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| author | Sandra Loosemore <sandra@codesourcery.com> | 2019-11-20 19:10:40 -0700 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2019-11-26 19:18:23 +0100 |
| commit | c72e5cd87dcb075782f9b6beea024b984f2e1130 (patch) | |
| tree | 5775f299eaf17d56b80ff23f1a92e6f45925265a /argp | |
| parent | cc0e0b097c3e2176b51c32c09a76766e890cd2d4 (diff) | |
| download | glibc-c72e5cd87dcb075782f9b6beea024b984f2e1130.tar glibc-c72e5cd87dcb075782f9b6beea024b984f2e1130.tar.gz glibc-c72e5cd87dcb075782f9b6beea024b984f2e1130.tar.bz2 glibc-c72e5cd87dcb075782f9b6beea024b984f2e1130.zip | |
Compile elf/rtld.c with -fno-tree-loop-distribute-patterns.
In GCC 10, the default at -O2 is now -ftree-loop-distribute-patterns.
This optimization causes GCC to "helpfully" convert the hand-written
loop in _dl_start into a call to memset, which is not available that
early in program startup. Similar problems in other places in GLIBC
have been addressed by explicitly building with
-fno-tree-loop-distribute-patterns, but this one may have been
overlooked previously because it only affects targets where
HAVE_BUILTIN_MEMSET is not defined.
This patch fixes a bug observed on nios2-linux-gnu target that caused
all programs to segv on startup.
Diffstat (limited to 'argp')
0 files changed, 0 insertions, 0 deletions