PR debug/49951 - jumpy stepping at end of scope in C++

gcc/cp/

	PR debug/49951
	* decl.c (cxx_maybe_build_cleanup): Don't set location of the call
	to the destructor.

gcc/testsuite/

	PR debug/49951
	* g++.dg/gcov/gcov-2.C: Adjust.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@182532 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 6fbd652..0e570f8 100644 (file)
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2011-12-20  Dodji Seketeli  <dodji@redhat.com>
+
+       PR debug/49951
+       * decl.c (cxx_maybe_build_cleanup): Don't set location of the call
+       to the destructor.
+
 2011-12-20  Paolo Carlini  <paolo.carlini@oracle.com>
 
        PR c++/51612

diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 0a43fb8..2fc794b 100644 (file)
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -13805,8 +13805,17 @@ cxx_maybe_build_cleanup (tree decl, tsubst_flags_t complain)
        cleanup = call;
     }
 
+  /* build_delete sets the location of the destructor call to the
+     current location, even though the destructor is going to be
+     called later, at the end of the current scope.  This can lead to
+     a "jumpy" behaviour for users of debuggers when they step around
+     the end of the block.  So let's unset the location of the
+     destructor call instead.  */
+  if (cleanup != NULL && EXPR_P (cleanup))
+    SET_EXPR_LOCATION (cleanup, UNKNOWN_LOCATION);
   return cleanup;
 }
+
 \f
 /* When a stmt has been parsed, this function is called.  */
 

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index f6eb1d1..0f947a9 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2011-12-20  Dodji Seketeli  <dodji@redhat.com>
+
+       PR debug/49951
+       * g++.dg/gcov/gcov-2.C: Adjust.
+
 2011-12-20  Paolo Carlini  <paolo.carlini@oracle.com>
 
        PR c++/51612

diff --git a/gcc/testsuite/g++.dg/gcov/gcov-2.C b/gcc/testsuite/g++.dg/gcov/gcov-2.C
index 6d002f5..66d8af3 100644 (file)
--- a/gcc/testsuite/g++.dg/gcov/gcov-2.C
+++ b/gcc/testsuite/g++.dg/gcov/gcov-2.C
@@ -20,7 +20,7 @@ private:
 
 void foo()
 {
-  C c;                                 /* count(2) */
+  C c;                                 /* count(1) */
   c.seti (1);                          /* count(1) */
 }