| /* Generate known_warnings_options.cc from gcc documents. |
| |
| How to run: |
| $ go run generate_known_warnings_list.go > lib/known_warnings_options.h |
| */ |
| package main |
| |
| import ( |
| "fmt" |
| "io/ioutil" |
| "net/http" |
| "os" |
| "regexp" |
| "sort" |
| "strings" |
| ) |
| |
| const GnuDocumentUrl = "https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html" |
| const ClangDocumentUrl = "https://clang.llvm.org/docs/DiagnosticsReference.html" |
| |
| // Already known warnings. These warnings will be merged. |
| var knownWarnings = []string{ |
| "", |
| "address", |
| "aggregate-return", |
| "aligned-new", |
| "all", |
| "alloc-size-larger-than=", |
| "alloc-zero", |
| "alloca", |
| "alloca-larger-than=", |
| "array-bounds", |
| "array-bounds=", |
| "attribute-alias", |
| "bad-function-cast", |
| "bool-compare", |
| "bool-operation", |
| "c++-compat", |
| "c++11-compat", |
| "c++11-narrowing", |
| "c++14-compat", |
| "c++17-compat", |
| "c90-c99-compat", |
| "c99-c11-compat", |
| "cast-align", |
| "cast-align=", |
| "cast-qual", |
| "catch-value", |
| "catch-value=", |
| "char-subscripts", |
| "chkp", |
| "clobbered", |
| "comment", |
| "comments", |
| "conditionally-supported", |
| "conversion", |
| "covered-switch-default", |
| "dangling-else", |
| "date-time", |
| "declaration-after-statement", |
| "delete-incomplete", |
| "delete-non-virtual-dtor", |
| "deprecated", |
| "disabled-optimization", |
| "double-promotion", |
| "duplicate-decl-specifier", |
| "duplicated-branches", |
| "duplicated-cond", |
| "effc++", |
| "empty-body", |
| "endif-labels", |
| "enum-compare", |
| "error", |
| "error-implicit-function-declaration", |
| "error=", |
| "everything", |
| "exit-time-destructors", |
| "expansion-to-defined", |
| "extra", |
| "extra-semi", |
| "fallthrough", |
| "fatal-errors", |
| "float-conversion", |
| "float-equal", |
| "format", |
| "format-nonliteral", |
| "format-overflow", |
| "format-overflow=", |
| "format-security", |
| "format-signedness", |
| "format-truncation", |
| "format-truncation=", |
| "format-y2k", |
| "format=", |
| "frame-address", |
| "frame-larger-than", |
| "frame-larger-than=", |
| "global-constructors", |
| "header-hygiene", |
| "hsa", |
| "if-not-aligned", |
| "ignored-attributes", |
| "ignored-qualifiers", |
| "implicit", |
| "implicit-fallthrough", |
| "implicit-fallthrough=", |
| "implicit-function-declaration", |
| "implicit-int", |
| "inconsistent-missing-override", |
| "init-self", |
| "inline", |
| "int-in-bool-context", |
| "int-to-void-pointer-cast", |
| "invalid-memory-model", |
| "invalid-pch", |
| "jump-misses-init", |
| "larger-than=", |
| "logical-not-parentheses", |
| "logical-op", |
| "long-long", |
| "main", |
| "maybe-uninitialized", |
| "memset-elt-size", |
| "memset-transposed-args", |
| "misleading-indentation", |
| "missing-braces", |
| "missing-declarations", |
| "missing-field-initializers", |
| "missing-format-attribute", |
| "missing-include-dirs", |
| "missing-noreturn", |
| "missing-parameter-type", |
| "missing-prototypes", |
| "multistatement-macros", |
| "nested-externs", |
| "no-#pragma-messages", |
| "no-#warnings", |
| "no-abi", |
| "no-absolute-value", |
| "no-abstract-vbase-init", |
| "no-address-of-packed-member", |
