https://llvm.org/bugs/show_bug.cgi?id=27493
Bug ID: 27493
Summary: -Wdeclaration-after-statement not working
Product: clang
Version: 3.7
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: j...@iki.fi
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
$ cat das.c
int foo() {
if (0) {}
int i = 42;
return i;
}
$ clang-mp-3.7 -Wdeclaration-after-statement -c das.c
Nothing. As opposed to:
gcc-mp-5 -Wdeclaration-after-statement -c das.c
das.c: In function 'foo':
das.c:3:3: warning: ISO C90 forbids mixed declarations and code
[-Wdeclaration-after-statement]
int i = 42;
^
Note that I'm using the macports clang and gcc. Their versions:
$ clang-mp-3.7 -v
clang version 3.7.1 (tags/RELEASE_371/final)
Target: x86_64-apple-darwin15.4.0
Thread model: posix
$ gcc-mp-5 -v
...
gcc version 5.3.0 (MacPorts gcc5 5.3.0_0)
I tried clangs 3.4, 3.5, 3.6, the same result of no warning.
I tried gccs 4.3, 4.4, 4.5, 4.6, 4.8, 4.9, emit the warning.
I also finally tried clang 3.4 on a Ubuntu precise VM, the same result of no
warning.
Don't have a clang 3.8 installation available.
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