csparser: abstract out insignificant information

... from -Wanalyzer-use-of-uninitialized-value reports

Reported-by: Justin Stephenson
Closes: #34

Author: kdudka

src/csfilter.cc

@@ -110,6 +110,12 @@ MsgFilter::MsgFilter():
     // unify (per build random) names of temporary variables
     d->addMsgFilter("COMPILER_WARNING", "_tmp[0-9]+_", "_tmp_");
 
+    // abstract out <Uf260> vs. <U4260> in:
+    // "use of uninitialized value 'table_key.<Uf260>.str'"
+    d->addMsgFilter("GCC_ANALYZER",
+            "^(use of uninitialized value '[^'<]+\\.<)[^>]+(>.[^']+)'",
+            "\\1XXX\\2");
+
     // auxiliary info provided by valgrind directly in the key event message
     d->addMsgFilter("VALGRIND_WARNING",
             " lost in loss record [0-9,]+ of [0-9,]+$", "");

tests/csdiff/CMakeLists.txt

@@ -77,5 +77,6 @@ test_csdiff(diff-misc 09-shellcheck-raw)
 test_csdiff(diff-misc 10-pylint-copr)
 test_csdiff(diff-misc 11-pylint-copr-json)
 test_csdiff(diff-misc 12-shellcheck-sc222x)
+test_csdiff(diff-misc 13-gcca-filt)
 
 add_subdirectory(filter-file)

tests/csdiff/diff-misc/13-gcca-filt-add-z.err

@@ -0,0 +1,10 @@
+Error: GCC_ANALYZER_WARNING (CWE-457):
+sssd-2.6.3/src/lib/sifp/sss_sifp_parser.c: scope_hint: In function 'sss_sifp_parse_dict'
+sssd-2.6.3/src/lib/sifp/sss_sifp_parser.c:233:18: warning[-Wanalyzer-use-of-uninitialized-value]: use of uninitialized value 'table_key.<U4260>.str'
+sssd-2.6.3/src/lib/sifp/sss_sifp_parser.c:461:5: note: in expansion of macro 'check_dbus_arg'
+sssd-2.6.3/src/lib/sifp/sss_sifp_parser.c:147:5: note: in expansion of macro 'check_dbus_arg'
+#  231|   
+#  232|   done:
+#  233|->     if (table_key.str != NULL) {
+#  234|           _free(ctx, table_key.str);
+#  235|       }

tests/csdiff/diff-misc/13-gcca-filt-add.err

@@ -0,0 +1,10 @@
+Error: GCC_ANALYZER_WARNING (CWE-457):
+sssd-test_build_base_srpm_225/src/lib/sifp/sss_sifp_parser.c: scope_hint: In function 'sss_sifp_parse_dict'
+sssd-test_build_base_srpm_225/src/lib/sifp/sss_sifp_parser.c:233:18: warning[-Wanalyzer-use-of-uninitialized-value]: use of uninitialized value 'table_key.<Uf260>.str'
+sssd-test_build_base_srpm_225/src/lib/sifp/sss_sifp_parser.c:461:5: note: in expansion of macro 'check_dbus_arg'
+sssd-test_build_base_srpm_225/src/lib/sifp/sss_sifp_parser.c:147:5: note: in expansion of macro 'check_dbus_arg'
+#  231|   
+#  232|   done:
+#  233|->     if (table_key.str != NULL) {
+#  234|           _free(ctx, table_key.str);
+#  235|       }