| "no-aggressive-loop-optimizations", |
| "no-array-bounds", |
| "no-attributes", |
| "no-backend-plugin", |
| "no-bitfield-width", |
| "no-bool-conversion", |
| "no-builtin-declaration-mismatch", |
| "no-builtin-macro-redefined", |
| "no-builtin-requires-header", |
| "no-c++11-compat", |
| "no-c++11-extensions", |
| "no-c++11-narrowing", |
| "no-c++98-compat", |
| "no-c++98-compat-pedantic", |
| "no-c99-extensions", |
| "no-cast-align", |
| "no-cast-qual", |
| "no-char-subscripts", |
| "no-comment", |
| "no-conditional-uninitialized", |
| "no-constant-conversion", |
| "no-constant-logical-operand", |
| "no-conversion", |
| "no-conversion-null", |
| "no-coverage-mismatch", |
| "no-covered-switch-default", |
| "no-cpp", |
| "no-dangling-else", |
| "no-delete-incomplete", |
| "no-delete-non-virtual-dtor", |
| "no-deprecated", |
| "no-deprecated-declarations", |
| "no-deprecated-register", |
| "no-designated-init", |
| "no-disabled-macro-expansion", |
| "no-discarded-array-qualifiers", |
| "no-discarded-qualifiers", |
| "no-div-by-zero", |
| "no-documentation", |
| "no-documentation-unknown-command", |
| "no-double-promotion", |
| "no-duplicate-decl-specifier", |
| "no-empty-body", |
| "no-endif-labels", |
| "no-enum-compare", |
| "no-enum-compare-switch", |
| "no-enum-conversion", |
| "no-error", |
| "no-error-sometimes-uninitialized", |
| "no-error-unused", |
| "no-error=", |
| "no-exit-time-destructors", |
| "no-expansion-to-defined", |
| "no-extern-c-compat", |
| "no-extern-initializer", |
| "no-extra", |
| "no-extra-tokens", |
| "no-float-conversion", |
| "no-float-equal", |
| "no-for-loop-analysis", |
| "no-format", |
| "no-format-contains-nul", |
| "no-format-extra-args", |
| "no-format-nonliteral", |
| "no-format-pedantic", |
| "no-format-security", |
| "no-format-y2k", |
| "no-format-zero-length", |
| "no-four-char-constants", |
| "no-frame-larger-than", |
| "no-frame-larger-than=", |
| "no-free-nonheap-object", |
| "no-gcc-compat", |
| "no-global-constructors", |
| "no-gnu-anonymous-struct", |
| "no-gnu-designator", |
| "no-gnu-variable-sized-type-not-at-end", |
| "no-gnu-zero-variadic-macro-arguments", |
| "no-header-guard", |
| "no-header-hygiene", |
| "no-ignored-attributes", |
| "no-ignored-qualifiers", |
| "no-implicit-exception-spec-mismatch", |
| "no-implicit-fallthrough", |
| "no-implicit-function-declaration", |
| "no-implicit-int", |
| "no-implicitly-unsigned-literal", |
| "no-import", |
| "no-incompatible-library-redeclaration", |
| "no-incompatible-pointer-types", |
| "no-incompatible-pointer-types-discards-qualifiers", |
| "no-inconsistent-dllimport", |
| "no-inconsistent-missing-override", |
| "no-inherited-variadic-ctor", |
| "no-initializer-overrides", |
| "no-inline-asm", |
| "no-inline-new-delete", |
| "no-int-conversion", |
| "no-int-to-pointer-cast", |
| "no-int-to-void-pointer-cast", |
| "no-invalid-noreturn", |
| "no-invalid-offsetof", |
| "no-knr-promoted-parameter", |
| "no-literal-conversion", |
| "no-logical-not-parentheses", |
| "no-logical-op-parentheses", |
| "no-long-long", |
| "no-macro-redefined", |
| "no-max-unsigned-zero", |
| "no-maybe-uninitialized", |
| "no-microsoft-cast", |
| "no-microsoft-enum-forward-reference", |
| "no-microsoft-extra-qualification", |
| "no-microsoft-goto", |
| "no-microsoft-include", |
