Carel created THRIFT-5790:
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Summary: Thrift headers raise compiler warnings on MSVC
Key: THRIFT-5790
URL: https://issues.apache.org/jira/browse/THRIFT-5790
Project: Thrift
Issue Type: Bug
Environment: Windows
MSVC compiler
Reporter: Carel
Assignee: Carel
When building a C++ application using MSVC (2019) the following warnings are
raised:
[c4706|https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-4-c4706?view=msvc-160]
{code}
<...>\include\thrift\protocol\TBinaryProtocol.tcc(453) : warning C4706:
assignment within conditional expression
{code}
{code}
{code}
This makes it impossible to build code using the warnings as errors option.
One option could have been to mark the headers as external as discussed
[here|https://learn.microsoft.com/en-us/cpp/build/reference/external-external-headers-diagnostics?view=msvc-160]
but one should see on that page under Limitations:
bq. Some warnings emitted by the compiler's back-end code generation aren't
affected by the /external options. These warnings usually start with C47XX,
though not all C47XX warnings are back-end warnings. You can still disable
these warnings individually by using /wd47XX. Code analysis warnings are also
unaffected, since they don't have warning levels.
And as one would guess these all fall under that limitation.
Disabling the warning globally does work, but is not ideal for hopefully
obvious reasons.
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