* [PATCH] libiberty: Don't use VLAs if __STDC_NO_VLA__ is non-zero
@ 2019-05-30 20:54 Michael Forney
2019-05-31 18:46 ` Jeff Law
0 siblings, 1 reply; 2+ messages in thread
From: Michael Forney @ 2019-05-30 20:54 UTC (permalink / raw)
To: gcc-patches
VLAs are optional in C11, and an implementation that does not support
them will define __STDC_NO_VLA__ to 1.
2019-05-30 Michael Forney <mforney@mforney.org>
* cp-demangle.c: Don't define CP_DYNAMIC_ARRAYS if __STDC_NO_VLA__
is non-zero.
---
libiberty/cp-demangle.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libiberty/cp-demangle.c b/libiberty/cp-demangle.c
index 4e5b733b548..aa78c86dd44 100644
--- a/libiberty/cp-demangle.c
+++ b/libiberty/cp-demangle.c
@@ -192,9 +192,9 @@ static void d_init_info (const char *, int, size_t, struct d_info *);
#else
#ifdef __STDC__
#ifdef __STDC_VERSION__
-#if __STDC_VERSION__ >= 199901L
+#if __STDC_VERSION__ >= 199901L && !__STDC_NO_VLA__
#define CP_DYNAMIC_ARRAYS
-#endif /* __STDC__VERSION >= 199901L */
+#endif /* __STDC_VERSION__ >= 199901L && !__STDC_NO_VLA__ */
#endif /* defined (__STDC_VERSION__) */
#endif /* defined (__STDC__) */
#endif /* ! defined (__GNUC__) */
--
2.20.1
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] libiberty: Don't use VLAs if __STDC_NO_VLA__ is non-zero
2019-05-30 20:54 [PATCH] libiberty: Don't use VLAs if __STDC_NO_VLA__ is non-zero Michael Forney
@ 2019-05-31 18:46 ` Jeff Law
0 siblings, 0 replies; 2+ messages in thread
From: Jeff Law @ 2019-05-31 18:46 UTC (permalink / raw)
To: Michael Forney, gcc-patches
On 5/30/19 2:50 PM, Michael Forney wrote:
> VLAs are optional in C11, and an implementation that does not support
> them will define __STDC_NO_VLA__ to 1.
>
> 2019-05-30 Michael Forney <mforney@mforney.org>
>
> * cp-demangle.c: Don't define CP_DYNAMIC_ARRAYS if __STDC_NO_VLA__
> is non-zero.
THanks. I've installed this on the trunk. Though I must admit some
surprise, what compiler are you using that defines STDC_NO_VLA? :-)
jeff
^ permalink raw reply [flat|nested] 2+ messages in thread
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