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From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Xen-devel <xen-devel@lists.xenproject.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
	Jan Beulich <JBeulich@suse.com>
Subject: [PATCH 5/7] xen/efi: Make efi_start() compile at -Og
Date: Mon, 19 Apr 2021 15:01:30 +0100	[thread overview]
Message-ID: <20210419140132.16909-6-andrew.cooper3@citrix.com> (raw)
In-Reply-To: <20210419140132.16909-1-andrew.cooper3@citrix.com>

When compiling at -Og:

  boot.c: In function 'efi_start':
  boot.c:1339:9: error: 'argc' may be used uninitialized in this function [-Werror=maybe-uninitialized]
   1339 |         efi_arch_handle_cmdline(argc ? *argv : NULL, options, name.s);
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

although this appears to be limited to the ARM build only.  It also seems to
be bogus, because it is immediately preceding by a read of argc which doesn't
yield a diagnostic.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
CC: Jan Beulich <JBeulich@suse.com>
---
 xen/common/efi/boot.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/common/efi/boot.c b/xen/common/efi/boot.c
index 63e289ab85..f1e7a5267c 100644
--- a/xen/common/efi/boot.c
+++ b/xen/common/efi/boot.c
@@ -1126,7 +1126,7 @@ efi_start(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable)
     static EFI_GUID __initdata shim_lock_guid = SHIM_LOCK_PROTOCOL_GUID;
     EFI_LOADED_IMAGE *loaded_image;
     EFI_STATUS status;
-    unsigned int i, argc;
+    unsigned int i, argc = 0;
     CHAR16 **argv, *file_name, *cfg_file_name = NULL, *options = NULL;
     UINTN gop_mode = ~0;
     EFI_SHIM_LOCK_PROTOCOL *shim_lock;
-- 
2.11.0



  parent reply	other threads:[~2021-04-19 14:02 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-19 14:01 [PATCH 0/7] xen: Switch to using -Og for debug builds Andrew Cooper
2021-04-19 14:01 ` [PATCH 1/7] xen/arm: Make make_cpus_node() compile at -Og Andrew Cooper
2021-04-22 18:20   ` Julien Grall
2021-04-19 14:01 ` [PATCH 2/7] x86/shim: Fix compilation " Andrew Cooper
2021-04-19 14:01 ` [PATCH 3/7] x86/sysctl: Make arch_do_sysctl() compile " Andrew Cooper
2021-04-19 14:01 ` [PATCH 4/7] x86/irq: Make create_irq() " Andrew Cooper
2021-04-19 14:01 ` Andrew Cooper [this message]
2021-04-19 14:01 ` [PATCH 6/7] x86/shadow: Make _shadow_prealloc() " Andrew Cooper
2021-04-22  7:52   ` Tim Deegan
2021-04-19 14:01 ` [PATCH 7/7] xen: Use -Og for debug builds when available Andrew Cooper
2021-04-19 15:45 ` [PATCH 0/7] xen: Switch to using -Og for debug builds Jan Beulich
2021-04-21  9:31   ` Andrew Cooper
2021-04-21  9:51     ` Jan Beulich

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