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TheRock/compiler/amd-llvm/llvm/test/Instrumentation/AddressSanitizer/asan-win-dont-instrument-catchpad.ll
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derek.holloway 7502bf64a4
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2026-09-02 16:34:47 -07:00

64 lines
1.7 KiB
LLVM

; RUN: opt < %s -passes=asan -S | FileCheck %s
; CHECK: %ex = alloca i32, align 4
; CHECK: catchpad within %{{.*}} [ptr @"??_R0H@8", i32 0, ptr %ex]
; This test ensures that catch parameters are not instrumented on Windows.
; This file was generated using the following source
;
; ```C++
; #include <exception>
; #include <cstdio>
;
; int main() {
; try {
; throw 1;
; } catch (const int ex) {
; printf("%d\n", ex);
; return -1;
; }
; return 0;
; }
;
; ```
; then running the following sequence of commands
;
; ```
; clang.exe -g0 -O0 -emit-llvm -c main.cpp -o main.bc
; llvm-extract.exe -func=main main.bc -o main_func.bc
; llvm-dis.exe main_func.bc -o main_func_dis.ll
; ```
; and finally manually trimming the resulting `.ll` file to remove
; unnecessary metadata, and manually adding the `sanitize_address` annotation;
; needed for the ASan pass to run.
target triple = "x86_64-pc-windows-msvc"
@"??_R0H@8" = external global ptr
; Function Attrs: sanitize_address
define i32 @main() sanitize_address personality ptr @__CxxFrameHandler3 {
entry:
%ex = alloca i32, align 4
invoke void @throw()
to label %unreachable unwind label %catch.dispatch
catch.dispatch: ; preds = %entry
%0 = catchswitch within none [label %catch] unwind to caller
catch: ; preds = %catch.dispatch
%1 = catchpad within %0 [ptr @"??_R0H@8", i32 0, ptr %ex]
call void @opaque() [ "funclet"(token %1) ]
catchret from %1 to label %return
return: ; preds = %catch
ret i32 0
unreachable: ; preds = %entry
unreachable
}
declare void @throw() noreturn
declare void @opaque()
declare i32 @__CxxFrameHandler3(...)