X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/68bc51237bef4844fb9955a775e99a6555b3ad8e..bf36dda959b02bcbcd7a14274dd0cd223fc6af32:/acmacro/context.m4

diff --git a/acmacro/context.m4 b/acmacro/context.m4
index aa21ee1b7a..604457e3f2 100644
--- a/acmacro/context.m4
+++ b/acmacro/context.m4
@@ -1,7 +1,7 @@
 dnl AC_CHECK_UCONTEXT: Check whether ucontext are working
 
 dnl Most of the code is stolen from the GNU pth autoconf macros by
-dnl Ralf S. Engelschall. As 
+dnl Ralf S. Engelschall. 
 dnl # ``"Reuse an expert's code" is the right
 dnl #   advice for most people. But it's a useless
 dnl #   advice for the experts writing the code
@@ -136,10 +136,10 @@ ucontext_t uc_main;
 
 void child(void *arg)
 {
-    if (arg != (void *)12345)
+    if (arg != (void *)2147483648)
         exit(1);
     if (swapcontext(&uc_child, &uc_main) != 0)
-        exit(1);
+        exit(2);
 }
 
 int main(int argc, char *argv[])
@@ -149,28 +149,28 @@ int main(int argc, char *argv[])
 
     /* the default is that it fails */
     if ((fp = fopen("conftestval", "w")) == NULL)
-        exit(1);
+        exit(3);
     fprintf(fp, "no\n");
     fclose(fp);
 
     /* configure a child user-space context */
     if ((stack = malloc(64*1024)) == NULL)
-        exit(1);
+        exit(4);
     if (getcontext(&uc_child) != 0)
-        exit(1);
+        exit(5);
     uc_child.uc_link = NULL;
     uc_child.uc_stack.ss_sp = (char *)stack+(32*1024);
     uc_child.uc_stack.ss_size = 32*1024;
     uc_child.uc_stack.ss_flags = 0;
-    makecontext(&uc_child, child, 2, (void *)12345);
+    makecontext(&uc_child, child, 2, (void *)2147483648);
 
     /* switch into the user context */
     if (swapcontext(&uc_main, &uc_child) != 0)
-        exit(1);
+        exit(6);
 
     /* Fine, child came home */
     if ((fp = fopen("conftestval", "w")) == NULL)
-        exit(1);
+        exit(7);
     fprintf(fp, "yes\n");
     fclose(fp);