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author | Paolo Carlini <paolo.carlini@oracle.com> | 2018-05-08 10:03:39 +0000 |
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committer | Paolo Carlini <paolo@gcc.gnu.org> | 2018-05-08 10:03:39 +0000 |
commit | 4430130d282ddb77373e716376b66bf4c007bbfa (patch) | |
tree | 855dfec1f557b5a26db731a56268bb2bae9541c7 /gcc | |
parent | f22d79731aa17d6bab7f843fb146a00f67e0bdbe (diff) | |
download | gcc-4430130d282ddb77373e716376b66bf4c007bbfa.zip gcc-4430130d282ddb77373e716376b66bf4c007bbfa.tar.gz gcc-4430130d282ddb77373e716376b66bf4c007bbfa.tar.bz2 |
re PR c++/70563 (SFINAE fails when trying invalid template instantiation)
2018-05-08 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/70563
* g++.dg/cpp0x/sfinae62.C: New.
From-SVN: r260030
Diffstat (limited to 'gcc')
-rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
-rw-r--r-- | gcc/testsuite/g++.dg/cpp0x/sfinae62.C | 41 |
2 files changed, 46 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index cc61ffb..d5126b3 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2018-05-08 Paolo Carlini <paolo.carlini@oracle.com> + + PR c++/70563 + * g++.dg/cpp0x/sfinae62.C: New. + 2018-05-08 Richard Sandiford <richard.sandiford@linaro.org> * gcc.target/aarch64/sve/vcond_6.c (LOOP): Unconditionally diff --git a/gcc/testsuite/g++.dg/cpp0x/sfinae62.C b/gcc/testsuite/g++.dg/cpp0x/sfinae62.C new file mode 100644 index 0000000..7bde64c --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp0x/sfinae62.C @@ -0,0 +1,41 @@ +// PR c++/70563 +// { dg-do compile { target c++11 } } + +template<typename... T> using void_t = void; + +template<typename T> struct TemporaryBindObject +{ +}; + +struct MyTrueType +{ + static constexpr bool value = true; +}; + +struct MyFalseType +{ + static constexpr bool value = false; +}; + +template<template<typename...> class Dest> struct TestValidBind +{ + template<typename T, typename = void_t<>> struct toTypesOf : MyFalseType + {}; + template<template<typename...> class Src, typename... Ts> struct toTypesOf<Src<Ts...>, void_t<Dest<Ts...,float>>> : MyTrueType + {}; +}; + +template<typename T> struct OneParamStruct +{ +}; +template<typename T1, typename T2> struct TwoParamStruct +{ +}; + +using tmp = TemporaryBindObject<int>; + +int main() +{ + bool value1 = TestValidBind<TwoParamStruct>::toTypesOf<TemporaryBindObject<int>>::value; + bool value2 = TestValidBind<OneParamStruct>::toTypesOf<TemporaryBindObject<int>>::value; +} |