[LLVMbugs] [Bug 14543] New: Assertion `isdigit(*DiagStr) && "Invalid format for argument in diagnostic"' failed.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=14543

             Bug #: 14543
           Summary: Assertion `isdigit(*DiagStr) && "Invalid format for
                    argument in diagnostic"' failed.
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: silvas at purdue.edu
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


It seems like diag::err_drv_invalid_value is interpreting its argument as a
format string.

clang -cc1 -fdiagnostics-show-category='%d' test.c
clang -cc1 -fdiagnostics-format='%d' ~/test.c

using '%0' generates a different assertion.

sean:~/pg/llvm/r+a_intel % ./bin/clang -cc1 -fdiagnostics-format='%d' ~/test.c
clang: /home/sean/pg/llvm/llvm/tools/clang/lib/Basic/Diagnostic.cpp:725: void
clang::Diagnostic::FormatDiagnostic(const char *, const char *,
llvm::SmallVectorImpl<char> &) const: Assertion `isdigit(*DiagStr) && "Invalid
format for argument in diagnostic"' failed.
0  clang           0x0000000001960e9e
1  clang           0x000000000195ff64
2  libpthread.so.0 0x00007f64dbbd7cb0
3  libc.so.6       0x00007f64db02d425 gsignal + 53
4  libc.so.6       0x00007f64db030b8b abort + 379
5  libc.so.6       0x00007f64db0260ee
6  libc.so.6       0x00007f64db026192
7  clang           0x0000000001969530 clang::Diagnostic::FormatDiagnostic(char
const*, char const*, llvm::SmallVectorImpl<char>&) const + 4608
8  clang           0x0000000001c50cdb
clang::TextDiagnosticPrinter::HandleDiagnostic(clang::DiagnosticsEngine::Level,
clang::Diagnostic const&) + 75
9  clang           0x000000000196e984
clang::DiagnosticIDs::EmitDiag(clang::DiagnosticsEngine&,
clang::DiagnosticIDs::Level) const + 52
10 clang           0x000000000196de52
clang::DiagnosticIDs::ProcessDiag(clang::DiagnosticsEngine&) const + 306
11 clang           0x000000000196ab97
clang::DiagnosticsEngine::EmitCurrentDiagnostic(bool) + 119
12 clang           0x0000000001c4fed9
clang::TextDiagnosticBuffer::FlushDiagnostics(clang::DiagnosticsEngine&) const
+ 201
13 clang           0x0000000000a04c80 cc1_main(char const**, char const**, char
const*, void*) + 1712
14 clang           0x00000000009ff48a main + 874
15 libc.so.6       0x00007f64db01876d __libc_start_main + 237
16 clang           0x00000000009ff059
Stack dump:
0.      Program arguments: ./bin/clang -cc1 -fdiagnostics-format=%d
/home/sean/test.c 
zsh: abort (core dumped)  ./bin/clang -cc1 -fdiagnostics-format='%d' ~/test.c

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