https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89443
Bug ID: 89443
Summary: asm "volatile" keyword no longer supported
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: manuel.lauss at googlemail dot com
Target Milestone: ---
Created attachment 45791
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45791&action=edit
compressed preprocessed source
I'm not certain whether this is a gcc bug at all:
The attached preprocessed source, taken from qtscript-5.11.3, throws this error
with current gcc-8.2.1. A gcc-8 snapshot taken on 01-DEC-2018 used to compile
this package just fine.
It seems that the "volatile" in asm volatile (...) is no longer valid:
g++ -c test.i
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:483:5: error:
expected ‘(’ before ‘volatile’
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:484:1: error:
expected unqualified-id before string constant
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:483:15: error:
expected ‘)’ before string constant
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:518:5: error:
expected ‘(’ before ‘volatile’
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:519:1: error:
expected unqualified-id before string constant
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:518:15: error:
expected ‘)’ before string constant
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:534:5: error:
expected ‘(’ before ‘volatile’
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:535:1: error:
expected unqualified-id before string constant
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:534:15: error:
expected ‘)’ before string constant
E.g line 105753 in test.i file:
asm volatile (
".text\n"
".globl " "ctiTrampoline" "\n"
".hidden " "ctiTrampoline" "\n"
"ctiTrampoline" ":" "\n"
"pushq %rbp" "\n"
"movq %rsp, %rbp" "\n"
"pushq %r12" "\n"
[...]
removing the "volatile" solves this. gcc-7.4.1 has the same problems.
Thank you!