| "no-mismatched-tags", |
| "no-missing-braces", |
| "no-missing-field-initializers", |
| "no-missing-noescape", |
| "no-missing-noreturn", |
| "no-missing-prototypes", |
| "no-missing-variable-declarations", |
| "no-multichar", |
| "no-narrowing", |
| "no-nested-anon-types", |
| "no-newline-eof", |
| "no-non-literal-null-conversion", |
| "no-non-pod-varargs", |
| "no-non-virtual-dtor", |
| "no-nonnull", |
| "no-nonportable-include-path", |
| "no-nonportable-system-include-path", |
| "no-null-conversion", |
| "no-null-dereference", |
| "no-null-pointer-arithmetic", |
| "no-nullability-completeness", |
| "no-objc-missing-property-synthesis", |
| "no-odr", |
| "no-old-style-cast", |
| "no-overflow", |
| "no-overloaded-virtual", |
| "no-override-init", |
| "no-padded", |
| "no-parentheses", |
| "no-parentheses-equality", |
| "no-pedantic", |
| "no-pedantic-ms-format", |
| "no-pessimizing-move", |
| "no-pointer-arith", |
| "no-pointer-bool-conversion", |
| "no-pointer-sign", |
| "no-pointer-to-int-cast", |
| "no-pragmas", |
| "no-psabi", |
| "no-reorder", |
| "no-reserved-id-macro", |
| "no-return-local-addr", |
| "no-return-type", |
| "no-scalar-storage-order", |
| "no-self-assign", |
| "no-section", |
| "no-semicolon-before-method-body", |
| "no-sequence-point", |
| "no-shadow", |
| "no-shadow-ivar", |
| "no-shift-count-overflow", |
| "no-shift-negative-value", |
| "no-shift-op-parentheses", |
| "no-shift-overflow", |
| "no-shift-sign-overflow", |
| "no-shorten-64-to-32", |
| "no-sign-compare", |
| "no-sign-conversion", |
| "no-sign-promo", |
| "no-signed-enum-bitfield", |
| "no-sizeof-pointer-memaccess", |
| "no-sometimes-uninitialized", |
| "no-strict-aliasing", |
| "no-strict-overflow", |
| "no-string-conversion", |
| "no-string-plus-int", |
| "no-switch", |
| "no-switch-enum", |
| "no-system-headers", |
| "no-tautological-compare", |
| "no-tautological-constant-compare", |
| "no-tautological-constant-out-of-range-compare", |
| "no-tautological-pointer-compare", |
| "no-tautological-undefined-compare", |
| "no-tautological-unsigned-enum-zero-compare", |
| "no-tautological-unsigned-zero-compare", |
| "no-thread-safety-analysis", |
| "no-thread-safety-negative", |
| "no-trigraphs", |
| "no-type-limits", |
| "no-typedef-redefinition", |
| "no-undeclared-selector", |
| "no-undef", |
| "no-undefined-bool-conversion", |
| "no-undefined-func-template", |
| "no-undefined-var-template", |
| "no-unguarded-availability", |
| "no-uninitialized", |
| "no-unknown-attributes", |
| "no-unknown-pragmas", |
| "no-unknown-warning-option", |
| "no-unnamed-type-template-args", |
| "no-unneeded-internal-declaration", |
| "no-unreachable-code", |
| "no-unreachable-code-break", |
| "no-unreachable-code-return", |
| "no-unused", |
| "no-unused-but-set-variable", |
| "no-unused-command-line-argument", |
| "no-unused-const-variable", |
| "no-unused-function", |
| "no-unused-label", |
| "no-unused-lambda-capture", |
| "no-unused-local-typedef", |
| "no-unused-local-typedefs", |
| "no-unused-macros", |
| "no-unused-member-function", |
| "no-unused-parameter", |
| "no-unused-private-field", |
| "no-unused-result", |
| "no-unused-template", |
| "no-unused-value", |
| "no-unused-variable", |
| "no-used-but-marked-unused", |
| "no-user-defined-warnings", |
