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| author | Maxim Ostapenko <m.ostapenko@samsung.com> | 2017-01-13 10:08:50 +0000 |
|---|---|---|
| committer | Maxim Ostapenko <chefmax@gcc.gnu.org> | 2017-01-13 12:08:50 +0200 |
| commit | 0acd830b7e91e5b2d0e20fd0f5770544fd5f16ab (patch) | |
| tree | c21a9aadf4bd45797940ed35147ffa12bdaab8f0 | |
| parent | 582dbb53ac6d0bd46c1402584d2c4be0a34a040b (diff) | |
| download | gcc-0acd830b7e91e5b2d0e20fd0f5770544fd5f16ab.zip gcc-0acd830b7e91e5b2d0e20fd0f5770544fd5f16ab.tar.gz gcc-0acd830b7e91e5b2d0e20fd0f5770544fd5f16ab.tar.bz2 | |
re PR sanitizer/78887 (Failure to build aarch64 allmodconfig Linux kernel 4.9)
PR sanitizer/78887
* asan.c (asan_needs_odr_indicator_p): Don't emit ODR indicators
if -fsanitize=kernel-address is present.
From-SVN: r244402
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/asan.c | 11 |
2 files changed, 16 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d79749e..7aebebc 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2017-01-13 Maxim Ostapenko <m.ostapenko@samsung.com> + + PR sanitizer/78887 + * asan.c (asan_needs_odr_indicator_p): Don't emit ODR indicators + if -fsanitize=kernel-address is present. + 2017-01-13 Richard Biener <rguenther@suse.de> * tree-pretty-print.c (dump_generic_node): Dump INTEGER_CSTs @@ -2360,7 +2360,16 @@ create_odr_indicator (tree decl, tree type) static bool asan_needs_odr_indicator_p (tree decl) { - return !DECL_ARTIFICIAL (decl) && !DECL_WEAK (decl) && TREE_PUBLIC (decl); + /* Don't emit ODR indicators for kernel because: + a) Kernel is written in C thus doesn't need ODR indicators. + b) Some kernel code may have assumptions about symbols containing specific + patterns in their names. Since ODR indicators contain original names + of symbols they are emitted for, these assumptions would be broken for + ODR indicator symbols. */ + return (!(flag_sanitize & SANITIZE_KERNEL_ADDRESS) + && !DECL_ARTIFICIAL (decl) + && !DECL_WEAK (decl) + && TREE_PUBLIC (decl)); } /* Append description of a single global DECL into vector V. |