analyzer: fix ICE on va_copy [PR107349]

gcc/analyzer/ChangeLog:
	PR analyzer/107349
	* varargs.cc (get_va_copy_arg): Fix the non-pointer case.

gcc/testsuite/ChangeLog:
	PR analyzer/107349
	* gcc.dg/analyzer/stdarg-1-ms_abi.c (pr107349): New.
	* gcc.dg/analyzer/stdarg-1-sysv_abi.c (pr107349): New.
	* gcc.dg/analyzer/stdarg-1.c (pr107349): New.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

diff --git a/gcc/analyzer/varargs.cc b/gcc/analyzer/varargs.cc
index 20c83dbbadc8bc78d763f9d6ba12046a82ecc3ef..e4dbad79f424bfd9beddad6a7946e0e36b9b5531 100644 (file)
--- a/gcc/analyzer/varargs.cc
+++ b/gcc/analyzer/varargs.cc
@@ -171,9 +171,8 @@ get_va_copy_arg (const region_model *model,
   const svalue *arg_sval = model->get_rvalue (arg, ctxt);
   if (const svalue *cast = arg_sval->maybe_undo_cast ())
     arg_sval = cast;
-  /* Expect a POINTER_TYPE; does it point to an array type?  */
-  gcc_assert (TREE_CODE (TREE_TYPE (arg)) == POINTER_TYPE);
-  if (TREE_CODE (TREE_TYPE (TREE_TYPE (arg))) == ARRAY_TYPE)
+  if (TREE_CODE (TREE_TYPE (arg)) == POINTER_TYPE
+      && TREE_CODE (TREE_TYPE (TREE_TYPE (arg))) == ARRAY_TYPE)
     {
       /* va_list_arg_type_node is a pointer to a va_list;
         return *ARG_SVAL.  */

diff --git a/gcc/testsuite/gcc.dg/analyzer/stdarg-1-ms_abi.c b/gcc/testsuite/gcc.dg/analyzer/stdarg-1-ms_abi.c
index b0143a7d3e3edcdba528d79e9f6aece456bf4d03..e55f10de66be10bb843c7af39f65f5f09c50f85f 100644 (file)
--- a/gcc/testsuite/gcc.dg/analyzer/stdarg-1-ms_abi.c
+++ b/gcc/testsuite/gcc.dg/analyzer/stdarg-1-ms_abi.c
@@ -435,3 +435,9 @@ void test_va_arg_after_return (void)
   __analyzer_called_by_test_va_arg_after_return (42, 1066);
   i = __builtin_va_arg (global_ap, int); /* { dg-warning "dereferencing pointer 'global_ap' to within stale stack frame" } */
 }
+
+void pr107349 (void)
+{
+  __builtin_ms_va_list x,y;
+  __builtin_ms_va_copy(x,y); /* { dg-warning "use of uninitialized value 'y'" } */
+} /* { dg-warning "missing call to 'va_end'" } */

diff --git a/gcc/testsuite/gcc.dg/analyzer/stdarg-1-sysv_abi.c b/gcc/testsuite/gcc.dg/analyzer/stdarg-1-sysv_abi.c
index 1dc97ea3a44e1055fb69e02473c0aa2f69ebd613..fb49b3584e2a2feded19b4ad6822fd05325f89de 100644 (file)
--- a/gcc/testsuite/gcc.dg/analyzer/stdarg-1-sysv_abi.c
+++ b/gcc/testsuite/gcc.dg/analyzer/stdarg-1-sysv_abi.c
@@ -435,3 +435,9 @@ void test_va_arg_after_return (void)
   __analyzer_called_by_test_va_arg_after_return (42, 1066);
   i = __builtin_va_arg (global_ap, int); /* { dg-warning "dereferencing pointer 'global_ap' to within stale stack frame" } */
 }
+
+void pr107349 (void)
+{
+  __builtin_sysv_va_list x,y;
+  __builtin_sysv_va_copy(x,y); /* { dg-warning "use of uninitialized value 'y'" } */
+} /* { dg-warning "missing call to 'va_end'" } */

diff --git a/gcc/testsuite/gcc.dg/analyzer/stdarg-1.c b/gcc/testsuite/gcc.dg/analyzer/stdarg-1.c
index f23d28c5b895ea41f0c8d81d32da52fd471c968a..f2766a505227bac0b8b7d8cc046531c34863f9d6 100644 (file)
--- a/gcc/testsuite/gcc.dg/analyzer/stdarg-1.c
+++ b/gcc/testsuite/gcc.dg/analyzer/stdarg-1.c
@@ -431,3 +431,9 @@ void test_va_arg_after_return (void)
   __analyzer_called_by_test_va_arg_after_return (42, 1066);
   i = __builtin_va_arg (global_ap, int); /* { dg-warning "dereferencing pointer 'global_ap' to within stale stack frame" } */
 }
+
+void pr107349 (void)
+{
+  __builtin_va_list x,y;
+  __builtin_va_copy(x,y); /* { dg-warning "use of uninitialized value 'y'" } */
+} /* { dg-warning "missing call to 'va_end'" } */