diff options
Diffstat (limited to 'toolchain/uClibc/uClibc-0.9.31-workaround-GCC-PR32219.patch')
| -rw-r--r-- | toolchain/uClibc/uClibc-0.9.31-workaround-GCC-PR32219.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/toolchain/uClibc/uClibc-0.9.31-workaround-GCC-PR32219.patch b/toolchain/uClibc/uClibc-0.9.31-workaround-GCC-PR32219.patch new file mode 100644 index 000000000..242a5264b --- /dev/null +++ b/toolchain/uClibc/uClibc-0.9.31-workaround-GCC-PR32219.patch @@ -0,0 +1,57 @@ +From 2e53dd645d5348f207cec7f8595969dc566c5a55 Mon Sep 17 00:00:00 2001 +From: Denys Vlasenko <vda.linux@googlemail.com> +Date: Mon, 17 May 2010 15:56:19 +0200 +Subject: [PATCH] workaround GCC PR32219 + +we ended up calling 0 +Fixes bug #1033 + +Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> +Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> +--- + libc/misc/internals/__uClibc_main.c | 15 +++++++++++++-- + 1 files changed, 13 insertions(+), 2 deletions(-) + +diff --git a/libc/misc/internals/__uClibc_main.c b/libc/misc/internals/__uClibc_main.c +index f9e1244..4ee4443 100644 +--- a/libc/misc/internals/__uClibc_main.c ++++ b/libc/misc/internals/__uClibc_main.c +@@ -105,6 +105,17 @@ _pthread_cleanup_pop_restore(struct _pthread_cleanup_buffer *__buffer, + + #endif /* !SHARED */ + ++/* Defeat compiler optimization which assumes function addresses are never NULL */ ++static __always_inline int not_null_ptr(const void *p) ++{ ++ const void *q; ++ __asm__ ("" ++ : "=r" (q) /* output */ ++ : "0" (p) /* input */ ++ ); ++ return q != 0; ++} ++ + /* + * Prototypes. + */ +@@ -254,7 +265,7 @@ void __uClibc_init(void) + + #ifdef __UCLIBC_HAS_LOCALE__ + /* Initialize the global locale structure. */ +- if (likely(_locale_init!=NULL)) ++ if (likely(not_null_ptr(_locale_init))) + _locale_init(); + #endif + +@@ -264,7 +275,7 @@ void __uClibc_init(void) + * Thus we get a nice size savings because the stdio functions + * won't be pulled into the final static binary unless used. + */ +- if (likely(_stdio_init != NULL)) ++ if (likely(not_null_ptr(_stdio_init))) + _stdio_init(); + + } +-- +1.7.1 + |