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[lsan] Test to show lsan dependency on globals 

This test from @MaskRay comment on D69428. The patch is looking to
break this behavior. If we go with D69428 I hope we will have some
workaround for this test or include explicit test update into the patch.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D100906
This commit is contained in:
Vitaly Buka 2021-04-20 15:56:27 -07:00
parent eff4f65afb
commit 5e9e463e1f
1 changed files with 39 additions and 0 deletions
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39
compiler-rt/test/lsan/TestCases/use_globals_unused.cpp Normal file
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// Test that unused globals are included in the root set.
// RUN: %clangxx_lsan -O2 %s -DTEST_LIB -c -o %t.o
// RUN: %clangxx_lsan -O2 %s %t.o -o %t
// RUN: LSAN_BASE="use_stacks=0:use_registers=0"
// RUN: %env_lsan_opts=$LSAN_BASE:"use_globals=0" not %run %t 2>&1 | FileCheck %s --check-prefixes=LEAK
// RUN: %env_lsan_opts=$LSAN_BASE:"use_globals=1" %run %t 2>&1 | FileCheck %s --implicit-check-not=leak
// RUN: %env_lsan_opts="" %run %t 2>&1 | FileCheck %s --implicit-check-not=leak
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef TEST_LIB
void set(char *a) {
strcpy(a, "hello");
}
#else
static void *g;
void set(char *a);
void foo(void *a) {
// Store from a different function to suppress global localization.
g = a;
}
int main() {
char a[10];
set(a);
char *b = strdup(a);
printf("%p %s\n", b, b);
g = b;
}
#endif
// LEAK: LeakSanitizer: detected memory leaks