| "no-varargs", |
| "no-variadic-macros", |
| "no-virtual-move-assign", |
| "no-visibility", |
| "no-vla", |
| "no-weak-vtables", |
| "no-writable-strings", |
| "no-write-strings", |
| "no-zero-as-null-pointer-constant", |
| "no-zero-length-array", |
| "non-virtual-dtor", |
| "nonnull", |
| "nonnull-compare", |
| "normalized=", |
| "null-dereference", |
| "objc-missing-property-synthesis", |
| "old-style-cast", |
| "old-style-declaration", |
| "old-style-definition", |
| "openmp-simd", |
| "overlength-strings", |
| "overloaded-virtual", |
| "override-init", |
| "override-init-side-effects", |
| "packed", |
| "packed-bitfield-compat", |
| "packed-not-aligned", |
| "padded", |
| "parentheses", |
| "partial-availability", |
| "pedantic", |
| "placement-new", |
| "placement-new=", |
| "pointer-arith", |
| "pointer-compare", |
| "pointer-sign", |
| "redundant-decls", |
| "restrict", |
| "return-type", |
| "sequence-point", |
| "shadow", |
| "shadow=", |
| "shift-count-negative", |
| "shift-count-overflow", |
| "shift-negative-value", |
| "shift-overflow", |
| "shift-overflow=", |
| "shorten-64-to-32", |
| "sign-compare", |
| "sign-conversion", |
| "sign-promo", |
| "sized-deallocation", |
| "sizeof-array-argument", |
| "sizeof-pointer-div", |
| "sizeof-pointer-memaccess", |
| "stack-protector", |
| "stack-usage", |
| "stack-usage=", |
| "strict-aliasing", |
| "strict-aliasing=", |
| "strict-overflow", |
| "strict-overflow=", |
| "strict-prototypes", |
| "string-conversion", |
| "stringop-overflow", |
| "stringop-overflow=", |
| "stringop-truncation", |
| "subobject-linkage", |
| "suggest-attribute=", |
| "suggest-final-methods", |
| "suggest-final-types", |
| "suggest-override", |
| "switch", |
| "switch-bool", |
| "switch-default", |
| "switch-enum", |
| "switch-unreachable", |
| "sync-nand", |
| "system-headers", |
| "tautological-compare", |
| "tautological-constant-out-of-range-compare", |
| "tautological-overlap-compare", |
| "tautological-unsigned-zero-compare", |
| "thread-safety", |
| "thread-safety-negative", |
| "traditional", |
| "traditional-conversion", |
| "trampolines", |
| "trigraphs", |
| "type-limits", |
| "undeclared-selector", |
| "undef", |
| "unguarded-availability", |
| "uninitialized", |
| "unknown-pragmas", |
| "unreachable-code", |
| "unreachable-code-break", |
| "unreachable-code-return", |
| "unsafe-loop-optimizations", |
| "unsuffixed-float-constants", |
| "unused", |
| "unused-but-set-parameter", |
| "unused-but-set-variable", |
| "unused-const-variable", |
| "unused-const-variable=", |
| "unused-function", |
| "unused-label", |
| "unused-lambda-capture", |
| "unused-local-typedefs", |
| "unused-macros", |
| "unused-parameter", |
| "unused-value", |
| "unused-variable", |
| "used-but-marked-unused", |
| "useless-cast", |
| "user-defined-warnings", |
| "varargs", |
| "variadic-macros", |
| "vector-operation-performance", |
| "vla", |
| "vla-larger-than=", |
| "volatile-register-var", |
| "write-strings", |
| "zero-as-null-pointer-constant", |
| } |
| |
| // removeAfterEqual removes string after '='. '=' is preserved. |
| func removeAfterEqual(s string) string { |
| p := strings.Index(s, "=") |
| if p >= 0 { |
| return s[:p+1] |
| } |
| |
| return s |
| } |
| |
| // loadFromWeb reads body from url. |
