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Compiler warnings on string comparisons in _testcapi#109469

@iritkatriel

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@iritkatriel
./Modules/_testcapimodule.c:226:18: warning: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Wstring-compare] assert(v != UNINITIALIZED_PTR); ^ ~~~~~~~~~~~~~~~~~ /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/assert.h:99:25: note: expanded from macro 'assert' (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __ASSERT_FILE_NAME, __LINE__, #e) : (void)0) ^ ./Modules/_testcapimodule.c:238:14: warning: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Wstring-compare] assert(k == UNINITIALIZED_PTR); ^ ~~~~~~~~~~~~~~~~~ /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/assert.h:99:25: note: expanded from macro 'assert' (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __ASSERT_FILE_NAME, __LINE__, #e) : (void)0) ^ ./Modules/_testcapimodule.c:239:14: warning: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Wstring-compare] assert(v == UNINITIALIZED_PTR); ^ ~~~~~~~~~~~~~~~~~ /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/assert.h:99:25: note: expanded from macro 'assert' (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __ASSERT_FILE_NAME, __LINE__, #e) : (void)0) ^ 4 warnings generated. ./Modules/_testcapi/dict.c:289:16: warning: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Wstring-compare] assert(key == UNINITIALIZED_PTR); ^ ~~~~~~~~~~~~~~~~~ /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/assert.h:99:25: note: expanded from macro 'assert' (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __ASSERT_FILE_NAME, __LINE__, #e) : (void)0) ^ ./Modules/_testcapi/dict.c:290:18: warning: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Wstring-compare] assert(value == UNINITIALIZED_PTR); ^ ~~~~~~~~~~~~~~~~~ /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/assert.h:99:25: note: expanded from macro 'assert' (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __ASSERT_FILE_NAME, __LINE__, #e) : (void)0) ^ 2 warnings generated. ./Modules/_testcapi/exceptions.c:129:17: warning: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Wstring-compare] assert(type != UNINITIALIZED_PTR); ^ ~~~~~~~~~~~~~~~~~ /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/assert.h:99:25: note: expanded from macro 'assert' (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __ASSERT_FILE_NAME, __LINE__, #e) : (void)0) ^ ./Modules/_testcapi/exceptions.c:130:18: warning: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Wstring-compare] assert(value != UNINITIALIZED_PTR); ^ ~~~~~~~~~~~~~~~~~ /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/assert.h:99:25: note: expanded from macro 'assert' (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __ASSERT_FILE_NAME, __LINE__, #e) : (void)0) ^ ./Modules/_testcapi/exceptions.c:131:15: warning: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Wstring-compare] assert(tb != UNINITIALIZED_PTR); ^ ~~~~~~~~~~~~~~~~~ /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/assert.h:99:25: note: expanded from macro 'assert' (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __ASSERT_FILE_NAME, __LINE__, #e) : (void)0) 

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    buildThe build process and cross-buildextension-modulesC modules in the Modules dirtestsTests in the Lib/test dir

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