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-rw-r--r--contrib/compiler-rt/lib/builtins/ctzdi2.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/contrib/compiler-rt/lib/builtins/ctzdi2.c b/contrib/compiler-rt/lib/builtins/ctzdi2.c
index db3c6fdc08f1..eecde29718d7 100644
--- a/contrib/compiler-rt/lib/builtins/ctzdi2.c
+++ b/contrib/compiler-rt/lib/builtins/ctzdi2.c
@@ -16,6 +16,12 @@
/* Returns: the number of trailing 0-bits */
+#if !defined(__clang__) && (defined(__sparc64__) || defined(__mips64) || defined(__riscv__))
+/* gcc resolves __builtin_ctz -> __ctzdi2 leading to infinite recursion */
+#define __builtin_ctz(a) __ctzsi2(a)
+extern si_int __ctzsi2(si_int);
+#endif
+
/* Precondition: a != 0 */
COMPILER_RT_ABI si_int