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[MSan] Add a test for vararg with lots of non-vararg arguments. 

This is a testcase for http://llvm.org/PR27646, hitting the bug on x86_64,
aarch64, mips.

Differential Revision: http://reviews.llvm.org/D19944

llvm-svn: 268981
This commit is contained in:
Marcin Koscielnicki 2016-05-09 21:53:47 +00:00
parent 0f153424a9
commit a407f543c0
1 changed files with 14 additions and 0 deletions
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14
compiler-rt/lib/msan/tests/msan_test.cc
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@ -2462,6 +2462,20 @@ TEST(MemorySanitizer, VAArgManyTest) {
vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
}
static void vaargsfn_manyfix(int g1, int g2, int g3, int g4, int g5, int g6, int g7, int g8, int g9, ...) {
va_list vl;
va_start(vl, g9);
EXPECT_NOT_POISONED(va_arg(vl, int));
EXPECT_POISONED(va_arg(vl, int));
va_end(vl);
}
TEST(MemorySanitizer, VAArgManyFixTest) {
int* x = GetPoisoned<int>();
int* y = GetPoisoned<int>();
vaargsfn_manyfix(1, *x, 3, 4, 5, 6, 7, 8, 9, 10, *y);
}
static void vaargsfn_pass2(va_list vl) {
EXPECT_NOT_POISONED(va_arg(vl, int));
EXPECT_NOT_POISONED(va_arg(vl, int));