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Side by Side Diff: tests_lit/asan_tests/wideloads.ll

Issue 2211733002: Subzero: Improved quality of ASan error messages (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master
Patch Set: Replaced switch statements with table lookups Created 4 years, 4 months ago
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1 ; Test that potentially widened loads to not trigger an error report 1 ; Test that potentially widened loads to not trigger an error report
2 2
3 ; REQUIRES: no_minimal_build 3 ; REQUIRES: no_minimal_build
4 4
5 ; check for wide load exception 5 ; check for wide load exception
6 ; RUN: llvm-as %s -o - | pnacl-freeze > %t.pexe && %S/../../pydir/szbuild.py \ 6 ; RUN: llvm-as %s -o - | pnacl-freeze > %t.pexe && %S/../../pydir/szbuild.py \
7 ; RUN: --fsanitize-address --sz=-allow-externally-defined-symbols \ 7 ; RUN: --fsanitize-address --sz=-allow-externally-defined-symbols \
8 ; RUN: %t.pexe -o %t && %t | FileCheck %s --check-prefix=WIDE --allow-empty 8 ; RUN: %t.pexe -o %t && %t | FileCheck %s --check-prefix=WIDE --allow-empty
9 9
10 ; check for error reporting 10 ; check for error reporting
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26 define internal void @no_wide_load() { 26 define internal void @no_wide_load() {
27 %str = alloca i8, i32 1, align 1 27 %str = alloca i8, i32 1, align 1
28 %straddr = ptrtoint i8* %str to i32 28 %straddr = ptrtoint i8* %str to i32
29 %off1addr = add i32 %straddr, 1 29 %off1addr = add i32 %straddr, 1
30 %off1 = inttoptr i32 %off1addr to i8* 30 %off1 = inttoptr i32 %off1addr to i8*
31 %contents = load i8, i8* %off1, align 1 31 %contents = load i8, i8* %off1, align 1
32 call void @exit(i32 1) 32 call void @exit(i32 1)
33 unreachable 33 unreachable
34 } 34 }
35 35
36 ; WIDE-NOT: Illegal access 36 ; WIDE-NOT: Illegal
37 ; NOWIDE: Illegal access of 1 bytes at 37 ; NOWIDE: Illegal 1 byte load from stack object at
38 38
39 ; use argc to determine which test routine to run 39 ; use argc to determine which test routine to run
40 define void @_start(i32 %arg) { 40 define void @_start(i32 %arg) {
41 %argcaddr = add i32 %arg, 8 41 %argcaddr = add i32 %arg, 8
42 %argcptr = inttoptr i32 %argcaddr to i32* 42 %argcptr = inttoptr i32 %argcaddr to i32*
43 %argc = load i32, i32* %argcptr, align 1 43 %argc = load i32, i32* %argcptr, align 1
44 switch i32 %argc, label %error [i32 1, label %wide_load 44 switch i32 %argc, label %error [i32 1, label %wide_load
45 i32 2, label %no_wide_load] 45 i32 2, label %no_wide_load]
46 wide_load: 46 wide_load:
47 call void @wide_load() 47 call void @wide_load()
48 br label %error 48 br label %error
49 no_wide_load: 49 no_wide_load:
50 call void @no_wide_load() 50 call void @no_wide_load()
51 br label %error 51 br label %error
52 error: 52 error:
53 call void @exit(i32 1) 53 call void @exit(i32 1)
54 unreachable 54 unreachable
55 } 55 }
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