingw.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <setjmp.h>
+#include <stdlib.h>
+#include <math.h>
+
+jmp_buf jmp;
+
+int fibonacci(int val) {
+    char buf[100];
+    if (val <= 1) {
+        longjmp(jmp, 1);
+        return val;
+    }
+    snprintf(buf, sizeof(buf), "fibonacci(%d)", val);
+    printf("%s\n", buf);
+    return fibonacci(val - 1) + fibonacci(val - 2);
+}
+
+double check_d, check_cos;
+
+int main(int argc, char* argv[]) {
+    int val = 10, ret;
+    double val2 = 3.14;
+    if (argc > 1)
+        val = atoi(argv[1]);
+    if (argc > 2)
+        val2 = atof(argv[2]);
+    double d = sin(val2);
+    printf("d = %f\n", d);
+    printf("cos = %f\n", cos(val2));
+    printf("size = %d, %p\n", (int) sizeof(jmp), jmp);
+    check_d = d;
+    check_cos = cos(val2);
+    if ((ret = setjmp(jmp)) != 0) {
+        printf("setjmp returned %d\n", ret);
+        printf("d = %f\n", d);
+        printf("cos = %f\n", cos(val2));
+        if (d != check_d || cos(val2) != check_cos) {
+            printf("local variables were clobbered\n");
+            return 1;
+        }
+        return 0;
+    }
+    printf("fibonacci(%d) = %d\n", val, fibonacci(val));
+    return 1;
+}