From Jason Turner

[diff.cpp03.input.output]

C++20 → C++23 2.1 KB 14 lines
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Archived: C++20 | C++23
Markdown: C++20 | C++23
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  1. tmp/tmp358xxbke/{from.md → to.md} +5 -5
tmp/tmp358xxbke/{from.md → to.md} RENAMED
@@ -1,12 +1,12 @@
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  ### [[input.output]]: input/output library <a id="diff.cpp03.input.output">[[diff.cpp03.input.output]]</a>
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  **Change:** Specify use of `explicit` in existing boolean conversion
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  functions. **Rationale:** Clarify intentions, avoid workarounds.
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  **Effect on original feature:** Valid C++03 code that relies on implicit
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- boolean conversions will fail to compile with this International
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- Standard. Such conversions occur in the following conditions:
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  - passing a value to a function that takes an argument of type `bool`;
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  - using `operator==` to compare to `false` or `true`;
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  - returning a value from a function with a return type of `bool`;
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  - initializing members of type `bool` via aggregate initialization;
@@ -16,18 +16,18 @@ Standard. Such conversions occur in the following conditions:
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  **Rationale:** More detailed error messages. **Effect on original
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  feature:** `std::ios_base::failure` is no longer derived directly from
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  `std::exception`, but is now derived from `std::system_error`, which in
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  turn is derived from `std::runtime_error`. Valid C++03 code that assumes
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  that `std::ios_base::failure` is derived directly from `std::exception`
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- may execute differently in this International Standard.
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  **Change:** Flag types in `std::ios_base` are now bitmasks with values
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  defined as constexpr static members. **Rationale:** Required for new
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  features. **Effect on original feature:** Valid C++03 code that relies
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  on `std::ios_base` flag types being represented as `std::bitset` or as
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- an integer type may fail to compile with this International Standard.
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- For example:
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  ``` cpp
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  #include <iostream>
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  int main() {
 
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  ### [[input.output]]: input/output library <a id="diff.cpp03.input.output">[[diff.cpp03.input.output]]</a>
2
 
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  **Change:** Specify use of `explicit` in existing boolean conversion
4
  functions. **Rationale:** Clarify intentions, avoid workarounds.
5
  **Effect on original feature:** Valid C++03 code that relies on implicit
6
+ boolean conversions will fail to compile with this revision of C++. Such
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+ conversions occur in the following conditions:
8
 
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  - passing a value to a function that takes an argument of type `bool`;
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  - using `operator==` to compare to `false` or `true`;
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  - returning a value from a function with a return type of `bool`;
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  - initializing members of type `bool` via aggregate initialization;
 
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  **Rationale:** More detailed error messages. **Effect on original
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  feature:** `std::ios_base::failure` is no longer derived directly from
18
  `std::exception`, but is now derived from `std::system_error`, which in
19
  turn is derived from `std::runtime_error`. Valid C++03 code that assumes
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  that `std::ios_base::failure` is derived directly from `std::exception`
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+ may execute differently in this revision of C++.
22
 
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  **Change:** Flag types in `std::ios_base` are now bitmasks with values
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  defined as constexpr static members. **Rationale:** Required for new
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  features. **Effect on original feature:** Valid C++03 code that relies
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  on `std::ios_base` flag types being represented as `std::bitset` or as
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+ an integer type may fail to compile with this revision of C++. For
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+ example:
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  ``` cpp
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  #include <iostream>
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  int main() {