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/* { dg-options "-O" } */
#include "gcc-plugin.h"
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "stringpool.h"
#include "toplev.h"
#include "basic-block.h"
#include "hash-table.h"
#include "vec.h"
#include "ggc.h"
#include "basic-block.h"
#include "tree-ssa-alias.h"
#include "internal-fn.h"
#include "gimple.h"
#include "gimple-iterator.h"
#include "gimple-fold.h"
#include "tree-eh.h"
#include "gimple-expr.h"
#include "is-a.h"
#include "tree.h"
#include "tree-pass.h"
#include "intl.h"
#include "plugin-version.h"
#include "c-family/c-common.h"
#include "diagnostic.h"
#include "context.h"
int plugin_is_GPL_compatible;
/* A custom pass for injecting a crash in the middle-end when compiling
certain functions. */
const pass_data pass_data_crash_test =
{
GIMPLE_PASS, /* type */
"crash_test", /* name */
OPTGROUP_NONE, /* optinfo_flags */
TV_NONE, /* tv_id */
PROP_ssa, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
0, /* todo_flags_finish */
};
class pass_crash_test : public gimple_opt_pass
{
public:
pass_crash_test(gcc::context *ctxt)
: gimple_opt_pass(pass_data_crash_test, ctxt)
{}
/* opt_pass methods: */
bool gate (function *) final override { return true; }
unsigned int execute (function *) final override;
}; // class pass_test_groups
/* Determine if STMT is a call to a function named FUNCNAME.
If so, return STMT as a gcall *. Otherwise return NULL. */
static gcall *
check_for_named_call (gimple *stmt, const char *funcname)
{
gcc_assert (funcname);
gcall *call = dyn_cast <gcall *> (stmt);
if (!call)
return NULL;
tree fndecl = gimple_call_fndecl (call);
if (!fndecl)
return NULL;
if (strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), funcname))
return NULL;
return call;
}
unsigned int
pass_crash_test::execute (function *fun)
{
gimple_stmt_iterator gsi;
basic_block bb;
FOR_EACH_BB_FN (bb, fun)
for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
{
gimple *stmt = gsi_stmt (gsi);
if (gcall *call = check_for_named_call (stmt, "inject_ice"))
{
input_location = stmt->location;
internal_error ("I'm sorry Dave, I'm afraid I can't do that");
}
if (gcall *call = check_for_named_call (stmt,
"inject_write_through_null"))
{
input_location = stmt->location;
int *p = NULL;
*p = 42;
}
}
return 0;
}
/* Entrypoint for the plugin.
Create and register the custom pass. */
int
plugin_init (struct plugin_name_args *plugin_info,
struct plugin_gcc_version *version)
{
struct register_pass_info pass_info;
const char *plugin_name = plugin_info->base_name;
int argc = plugin_info->argc;
struct plugin_argument *argv = plugin_info->argv;
if (!plugin_default_version_check (version, &gcc_version))
return 1;
pass_info.pass = new pass_crash_test (g);
pass_info.reference_pass_name = "*warn_function_noreturn";
pass_info.ref_pass_instance_number = 1;
pass_info.pos_op = PASS_POS_INSERT_AFTER;
register_callback (plugin_name, PLUGIN_PASS_MANAGER_SETUP, NULL,
&pass_info);
return 0;
}
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