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configure: do not set -Wformat=2 for mingw debug builds #6082

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configure: do not set -Wformat=2 for mingw debug builds #6082

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@bagder
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@bagder bagder commented Oct 14, 2020

With GCC 10 (at least) on mingw, we get false positive warnings
when using this option. Never use it for mingw.

Fixes #6079

@bagder bagder added the build label Oct 14, 2020
@MarcelRaad
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As this is a bug specific to GCC 10, I'd rather at least leave it on on older versions, wouldn't you?
Also, for the record, an alternative would be to disable -pedantic as the -Wpedantic-ms-format warning is a combination of those two.

MarcelRaad
MarcelRaad reviewed Oct 15, 2020
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Or can we maybe do that only for that one file where the specific warning cannot be disabled?

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bagder commented Oct 15, 2020

Let me try that...

bagder added 3 commits October 15, 2020 10:12
@bagder
configure: do not set -Wformat=2 for mingw debug builds
834bd7f 
With GCC 10 (at least) on mingw, we get false positive warnings
when using this option. Never use it for mingw.

Fixes #6079
@bagder
Revert "configure: do not set -Wformat=2 for mingw debug builds"
bea3c8c 
This reverts commit 834bd7f.
@bagder
src/tool_filetime: disable -Wformat on mingw for this file
e2af803 
Fixes #6079
@bagder bagder force-pushed the bagder/configure-format-mingw branch from 462b357 to e2af803 Compare October 15, 2020 08:17
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bagder commented Oct 15, 2020

Seems to work. Now we're back to our regular set of flaky test results... 😞

@bagder bagder closed this in 7c88fe3 Oct 15, 2020
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mback2k commented Oct 15, 2020 •
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Seems to work.

Great!

Now we're back to our regular set of flaky test results... 😞

Which I am hardly trying to solve... 🧑‍🏭

@bagder bagder deleted the bagder/configure-format-mingw branch December 22, 2020 12:53
mback2k added a commit to mback2k/curl that referenced this pull request Dec 13, 2021
@mback2k
CI: build examples for additional code verification
8c81ead 
Some CIs already build them, let's do it on more of them.

Ignore -Wformat while using GCC on mingw to compile examples.
Improve size_t to long conversion in imap-append.c example.

Ref: curl#6079
Ref: curl#6082
Assisted-by: Jay Satiro

Follow up to curl#7690
Replaces curl#7591
Closes curl#7922
mback2k added a commit that referenced this pull request Dec 14, 2021
@mback2k
docs/examples: workaround broken -Wno-pedantic-ms-format
77311f4 
Avoid CURL_FORMAT_CURL_OFF_T by using unsigned long instead.
Improve size_t to long conversion in imap-append.c example.

Ref: #6079
Ref: #6082
Assisted-by: Jay Satiro
Reviewed-by: Daniel Stenberg

Preparation of #7922
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Azure DevOps shows GCC 10 compilation errors due to type mismatch between curl_off_t typeof and format

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