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[sancov] Fix unspecified constructor order between sancov and asan.

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Sanitizer coverage constructor must run after asan constructor (for each DSO).
Bump constructor priority to guarantee that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227195 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evgeniy Stepanov 2015-01-27 15:01:22 +00:00
parent 145de00800
commit 0b2455c374
2 changed files with 5 additions and 1 deletions
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2
lib/Transforms/Instrumentation/SanitizerCoverage.cpp
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@ -59,7 +59,7 @@ static const char *const kSanCovIndirCallName = "__sanitizer_cov_indir_call16";
static const char *const kSanCovTraceEnter = "__sanitizer_cov_trace_func_enter";
static const char *const kSanCovTraceBB = "__sanitizer_cov_trace_basic_block";
static const char *const kSanCovModuleCtorName = "sancov.module_ctor";
static const uint64_t kSanCtorAndDtorPriority = 1;
static const uint64_t kSanCtorAndDtorPriority = 2;
static cl::opt<int> ClCoverageLevel("sanitizer-coverage-level",
cl::desc("Sanitizer Coverage. 0: none, 1: entry block, 2: all blocks, "

4
test/Instrumentation/SanitizerCoverage/coverage.ll
View File

@ -29,6 +29,10 @@ entry:
ret void
}
; CHECK0-NOT: @llvm.global_ctors = {{.*}}{ i32 2, void ()* @sancov.module_ctor }
; CHECK1: @llvm.global_ctors = {{.*}}{ i32 2, void ()* @sancov.module_ctor }
; CHECK2: @llvm.global_ctors = {{.*}}{ i32 2, void ()* @sancov.module_ctor }
; CHECK0-NOT: call void @__sanitizer_cov(
; CHECK0-NOT: call void @__sanitizer_cov_module_init(