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3 Commits

Author SHA1 Message Date
Ivan Lozano
c044f5bce8 rust: Update libfuzzer flags for rust_fuzz 
libfuzzer-sys uses different flags in the 0.4.0 update, so update the
flags for rust_fuzz modules to align.

Test: m <example_fuzzer>
Change-Id: I0a1eb140a7843fdaf5266c05a1ecf6d3964e0f5e
 2021-04-02 12:43:28 -04:00
Tri Vo
7af79fb49b Remove "-C link-dead-code=y" flag 
sysroot no longer builds with this flag.

LLVM ERROR: Cannot select: 0x7f7c39be9b48: v8i8 = AArch64ISD::VSLI 0x7f7c39696120, 0x7f7c39693fc8, 0x7f7c39d86528, prebuilts/rust/linux-x86/1.50.0/src/stdlibs/library/core/src/../../stdarch/crates/core_arch/src/aarch64/neon/mod.rs:2324:5
  0x7f7c39696120: v8i8,ch = CopyFromReg 0x7f7c420b1c98, Register:v8i8 %13, prebuilts/rust/linux-x86/1.50.0/src/stdlibs/library/core/src/../../stdarch/crates/core_arch/src/aarch64/neon/mod.rs:2324:5
    0x7f7c39be90e8: v8i8 = Register %13
  0x7f7c39693fc8: v8i8,ch = load<(dereferenceable load 8 from %ir.b)> 0x7f7c420b1c98, 0x7f7c39694510, undef:i64, prebuilts/rust/linux-x86/1.50.0/src/stdlibs/library/core/src/../../stdarch/crates/core_arch/src/aarch64/neon/mod.rs:2324:19
    0x7f7c39694510: i64,ch = CopyFromReg 0x7f7c420b1c98, Register:i64 %17, prebuilts/rust/linux-x86/1.50.0/src/stdlibs/library/core/src/../../stdarch/crates/core_arch/src/aarch64/neon/mod.rs:2324:19
      0x7f7c39be52d8: i64 = Register %17
    0x7f7c39bea230: i64 = undef
  0x7f7c39d86528: i32,ch = CopyFromReg 0x7f7c420b1c98, Register:i32 %18, prebuilts/rust/linux-x86/1.50.0/src/stdlibs/library/core/src/../../stdarch/crates/core_arch/src/aarch64/neon/mod.rs:2324:5
    0x7f7c39be5ea0: i32 = Register %18
In function: _RNvNtNtNtCsfOHkQPwunBC_4core9core_arch7aarch644neon9vsli_n_s8B7_
11:40:52 ninja failed with: exit status 1

Bug: 147140513
Test: build/run local rust_fuzz executable with asan+sancov.
Change-Id: I00c81f25f562bb9f18169a199eaf95ebeb7dbbe6
 2021-03-17 18:00:28 -07:00
Ivan Lozano
6cd99e6ab4 Add Rust fuzzing support. 
Add a rust_fuzz module which builds a libfuzzer binary that enabes
asan+sancov. This relies on the libfuzzer-sys crate.

Bug: 147140513
Test: Local rust_fuzz example builds, fuzzes with asan+sancov.
Change-Id: I57db3b8d25869791824ccfab768d13b0bb9d42fa
 2021-01-25 11:11:10 -05:00