| func loadFromWeb(url string) (string, error) { |
| resp, err := http.Get(url) |
| if err != nil { |
| return "", err |
| } |
| defer resp.Body.Close() |
| |
| body, err := ioutil.ReadAll(resp.Body) |
| if err != nil { |
| return "", err |
| } |
| |
| return string(body), nil |
| } |
| |
| // parseGnuDocument loads gnu document and parses it to list all warnings. |
| // The result might contain "no-" form warnings or duplicate. |
| func parseGnuDocument() ([]string, error) { |
| body, err := loadFromWeb(GnuDocumentUrl) |
| if err != nil { |
| return nil, err |
| } |
| |
| var warnings []string |
| |
| codeRE := regexp.MustCompile(`(?m)<dt><code>-W(.*)</code></dt>`) |
| removeTagRE := regexp.MustCompile(`<.*>`) |
| for _, matched := range codeRE.FindAllStringSubmatch(body, -1) { |
| s := matched[1] |
| s = removeTagRE.ReplaceAllString(s, "") |
| s = removeAfterEqual(s) |
| warnings = append(warnings, strings.TrimSpace(s)) |
| } |
| |
| return warnings, nil |
| } |
| |
| // parseClangDocument loads clang document and parses it to list all warnings. |
| // The result might contain "no-" form warnings or duplicate. |
| func parseClangDocument() ([]string, error) { |
| body, err := loadFromWeb(ClangDocumentUrl) |
| if err != nil { |
| return nil, err |
| } |
| |
| var warnings []string |
| |
| // clang document has ToC which consists of lines like the following: |
| // <li><a class="reference internal" href="#wcl4" id="id8">-WCL4</a></li> |
| // In this example, take "CL4" from this line. The content of href and id varies. |
| codeRE := regexp.MustCompile(`<li><a class="reference internal" href=".*" id=".*">-W(.*)</a></li>`) |
| for _, matched := range codeRE.FindAllStringSubmatch(body, -1) { |
| s := matched[1] |
| s = removeAfterEqual(s) |
| warnings = append(warnings, strings.TrimSpace(s)) |
| } |
| |
| return warnings, nil |
| } |
| |
| func main() { |
| clangWarnings, err := parseClangDocument() |
| if err != nil { |
| fmt.Fprintf(os.Stderr, "failed to read clang documents: %v\n", err) |
| os.Exit(1) |
| } |
| |
| gnuWarnings, err := parseGnuDocument() |
| if err != nil { |
| fmt.Fprintf(os.Stderr, "failed to read gnu documents: %v\n", err) |
| os.Exit(1) |
| } |
| |
| warnings := make(map[string]bool) |
| // We register warnings without "no-" form. |
| for _, w := range knownWarnings { |
| warnings[strings.TrimPrefix(w, "no-")] = true |
| } |
| for _, w := range clangWarnings { |
| warnings[strings.TrimPrefix(w, "no-")] = true |
| } |
| for _, w := range gnuWarnings { |
| warnings[strings.TrimPrefix(w, "no-")] = true |
| } |
| |
| var sortedWarnings []string |
| for w, _ := range warnings { |
| sortedWarnings = append(sortedWarnings, w) |
| } |
| sort.Strings(sortedWarnings) |
| |
| fmt.Print(`// Copyright 2017 Google Inc. All Rights Reserved. |
| // |
| // This is auto generated by build/generate_known_warnings_list.go |
| // DO NOT EDIT |
| |
| #ifndef DEVTOOLS_GOMA_LIB_KNOWN_WARNING_OPTIONS_H_ |
| #define DEVTOOLS_GOMA_LIB_KNOWN_WARNING_OPTIONS_H_ |
| |
| namespace devtools_goma { |
| const char* const kKnownWarningOptions[] { |
| `) |
| for _, w := range sortedWarnings { |
| fmt.Printf(" \"%s\",\n", w) |
| } |
| fmt.Print(`}; |
| } // namespace devtools_goma |
| |
| #endif // DEVTOOLS_GOMA_LIB_KNOWN_WARNING_OPTIONS_H_ |
| `) |
| } |
