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| author | David Malcolm <dmalcolm@redhat.com> | 2022-11-22 17:29:21 -0500 |
|---|---|---|
| committer | David Malcolm <dmalcolm@redhat.com> | 2022-11-22 17:29:21 -0500 |
| commit | 7c9717fcb5cf94ce1e7ef5c903058adf9980ff28 (patch) | |
| tree | 9e72e9f6a5423412cd7714ee825fa2ad68c6fae1 /gcc/analyzer | |
| parent | 6bd31b33daa3c7635d886ff2cebd915748db2084 (diff) | |
| download | gcc-7c9717fcb5cf94ce1e7ef5c903058adf9980ff28.zip gcc-7c9717fcb5cf94ce1e7ef5c903058adf9980ff28.tar.gz gcc-7c9717fcb5cf94ce1e7ef5c903058adf9980ff28.tar.bz2 | |
analyzer: fix 'errno' on Solaris and OS X [PR107807]
gcc/analyzer/ChangeLog:
PR analyzer/107807
* region-model-impl-calls.cc (register_known_functions): Register
"___errno" and "__error" as synonyms for "__errno_location".
gcc/testsuite/ChangeLog:
PR analyzer/107807
* gcc.dg/analyzer/errno-___errno.c: New test.
* gcc.dg/analyzer/errno-__error.c: New test.
* gcc.dg/analyzer/errno-global-var.c: New test.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
Diffstat (limited to 'gcc/analyzer')
| -rw-r--r-- | gcc/analyzer/region-model-impl-calls.cc | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/analyzer/region-model-impl-calls.cc b/gcc/analyzer/region-model-impl-calls.cc index 6962ffd..23a21d7 100644 --- a/gcc/analyzer/region-model-impl-calls.cc +++ b/gcc/analyzer/region-model-impl-calls.cc @@ -1953,6 +1953,20 @@ register_known_functions (known_function_manager &kfm) kfm.add ("error_at_line", make_unique<kf_error> (5)); } + /* Other implementations of C standard library. */ + { + /* According to PR 107807 comment #2, Solaris implements "errno" + like this: + extern int *___errno(void) __attribute__((__const__)); + #define errno (*(___errno())) + and OS X like this: + extern int * __error(void); + #define errno (*__error()) + Add these as synonyms for "__errno_location". */ + kfm.add ("___errno", make_unique<kf_errno_location> ()); + kfm.add ("__error", make_unique<kf_errno_location> ()); + } + /* C++ support functions. */ { kfm.add ("operator new", make_unique<kf_operator_new> ()); |