Jiri Slaby
a2658acfe8
OBS-URL: https://build.opensuse.org/package/show/devel:tools:statica/klee?expand=0&rev=24
43 lines
1.3 KiB
Diff
43 lines
1.3 KiB
Diff
From: Jiri Slaby <jirislaby@gmail.com>
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Date: Fri, 17 Mar 2017 13:15:18 +0100
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Subject: errno: define __errno_location
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Patch-mainline: no
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POSIX runtime library is built on my system with a reference to
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__errno_location(). And then it is undefined when klee is run
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--with-posix:
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KLEE: NOTE: Using model: lib/libkleeRuntimePOSIX.bca
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KLEE: output directory is "test/Runtime/POSIX/Output/Read1.c.tmp.klee-out"
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KLEE: Using STP solver backend
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KLEE: WARNING: undefined reference to function: __errno_location
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KLEE: WARNING ONCE: calling external: __errno_location()
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KLEE: ERROR: (location information missing) ASSERTION FAIL: x == -1 && errno == EFAULT
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KLEE: NOTE: now ignoring this error at this location
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EXITING ON ERROR:
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Error: ASSERTION FAIL: x == -1 && errno == EFAULT
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Stack:
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#000000170 in main (argc=4, argv=24928704)
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Therefore, the tests fail.
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Define __errno_location as a weak symbol to return the actual int errno.
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Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
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---
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runtime/POSIX/errno_location.c | 9 +++++++++
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1 file changed, 9 insertions(+)
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create mode 100644 runtime/POSIX/errno_location.c
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--- /dev/null
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+++ b/runtime/POSIX/errno_location.c
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@@ -0,0 +1,9 @@
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+#include <errno.h>
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+
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+#undef errno
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+int errno __attribute__((weak));
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+
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+int __attribute__((weak)) *__errno_location(void)
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+{
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+ return &errno;
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+}
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