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-rw-r--r--tests/buf/oom.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/tests/buf/oom.c b/tests/buf/oom.c
index b9fd29cbb..16a03cc1a 100644
--- a/tests/buf/oom.c
+++ b/tests/buf/oom.c
@@ -1,10 +1,22 @@
#include "clar_libgit2.h"
#include "buffer.h"
-#if defined(GIT_ARCH_64)
-#define TOOBIG 0xffffffffffffff00
+/*
+ * We want to use some ridiculous size that `malloc` will fail with
+ * but that does not otherwise interfere with testing. On Linux, choose
+ * a number that is large enough to fail immediately but small enough
+ * that valgrind doesn't believe it to erroneously be a negative number.
+ * On macOS, choose a number that is large enough to fail immediately
+ * without having libc print warnings to stderr.
+ */
+#if defined(GIT_ARCH_64) && defined(__linux__)
+# define TOOBIG 0x0fffffffffffffff
+#elif defined(__linux__)
+# define TOOBIG 0x0fffffff
+#elif defined(GIT_ARCH_64)
+# define TOOBIG 0xffffffffffffff00
#else
-#define TOOBIG 0xffffff00
+# define TOOBIG 0xffffff00
#endif
/**