https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92817
Bug ID: 92817
Summary: the prototype of the built-in __gcov_exit function is
wrong
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: gcov-profile
Assignee: unassigned at gcc dot gnu.org
Reporter: pageexec at gmail dot com
CC: marxin at gcc dot gnu.org
Target Milestone: ---
git commit db46bcd377f4b4a26b9807a7cb3565a161178660 (since gcc 7) introduced
the callout to "void __gcov_exit(void)" however its construction looks like
this:
build_gcov_exit_decl (void)
{
tree init_fn = build_function_type_list (void_type_node, void_type_node,
NULL);
instead it should be this:
build_gcov_exit_decl (void)
{
tree init_fn = build_function_type_list (void_type_node, NULL);
as it is, the builtin-in prototype does not match what one would define in
source code and this trips up type based control-flow integrity checks.
