[LLVMbugs] [Bug 5348] New: asm attribute applied after use of function is broken

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=5348

           Summary: asm attribute applied after use of function is broken
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Semantic Analyzer
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: daniel at zuster.org
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com


We should do something different on the following code:
--
ddunbar at ozzy:tmp$ cat t.c
void f0(void);

void g0() {
  f0();
}

extern void f0(void) __asm__ ("bar");

void f0() {
  extern void f1(void);
  f1();
}
ddunbar at ozzy:tmp$ clang -emit-llvm -S -o -  t.c
; ModuleID = 't.c'
target datalayout =
"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
target triple = "x86_64-apple-darwin10.0"

define void @g0() nounwind ssp {
entry:
  call void @f0() ssp
  ret void
}

declare void @f0() ssp

define void @"\01bar"() nounwind ssp {
entry:
  call void @f1() ssp
  ret void
}

declare void @f1() ssp
ddunbar at ozzy:tmp$ 
--

gcc/llvm-gcc drop the __asm__ attribute and warn about it, perhaps we should
just make this an error?


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