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analyzer: fix ICE on untracked decl_regions [PR106374] 

gcc/analyzer/ChangeLog:
	PR analyzer/106374
	* region.cc (decl_region::get_svalue_for_initializer): Bail out on
	untracked regions.

gcc/testsuite/ChangeLog:
	PR analyzer/106374
	* gcc.dg/analyzer/untracked-2.c: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
This commit is contained in:
David Malcolm 2022-07-20 21:34:03 -04:00
parent e7dfd87445
commit a6c192e80a
2 changed files with 12 additions and 0 deletions
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5
gcc/analyzer/region.cc
View File

@ -1152,6 +1152,11 @@ decl_region::get_svalue_for_initializer (region_model_manager *mgr) const
if (binding->symbolic_p ())
return NULL;
/* If we don't care about tracking the content of this region, then
it's unused, and the value doesn't matter. */
if (!tracked_p ())
return NULL;
binding_cluster c (this);
c.zero_fill_region (mgr->get_store_manager (), this);
return mgr->get_or_create_compound_svalue (TREE_TYPE (m_decl),

7
gcc/testsuite/gcc.dg/analyzer/untracked-2.c Normal file
View File

@ -0,0 +1,7 @@
typedef unsigned char u8;
extern int foo(const u8 *key, unsigned int keylen);
int test (void)
{
static const u8 default_salt[64];
return foo(default_salt, 64);
}