[LLVMbugs] [Bug 4991] New: __TIMESTAMP__ has trailing newline

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Wed Sep 16 01:10:23 PDT 2009


           Summary: __TIMESTAMP__ has trailing newline
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: preprocessor
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: edwintorok at gmail.com
                CC: llvmbugs at cs.uiuc.edu

__TIMESTAMP__ has a trailing newline on Linux/x86-64 (that is what
ctime/ctime_r returns), which causes invalid C code to be generated (clang
accepts it though).

Compiling this code with clang outputs a trailing newline:
#include <stdio.h>
int main()

Compiling it like this works:
$ clang foo.c && ./a.out
Wed Sep 16 11:08:01 2009


However if I preprocess first, clang doesn't accept its own (!) preprocessed
clang -E foo.c|clang -x c -
In file included from foo.c:1:
In file included from foo.c:1:
foo.c:4:10: error: missing terminating '"' character
    puts("Wed Sep 16 11:08:01 2009
foo.c:4:10: error: expected expression
foo.c:5:1: error: missing terminating '"' character
foo.c:6:2: error: expected '}'
4 diagnostics generated.

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