[llvm-bugs] [Bug 39820] New: -Wfloat-conversion error message formatting error

via llvm-bugs llvm-bugs at lists.llvm.org
Wed Nov 28 03:07:16 PST 2018


            Bug ID: 39820
           Summary: -Wfloat-conversion error message formatting error
           Product: clang
           Version: trunk
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: jyrki.havia at helsinki.fi
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

Given code

[havia at villikani colld]$ cat k.c
int main(void)
        double a = 3.0;
        long b = 2;

        b /= a;

        return 0;

[havia at villikani colld]$ clang-8 -Weverything  k.c
k.c:6:4: warning: implicit conversion turns floating-point number into integer:
'long' to 'double' [-Wfloat-conversion]
        b /= a;
1 warning generated.

  Shouldn't the end of the message be
  "'double' to 'long'" instead of "'long' to 'double'"?

clang-8 is localy compiled

[havia at villikani colld]$ clang-8 -v
clang version 8.0.0 (trunk 345705)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/llvm/bin
Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.8.2
Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.8.5
Selected GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.8.5
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64

  The environment is

[havia at villikani colld]$ lsb_release 
LSB Version:   

[havia at villikani colld]$ cat /etc/redhat-release 
CentOS Linux release 7.5.1804 (Core) 
[havia at villikani colld]$

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