Fix ICE in tree_inlinable_function_p.

After g:1a2a7096e5e20d736c6138179470b21aa5a74864 we forbid inlining
for a VLA types. What we miss is setting inline_forbidden_reason
variable.

Fixes:

./xgcc -B. -O3 -c /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/pr99122-2.c -Winline

during GIMPLE pass: local-fnsummary
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/pr99122-2.c: In function ‘foo’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/pr99122-2.c:21:1: internal compiler error: Segmentation fault
   21 | }
      | ^
0xe8b2ca crash_signal
	/home/marxin/Programming/gcc/gcc/toplev.c:327
0x1a92733 pp_format(pretty_printer*, text_info*)
	/home/marxin/Programming/gcc/gcc/pretty-print.c:1096
0x1a76b90 diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
	/home/marxin/Programming/gcc/gcc/diagnostic.c:1244
0x1a79994 diagnostic_impl
	/home/marxin/Programming/gcc/gcc/diagnostic.c:1406
0x1a79994 warning(int, char const*, ...)
	/home/marxin/Programming/gcc/gcc/diagnostic.c:1527
0xf1bb16 tree_inlinable_function_p(tree_node*)
	/home/marxin/Programming/gcc/gcc/tree-inline.c:4123
0xc3f1c5 compute_fn_summary(cgraph_node*, bool)
	/home/marxin/Programming/gcc/gcc/ipa-fnsummary.c:3110
0xc3f937 compute_fn_summary_for_current
	/home/marxin/Programming/gcc/gcc/ipa-fnsummary.c:3160
0xc3f937 execute
	/home/marxin/Programming/gcc/gcc/ipa-fnsummary.c:4768

gcc/ChangeLog:

	* tree-inline.c (inline_forbidden_p): Set
	inline_forbidden_reason.

0 files changed, 0 insertions, 0 deletions