Bug 283768 – SVGToOTFFontConversion.cpp:169:29: error: use of overloaded operator '[]' is ambiguous (with operand types 'ASCIILiteral' and 'int')

• Component: SVG
• Status: RESOLVED FIXED

[Michael Catanzaro]

WebKitGTK 2.47.2 does not build on i686:

In file included from /builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/redhat-linux-build/webkitgtk-6.0/WebCore/DerivedSources/unified-sources/UnifiedSource-8feba646-15.cpp:6:
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:169:29: error: use of overloaded operator '[]' is ambiguous (with operand types 'ASCIILiteral' and 'int')
  169 |         m_result.append(code[0]);
      |                         ~~~~^~
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/redhat-linux-build/webkitgtk-6.0/WTF/Headers/wtf/text/ASCIILiteral.h:76:20: note: candidate function
   76 |     constexpr char operator[](size_t index) const { return m_charactersWithNullTerminator[index]; }
      |                    ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:169:29: note: built-in candidate operator[](const char *, int)
  169 |         m_result.append(code[0]);
      |                             ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:169:29: note: built-in candidate operator[](const volatile char *, int)
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:170:29: error: use of overloaded operator '[]' is ambiguous (with operand types 'ASCIILiteral' and 'int')
  170 |         m_result.append(code[1]);
      |                         ~~~~^~
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/redhat-linux-build/webkitgtk-6.0/WTF/Headers/wtf/text/ASCIILiteral.h:76:20: note: candidate function
   76 |     constexpr char operator[](size_t index) const { return m_charactersWithNullTerminator[index]; }
      |                    ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:170:29: note: built-in candidate operator[](const char *, int)
  170 |         m_result.append(code[1]);
      |                             ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:170:29: note: built-in candidate operator[](const volatile char *, int)
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:171:29: error: use of overloaded operator '[]' is ambiguous (with operand types 'ASCIILiteral' and 'int')
  171 |         m_result.append(code[2]);
      |                         ~~~~^~
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/redhat-linux-build/webkitgtk-6.0/WTF/Headers/wtf/text/ASCIILiteral.h:76:20: note: candidate function
   76 |     constexpr char operator[](size_t index) const { return m_charactersWithNullTerminator[index]; }
      |                    ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:171:29: note: built-in candidate operator[](const char *, int)
  171 |         m_result.append(code[2]);
      |                             ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:171:29: note: built-in candidate operator[](const volatile char *, int)
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:172:29: error: use of overloaded operator '[]' is ambiguous (with operand types 'ASCIILiteral' and 'int')
  172 |         m_result.append(code[3]);
      |                         ~~~~^~
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/redhat-linux-build/webkitgtk-6.0/WTF/Headers/wtf/text/ASCIILiteral.h:76:20: note: candidate function
   76 |     constexpr char operator[](size_t index) const { return m_charactersWithNullTerminator[index]; }
      |                    ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:172:29: note: built-in candidate operator[](const char *, int)
  172 |         m_result.append(code[3]);
      |                             ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:172:29: note: built-in candidate operator[](const volatile char *, int)
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:1508:48: error: use of overloaded operator '[]' is ambiguous (with operand types 'ASCIILiteral' and 'int')
 1508 |     m_result[directoryEntryOffset] = identifier[0];
      |                                      ~~~~~~~~~~^~
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/redhat-linux-build/webkitgtk-6.0/WTF/Headers/wtf/text/ASCIILiteral.h:76:20: note: candidate function
   76 |     constexpr char operator[](size_t index) const { return m_charactersWithNullTerminator[index]; }
      |                    ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:1508:48: note: built-in candidate operator[](const char *, int)
 1508 |     m_result[directoryEntryOffset] = identifier[0];
      |                                                ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:1508:48: note: built-in candidate operator[](const volatile char *, int)
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:1509:52: error: use of overloaded operator '[]' is ambiguous (with operand types 'ASCIILiteral' and 'int')
 1509 |     m_result[directoryEntryOffset + 1] = identifier[1];
      |                                          ~~~~~~~~~~^~
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/redhat-linux-build/webkitgtk-6.0/WTF/Headers/wtf/text/ASCIILiteral.h:76:20: note: candidate function
   76 |     constexpr char operator[](size_t index) const { return m_charactersWithNullTerminator[index]; }
      |                    ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:1509:52: note: built-in candidate operator[](const char *, int)
 1509 |     m_result[directoryEntryOffset + 1] = identifier[1];
      |                                                    ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:1509:52: note: built-in candidate operator[](const volatile char *, int)
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:1510:52: error: use of overloaded operator '[]' is ambiguous (with operand types 'ASCIILiteral' and 'int')
 1510 |     m_result[directoryEntryOffset + 2] = identifier[2];
      |                                          ~~~~~~~~~~^~
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/redhat-linux-build/webkitgtk-6.0/WTF/Headers/wtf/text/ASCIILiteral.h:76:20: note: candidate function
   76 |     constexpr char operator[](size_t index) const { return m_charactersWithNullTerminator[index]; }
      |                    ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:1510:52: note: built-in candidate operator[](const char *, int)
 1510 |     m_result[directoryEntryOffset + 2] = identifier[2];
      |                                                    ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:1510:52: note: built-in candidate operator[](const volatile char *, int)
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:1511:52: error: use of overloaded operator '[]' is ambiguous (with operand types 'ASCIILiteral' and 'int')
 1511 |     m_result[directoryEntryOffset + 3] = identifier[3];
      |                                          ~~~~~~~~~~^~
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/redhat-linux-build/webkitgtk-6.0/WTF/Headers/wtf/text/ASCIILiteral.h:76:20: note: candidate function
   76 |     constexpr char operator[](size_t index) const { return m_charactersWithNullTerminator[index]; }
      |                    ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:1511:52: note: built-in candidate operator[](const char *, int)
 1511 |     m_result[directoryEntryOffset + 3] = identifier[3];
      |                                                    ^
/builddir/build/BUILD/webkitgtk-2.47.2-build/webkitgtk-2.47.2/Source/WebCore/svg/SVGToOTFFontConversion.cpp:1511:52: note: built-in candidate operator[](const volatile char *, int)
8 errors generated.

[Michael Catanzaro]

Pull request: https://github.com/WebKit/WebKit/pull/37207

[Alberto Garcia]

Also in armel / armhf.

FWIW this problem seems to happen only with clang, the gcc build works fine.

[EWS]

Committed 287287@main (0b149ed6d30f): <https://commits.webkit.org/287287@main>

Reviewed commits have been landed. Closing PR #37207 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/140862187>