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* [gcc r13-6403] analyzer: Support errno for newlib
@ 2023-03-02 1:13 Hans-Peter Nilsson
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From: Hans-Peter Nilsson @ 2023-03-02 1:13 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:8590e4d096e4636c9384f7f885b979026861c29f
commit r13-6403-g8590e4d096e4636c9384f7f885b979026861c29f
Author: Hans-Peter Nilsson <hp@axis.com>
Date: Wed Mar 1 03:54:03 2023 +0100
analyzer: Support errno for newlib
Without this definition, the errno definition for newlib
isn't recognized as such, and these tests fail for newlib
targets:
FAIL: gcc.dg/analyzer/call-summaries-errno.c (test for warnings, line 16)
FAIL: gcc.dg/analyzer/call-summaries-errno.c (test for excess errors)
FAIL: gcc.dg/analyzer/errno-1.c (test for warnings, line 20)
FAIL: gcc.dg/analyzer/errno-1.c (test for excess errors)
FAIL: gcc.dg/analyzer/flex-without-call-summaries.c (test for excess errors)
FAIL: gcc.dg/analyzer/isatty-1.c (test for warnings, line 31)
FAIL: gcc.dg/analyzer/isatty-1.c (test for warnings, line 35)
FAIL: gcc.dg/analyzer/isatty-1.c (test for warnings, line 46)
FAIL: gcc.dg/analyzer/isatty-1.c (test for warnings, line 56)
FAIL: gcc.dg/analyzer/isatty-1.c (test for excess errors)
gcc/analyzer:
* kf.cc (register_known_functions): Add __errno function for newlib.
Diff:
---
gcc/analyzer/kf.cc | 2 ++
1 file changed, 2 insertions(+)
diff --git a/gcc/analyzer/kf.cc b/gcc/analyzer/kf.cc
index 3a91b6bd6eb..ed5f70398e1 100644
--- a/gcc/analyzer/kf.cc
+++ b/gcc/analyzer/kf.cc
@@ -1033,9 +1033,11 @@ register_known_functions (known_function_manager &kfm)
and OS X like this:
extern int * __error(void);
#define errno (*__error())
+ and similarly __errno for newlib.
Add these as synonyms for "__errno_location". */
kfm.add ("___errno", make_unique<kf_errno_location> ());
kfm.add ("__error", make_unique<kf_errno_location> ());
+ kfm.add ("__errno", make_unique<kf_errno_location> ());
}
/* Language-specific support functions. */
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