9a0237011b
This makes suppression list to work similar to __lsan_ignore_object.
Existing behavior was inconsistent and very inconvenient for complex
data structures.
Example:
struct B;
struct A { B* ptr; };
A* t = makeA();
t->ptr = makeB();
Before the patch: if makeA suppressed by suppression file, lsan will
still report the makeB() leak, so we need two suppressions.
After the patch: a single makeA suppression is enough (the same as a
single __lsan_ignore_object(t)).
Differential Revision: https://reviews.llvm.org/D93884
43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
// RUN: LSAN_BASE="use_registers=0:use_stacks=0"
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// RUN: %clangxx_lsan %s -o %t
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// RUN: rm -f %t.supp
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// RUN: touch %t.supp
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// RUN: %push_to_device %t.supp %device_rundir/%t.supp
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// RUN: %env_lsan_opts="$LSAN_BASE:suppressions='%device_rundir/%t.supp'" not %run %t 2>&1 | FileCheck %s --check-prefix=NOSUPP
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// RUN: echo "leak:*LSanTestLeakingFunc*" > %t.supp
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// RUN: %push_to_device %t.supp %device_rundir/%t.supp
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// RUN: %env_lsan_opts="$LSAN_BASE:suppressions='%device_rundir/%t.supp'" not %run %t 2>&1 | FileCheck %s
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//
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// RUN: echo "leak:%t" > %t.supp
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// RUN: %push_to_device %t.supp %device_rundir/%t.supp
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// RUN: %env_lsan_opts="$LSAN_BASE:suppressions='%device_rundir/%t.supp':symbolize=false" %run %t
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#include <stdio.h>
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#include <stdlib.h>
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void *LSanTestLeakingFunc() {
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void *p = malloc(666);
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fprintf(stderr, "Test alloc: %p.\n", p);
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return p;
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}
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void LSanTestUnsuppressedLeakingFunc() {
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void **p = (void **)LSanTestLeakingFunc();
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*p = malloc(777);
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fprintf(stderr, "Test alloc: %p.\n", *p);
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}
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int main() {
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LSanTestUnsuppressedLeakingFunc();
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void *q = malloc(1337);
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fprintf(stderr, "Test alloc: %p.\n", q);
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return 0;
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}
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// CHECK: Suppressions used:
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// CHECK: 1 666 *LSanTestLeakingFunc*
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// CHECK: SUMMARY: {{(Leak|Address)}}Sanitizer: 1337 byte(s) leaked in 1 allocation(s)
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// NOSUPP: SUMMARY: {{(Leak|Address)}}Sanitizer: 2780 byte(s) leaked in 3 allocation(s).
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