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author | Marek Polacek <polacek@redhat.com> | 2021-01-13 16:33:39 -0500 |
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committer | Marek Polacek <polacek@redhat.com> | 2021-01-22 13:02:23 -0500 |
commit | 25fc4d01a8ed1888e6a65597a3387349eb3c950c (patch) | |
tree | 99ba82b9c52ec22db47720056a90198e905c81b7 /gcc/doc/invoke.texi | |
parent | bf8ee9e4eed6ba1a6d77b4cf168df480e1f954da (diff) | |
download | gcc-25fc4d01a8ed1888e6a65597a3387349eb3c950c.zip gcc-25fc4d01a8ed1888e6a65597a3387349eb3c950c.tar.gz gcc-25fc4d01a8ed1888e6a65597a3387349eb3c950c.tar.bz2 |
c++: ICE when mangling operator name [PR98545]
r11-6301 added some asserts in mangle.c, and now we trip over one of
them. In particular, it's the one asserting that we didn't get
IDENTIFIER_ANY_OP_P when mangling an expression with a dependent name.
As this testcase shows, it's possible to get that, so turn the assert
into an if and write "on". That changes the mangling in the following
way:
With this patch:
$ c++filt _ZN1i1hIJ1adS1_EEEDTcldtdefpTonclspcvT__EEEDpS2_
decltype (((*this).(operator()))((a)(), (double)(), (a)())) i::h<a, double, a>(a, double, a)
G++10:
$ c++filt _ZN1i1hIJ1adS1_EEEDTcldtdefpTclspcvT__EEEDpS2_
decltype (((*this).(operator()))((a)(), (double)(), (a)())) i::h<a, double, a>(a, double, a)
clang++/icc:
$ c++filt _ZN1i1hIJ1adS1_EEEDTclonclspcvT__EEEDpS2_
decltype ((operator())((a)(), (double)(), (a)())) i::h<a, double, a>(a, double, a)
This is now tracked in PR98756.
gcc/cp/ChangeLog:
PR c++/98545
* mangle.c (write_member_name): Emit abi_warn_or_compat_version_crosses
warnings regardless of abi_version_at_least.
(write_expression): When the expression is a dependent name
and an operator name, write "on" before writing its name.
gcc/ChangeLog:
PR c++/98545
* doc/invoke.texi: Update C++ ABI Version 15 description.
gcc/testsuite/ChangeLog:
PR c++/98545
* g++.dg/abi/mangle76.C: New test.
Diffstat (limited to 'gcc/doc/invoke.texi')
-rw-r--r-- | gcc/doc/invoke.texi | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 5f4a066..99d2546 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -2837,7 +2837,8 @@ Version 14, which first appeared in G++ 10, corrects the mangling of the nullptr expression. Version 15, which first appeared in G++ 11, changes the mangling of -@code{__alignof__} to be distinct from that of @code{alignof}. +@code{__alignof__} to be distinct from that of @code{alignof}, and +dependent operator names. See also @option{-Wabi}. |