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* [gcc r12-7868] analyzer: fix ICE with incorrect lookup of cgraph node [PR105074]
@ 2022-03-29 0:41 David Malcolm
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From: David Malcolm @ 2022-03-29 0:41 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:1203e8f7880c9751ece5f5302e413b20f4608a00
commit r12-7868-g1203e8f7880c9751ece5f5302e413b20f4608a00
Author: David Malcolm <dmalcolm@redhat.com>
Date: Mon Mar 28 20:40:16 2022 -0400
analyzer: fix ICE with incorrect lookup of cgraph node [PR105074]
gcc/analyzer/ChangeLog:
PR analyzer/105074
* region.cc (ipa_ref_requires_tracking): Drop "context_fndecl",
instead using the ref->referring to get the cgraph node of the
caller.
(symnode_requires_tracking_p): Likewise.
gcc/testsuite/ChangeLog:
PR analyzer/105074
* gcc.dg/analyzer/pr105074.c: New test.
* gcc.dg/analyzer/untracked-1.c (extern_fn_char_ptr): New decl.
(test_13): New.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
Diff:
---
gcc/analyzer/region.cc | 13 +++++++------
gcc/testsuite/gcc.dg/analyzer/pr105074.c | 9 +++++++++
gcc/testsuite/gcc.dg/analyzer/untracked-1.c | 6 ++++++
3 files changed, 22 insertions(+), 6 deletions(-)
diff --git a/gcc/analyzer/region.cc b/gcc/analyzer/region.cc
index 9c9e043c658..749e6182b06 100644
--- a/gcc/analyzer/region.cc
+++ b/gcc/analyzer/region.cc
@@ -1168,11 +1168,10 @@ decl_region::get_svalue_for_initializer (region_model_manager *mgr) const
}
/* Subroutine of symnode_requires_tracking_p; return true if REF
- within CONTEXT_FNDECL might imply that we should be tracking the
- value of a decl. */
+ might imply that we should be tracking the value of its decl. */
static bool
-ipa_ref_requires_tracking (const ipa_ref *ref, tree context_fndecl)
+ipa_ref_requires_tracking (ipa_ref *ref)
{
/* If we have a load/store/alias of the symbol, then we'll track
the decl's value. */
@@ -1188,8 +1187,10 @@ ipa_ref_requires_tracking (const ipa_ref *ref, tree context_fndecl)
return true;
case GIMPLE_CALL:
{
- cgraph_node *context_cnode = cgraph_node::get (context_fndecl);
- cgraph_edge *edge = context_cnode->get_edge (ref->stmt);
+ cgraph_node *caller_cnode = dyn_cast <cgraph_node *> (ref->referring);
+ if (caller_cnode == NULL)
+ return true;
+ cgraph_edge *edge = caller_cnode->get_edge (ref->stmt);
if (!edge)
return true;
if (edge->callee == NULL)
@@ -1232,7 +1233,7 @@ symnode_requires_tracking_p (symtab_node *symnode)
if (TREE_CODE (context_fndecl) != FUNCTION_DECL)
return true;
for (auto ref : symnode->ref_list.referring)
- if (ipa_ref_requires_tracking (ref, context_fndecl))
+ if (ipa_ref_requires_tracking (ref))
return true;
/* If we get here, then we don't have uses of this decl that require
diff --git a/gcc/testsuite/gcc.dg/analyzer/pr105074.c b/gcc/testsuite/gcc.dg/analyzer/pr105074.c
new file mode 100644
index 00000000000..2735854d79a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/pr105074.c
@@ -0,0 +1,9 @@
+/* { dg-additional-options "-O2 -fdump-analyzer-untracked" } */
+
+void _gnutls_log(const char *);
+static void _gnutls_ocsp_verify_mandatory_stapling(void) {
+ _gnutls_log(__func__); /* { dg-warning "track '__func__': no" } */
+}
+void check_ocsp_response_gnutls_x509_cert_verify_peers(void) {
+ _gnutls_ocsp_verify_mandatory_stapling();
+}
diff --git a/gcc/testsuite/gcc.dg/analyzer/untracked-1.c b/gcc/testsuite/gcc.dg/analyzer/untracked-1.c
index b7536c399fd..d07c2975670 100644
--- a/gcc/testsuite/gcc.dg/analyzer/untracked-1.c
+++ b/gcc/testsuite/gcc.dg/analyzer/untracked-1.c
@@ -11,6 +11,7 @@ typedef struct boxed_int { int value; } boxed_int;
extern void extern_fn (struct st *);
static void __attribute__((noinline)) internal_fn (struct st *) {}
extern int extern_get_int (void);
+extern void extern_fn_char_ptr (const char *);
void test_0 (void)
{
@@ -97,3 +98,8 @@ int test_12 (void (*fnptr) (struct st *))
static struct st s12 = { __FILE__, __LINE__ }; /* { dg-warning "track 's12': yes" } */
fnptr (&s12);
}
+
+void test_13 (void)
+{
+ extern_fn_char_ptr (__func__); /* { dg-warning "track '__func__': no" } */
+}
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