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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Static locals in inline functions should be hidden with -fvisibility=hidden and -fvisibility-inlines-hidden"
href="https://bugs.llvm.org/show_bug.cgi?id=39236">39236</a>
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<th>Summary</th>
<td>Static locals in inline functions should be hidden with -fvisibility=hidden and -fvisibility-inlines-hidden
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>LLVM Codegen
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>rnk@google.com
</td>
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<th>CC</th>
<td>hans@chromium.org, inouehrs@jp.ibm.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>This is a bug in the fix to <a href="https://llvm.org/pr37595">https://llvm.org/pr37595</a>, or r340386.
We encountered it in Chromium here: <a href="https://crbug.com/891992#c20">https://crbug.com/891992#c20</a>
This probably isn't too hard to fix.
Pasting Hans's reproducer below:
Yes, it seems Clang and GCC behave differently here:
inline int foo() {
static int x;
return x++;
}
int use() { return foo(); }
$ g++ -fvisibility=hidden -fvisibility-inlines-hidden -c /tmp/a.cc && objdump
-t a.o
a.o: file format elf64-x86-64
SYMBOL TABLE:
0000000000000000 l df *ABS* 0000000000000000 a.cc
0000000000000000 l d .text 0000000000000000 .text
0000000000000000 l d .data 0000000000000000 .data
0000000000000000 l d .bss 0000000000000000 .bss
0000000000000000 l d .bss._ZZ3foovE1x 0000000000000000
.bss._ZZ3foovE1x
0000000000000000 l d .text._Z3foov 0000000000000000 .text._Z3foov
0000000000000000 l d .note.GNU-stack 0000000000000000
.note.GNU-stack
0000000000000000 l d .eh_frame 0000000000000000 .eh_frame
0000000000000000 l d .<a href="show_bug.cgi?id=39236#c0000000000000000">comment 0000000000000000</a> .comment
0000000000000000 l d .group 0000000000000000 .group
0000000000000000 l d .group 0000000000000000 .group
0000000000000000 u O .bss._ZZ3foovE1x 0000000000000004 .hidden
_ZZ3foovE1x <---- foo()::x is hidden
0000000000000000 w F .text._Z3foov 0000000000000015 .hidden _Z3foov
0000000000000000 g F .text 000000000000000b .hidden _Z3usev
$ clang++ -fvisibility=hidden -fvisibility-inlines-hidden -c /tmp/a.cc &&
objdump -t a.o
a.o: file format elf64-x86-64
SYMBOL TABLE:
0000000000000000 l df *ABS* 0000000000000000 a.cc
0000000000000000 l d .text 0000000000000000 .text
0000000000000000 l d .text._Z3foov 0000000000000000 .text._Z3foov
0000000000000000 w F .text._Z3foov 0000000000000019 .hidden _Z3foov
0000000000000000 g F .text 000000000000000b .hidden _Z3usev
0000000000000000 w O .bss._ZZ3foovE1x 0000000000000004 _ZZ3foovE1x
<----- foo()::x is not hidden</pre>
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