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| author | H.J. Lu <hjl.tools@gmail.com> | 2020-07-16 07:03:27 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2020-07-27 04:40:13 -0700 |
| commit | c4c22e830251e1961c6ebec78d28d039eb2e6017 (patch) | |
| tree | c8ca64121d22d1d3222b58e85fc477bd68166c6a /gcc/expr.c | |
| parent | fd5966e8e044785f51cd7373b59ad9575a5ac96c (diff) | |
| download | gcc-c4c22e830251e1961c6ebec78d28d039eb2e6017.zip gcc-c4c22e830251e1961c6ebec78d28d039eb2e6017.tar.gz gcc-c4c22e830251e1961c6ebec78d28d039eb2e6017.tar.bz2 | |
LTO: Add -fcf-protection=check
Mixing -fcf-protection and -fcf-protection=none objects are allowed.
Linker just merges -fcf-protection values from all input objects.
Add -fcf-protection=check for the final link with LTO. An error is
issued if LTO object files are compiled with different -fcf-protection
values. Otherwise, -fcf-protection=check is ignored at the compile
time. Without explicit -fcf-protection at link time, -fcf-protection
values from LTO object files are merged at the final link.
gcc/
PR bootstrap/96203
* common.opt: Add -fcf-protection=check.
* flag-types.h (cf_protection_level): Add CF_CHECK.
* lto-wrapper.c (merge_and_complain): Issue an error for
mismatching -fcf-protection values with -fcf-protection=check.
Otherwise, merge -fcf-protection values.
* doc/invoke.texi: Document -fcf-protection=check.
gcc/testsuite/
PR bootstrap/96203
* gcc.target/i386/pr96203-1.c: New test.
* gcc.target/i386/pr96203-2.c: Likewise.
Diffstat (limited to 'gcc/expr.c')
0 files changed, 0 insertions, 0 deletions