https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63590
Bug ID: 63590
Summary: wrong code with -mstringop-strategy=vector_loop
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Created attachment 33755
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33755&action=edit
reduced testcase
Output:
$ gcc -O -mstringop-strategy=vector_loop testcase.c
$ valgrind -q ./a.out
==6236== Jump to the invalid address stated on the next line
==6236== at 0x0: ???
==6236== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==6236==
==6236==
==6236== Process terminating with default action of signal 11 (SIGSEGV)
==6236== Bad permissions for mapped region at address 0x0
==6236== at 0x0: ???
Segmentation fault
The return address is being overwritten while initialising l[].
Tested revisions:
r216420 - fail
4_9 r213788 - fail
4_8 - unrecognized argument in option '-mstringop-strategy=vector_loop'
