runtime: make gsignal stack at least SIGSTKSZ bytes

    The default stack size for the gsignal goroutine, 32K, is not enough on
    ia64.  Make sure that the stack size is at least SIGSTKSZ.

    Reviewed-on: https://go-review.googlesource.com/28224

From-SVN: r239894

diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index 633dfcfdd8aae3f3bc1073147b11ad4ae98a9dc6..71a9f5bcd5e74f4b673d23e140fe8f2d7a9c3ab8 100644 (file)
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-394486a1cec9bbb81216311ed153179d9fe1c2c5
+c8cf90f2daf62428ca6aa0b5674572cd99f25fe3
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.

diff --git a/libgo/runtime/runtime.c b/libgo/runtime/runtime.c
index c7d33bcef4c65a170c343ebfc2bb13b52327c37b..9abd096555d2a6cdaf7b37a65fa72aa76efddd8e 100644 (file)
--- a/libgo/runtime/runtime.c
+++ b/libgo/runtime/runtime.c
@@ -272,7 +272,14 @@ runtime_tickspersecond(void)
 void
 runtime_mpreinit(M *mp)
 {
-       mp->gsignal = runtime_malg(32*1024, (byte**)&mp->gsignalstack, &mp->gsignalstacksize);  // OS X wants >=8K, Linux >=2K
+       int32 stacksize = 32 * 1024;    // OS X wants >=8K, Linux >=2K
+
+#ifdef SIGSTKSZ
+       if(stacksize < SIGSTKSZ)
+               stacksize = SIGSTKSZ;
+#endif
+
+       mp->gsignal = runtime_malg(stacksize, (byte**)&mp->gsignalstack, &mp->gsignalstacksize);
        mp->gsignal->m = mp;
 }