re PR libmudflap/28578 (A most simple multithreaded program (practically any multithreaded one) causes mudflap violation)

2006-11-10  Frank Ch. Eigler  <fche@redhat.com>

	PR libmudflap/28578
	* mf-hooks1.c (__mf_0fn_malloc): Make the bootstrap buffers
	static but not function scope static.
	(free): Skip deallocation attempts for objects placed into
	bootstrap buffers.
	* testsuite/libmudflap.cth/pass59-frag.c: New test.


M    libmudflap/mf-hooks1.c
M    libmudflap/ChangeLog
A    libmudflap/testsuite/libmudflap.cth/pass59-frag.c

From-SVN: r118662

1 files changed, 39 insertions, 0 deletions

diff --git a/libmudflap/testsuite/libmudflap.cth/pass59-frag.c b/libmudflap/testsuite/libmudflap.cth/pass59-frag.c
new file mode 100644
index 0000000..bf6c293
--- /dev/null
+++ b/libmudflap/testsuite/libmudflap.cth/pass59-frag.c
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <pthread.h>
+
+/* PR 28578 */
+
+void* test_thread(void* arg)
+{
+  printf("Hello from thread!\n");
+  pthread_exit(NULL);
+  return 0;
+}
+
+int main()
+{
+  pthread_t thread;
+  int arg = 0;
+  pthread_create(&thread, NULL, test_thread, (void*)arg);
+  pthread_join(thread, NULL);
+  pthread_exit(NULL);
+  return 0;
+}
+
+/* { dg-output "Hello from thread!\n" } */
+
+#if 0
+
+/* Even this test case replicates the problem.  However, when built in
+   static mode, it blows up during __mf_init (?!?!?!) with a
+   pthread_mutex_lock deadlock error. */
+
+#include <stdio.h>
+#include <pthread.h>
+
+int main ()
+{
+      pthread_exit(NULL);
+      return 0;
+}
+#endif