From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: akihiko.odaki@daynix.com, alex.bennee@linaro.org, qemu-arm@nongnu.org
Subject: [PATCH v4 14/14] linux-user/main: Suppress out-of-range comparison warning for clang
Date: Sun, 30 Jun 2024 12:00:50 -0700	[thread overview]
Message-ID: <20240630190050.160642-15-richard.henderson@linaro.org> (raw)
In-Reply-To: <20240630190050.160642-1-richard.henderson@linaro.org>
For arm32 host and arm64 guest we get
.../main.c:851:32: error: result of comparison of constant 70368744177664 with expression of type 'unsigned long' is always false [-Werror,-Wtautological-constant-out-of-range-compare]
        if (TASK_UNMAPPED_BASE < reserved_va) {
            ~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~
We already disable -Wtype-limits here, for this exact comparison, but
that is not enough for clang.  Disable -Wtautological-compare as well,
which is a superset.  GCC ignores the unknown warning flag.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/main.c | 1 +
 1 file changed, 1 insertion(+)
diff --git a/linux-user/main.c b/linux-user/main.c
index 94c99a1366..7d3cf45fa9 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -843,6 +843,7 @@ int main(int argc, char **argv, char **envp)
      */
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wtype-limits"
+#pragma GCC diagnostic ignored "-Wtautological-compare"
 
     /*
      * Select an initial value for task_unmapped_base that is in range.
-- 
2.34.1
next prev parent reply	other threads:[~2024-06-30 19:04 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-06-30 19:00 [PATCH v4 00/14] test/tcg: Clang build fixes for arm/aarch64 Richard Henderson
2024-06-30 19:00 ` [PATCH v4 01/14] tests/tcg/minilib: Constify digits in print_num Richard Henderson
2024-07-01 12:10   ` Philippe Mathieu-Daudé
2024-06-30 19:00 ` [PATCH v4 02/14] tests/tcg: Adjust variable defintion from cc-option Richard Henderson
2024-06-30 19:00 ` [PATCH v4 03/14] tests/tcg/aarch64: Drop -fno-tree-loop-distribute-patterns Richard Henderson
2024-06-30 19:00 ` [PATCH v4 04/14] tests/tcg/aarch64: Explicitly specify register width Richard Henderson
2024-06-30 19:00 ` [PATCH v4 05/14] tests/tcg/aarch64: Fix irg operand type Richard Henderson
2024-06-30 19:00 ` [PATCH v4 06/14] tests/tcg/aarch64: Do not use x constraint Richard Henderson
2024-06-30 19:00 ` [PATCH v4 07/14] tests/tcg/aarch64: Add -fno-integrated-as for sme Richard Henderson
2024-06-30 19:00 ` [PATCH v4 08/14] tests/tcg/arm: Fix fcvt result messages Richard Henderson
2024-06-30 19:00 ` [PATCH v4 09/14] tests/tcg/arm: Drop -N from LDFLAGS Richard Henderson
2024-06-30 19:00 ` [PATCH v4 10/14] tests/tcg/arm: Use -fno-integrated-as for test-arm-iwmmxt Richard Henderson
2024-06-30 19:00 ` [PATCH v4 11/14] tests/tcg/arm: Manually register allocate half-precision numbers Richard Henderson
2024-06-30 19:00 ` [PATCH v4 12/14] tests/tcg/arm: Use -march and -mfpu for fcvt Richard Henderson
2024-06-30 19:00 ` [PATCH v4 13/14] tests/tcg/arm: Use vmrs/vmsr instead of mcr/mrc Richard Henderson
2024-06-30 19:00 ` Richard Henderson [this message]
2024-07-01 10:40 ` [PATCH v4 00/14] test/tcg: Clang build fixes for arm/aarch64 Akihiko Odaki
2024-07-04 19:55 ` Alex Bennée
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