Eliminated warnings in Visual Studio 2019.#96
Open
cosinekitty wants to merge 2 commits intolieff:masterfrom
Open
Eliminated warnings in Visual Studio 2019.#96cosinekitty wants to merge 2 commits intolieff:masterfrom
cosinekitty wants to merge 2 commits intolieff:masterfrom
Conversation
The Microsoft C/C++ compiler warned about possibly
writing too much memory in lines like this:
memset(scratch.grbuf[0], 0, 576*2*sizeof(float));
Although the code is correct, it confuses the compiler
into thinking more memory is being zeroed out than
intended. scratch.grbuf[0] holds only half as many
bytes as scratch.grbuf, but the code intends to
zero out the entire array, not just the first half.
Replaced with identical code that eliminates
the warning:
memset(scratch.grbuf, 0, sizeof(scratch.grbuf));
This is also easier to understand and verify as correct.
The Visual Studio 2019 C/C++ compiler reported
a warning that the following array accesses in
L3_stereo_process could go out of bounds:
kl = g_pan[2*ipos];
kr = g_pan[2*ipos + 1];
The compiler apparently believes that the
value of the expression `HDR_TEST_MPEG1(hdr)`
could change its value when evaluated more than once,
even though it is clear from the code that the header
data is constant. The compiler's false theory results
in a perceived risk of reading outside the array
bounds of `g_pan`.
By explicitly evaluating `HDR_TEST_MPEG1(hdr)`
exactly once and holding its value in a local
variable, the warning disappears.
manxorist
added a commit
to OpenMPT/openmpt
that referenced
this pull request
Aug 15, 2024
…eleases/tag/openmpt-2024-08-15-v2> commit 30b5aea9b6d000f197798ddd44476b641a4d0ba7 (2024-08-15). This applies the following pull requests: <lieff/minimp3#126>, <lieff/minimp3#96>, <lieff/minimp3#97>. git-svn-id: https://source.openmpt.org/svn/openmpt/trunk/OpenMPT@21443 56274372-70c3-4bfc-bfc3-4c3a0b034d27
manxorist
added a commit
to OpenMPT/openmpt
that referenced
this pull request
Aug 15, 2024
[Var] minimp3: Update to fork <https://github.com/manxorist/minimp3/releases/tag/openmpt-2024-08-15-v2> commit 30b5aea9b6d000f197798ddd44476b641a4d0ba7 (2024-08-15). This applies the following pull requests: <lieff/minimp3#126>, <lieff/minimp3#96>, <lieff/minimp3#97>. ........ git-svn-id: https://source.openmpt.org/svn/openmpt/branches/OpenMPT-1.31@21444 56274372-70c3-4bfc-bfc3-4c3a0b034d27
manxorist
added a commit
to OpenMPT/openmpt
that referenced
this pull request
Nov 7, 2025
[Ref] minimp3: Silence warning. ........ [Var] minimp3: Update to fork <https://github.com/manxorist/minimp3/releases/tag/openmpt-2024-08-15-v2> commit 30b5aea9b6d000f197798ddd44476b641a4d0ba7 (2024-08-15). This applies the following pull requests: <lieff/minimp3#126>, <lieff/minimp3#96>, <lieff/minimp3#97>. ........ [Var] minimp3: Update to fork <https://github.com/manxorist/minimp3/releases/tag/openmpt-2024-08-15-v3> commit 2811a29e4115199209fe91ae5217c9c5fc611fa6 (2024-08-15). This applies the following pull requests: <lieff/minimp3#125>. ........ [Var] minimp3: Update to fork <https://github.com/manxorist/minimp3/releases/tag/openmpt-2024-08-15-v4> commit 2811a29e4115199209fe91ae5217c9c5fc611fa6 (2024-08-15). This applies the following pull requests: <lieff/minimp3#127>. ........ git-svn-id: https://source.openmpt.org/svn/openmpt/branches/OpenMPT-1.30@24370 56274372-70c3-4bfc-bfc3-4c3a0b034d27
manxorist
added a commit
to OpenMPT/openmpt
that referenced
this pull request
Nov 7, 2025
[Ref] minimp3: Silence warning. ........ [Var] minimp3: Update to fork <https://github.com/manxorist/minimp3/releases/tag/openmpt-2024-08-15-v2> commit 30b5aea9b6d000f197798ddd44476b641a4d0ba7 (2024-08-15). This applies the following pull requests: <lieff/minimp3#126>, <lieff/minimp3#96>, <lieff/minimp3#97>. ........ [Var] minimp3: Update to fork <https://github.com/manxorist/minimp3/releases/tag/openmpt-2024-08-15-v3> commit 2811a29e4115199209fe91ae5217c9c5fc611fa6 (2024-08-15). This applies the following pull requests: <lieff/minimp3#125>. ........ [Var] minimp3: Update to fork <https://github.com/manxorist/minimp3/releases/tag/openmpt-2024-08-15-v4> commit 2811a29e4115199209fe91ae5217c9c5fc611fa6 (2024-08-15). This applies the following pull requests: <lieff/minimp3#127>. ........ git-svn-id: https://source.openmpt.org/svn/openmpt/branches/OpenMPT-1.29@24373 56274372-70c3-4bfc-bfc3-4c3a0b034d27
manxorist
added a commit
to OpenMPT/openmpt
that referenced
this pull request
Nov 7, 2025
[Ref] minimp3: Silence warning. ........ [Var] minimp3: Update to fork <https://github.com/manxorist/minimp3/releases/tag/openmpt-2024-08-15-v2> commit 30b5aea9b6d000f197798ddd44476b641a4d0ba7 (2024-08-15). This applies the following pull requests: <lieff/minimp3#126>, <lieff/minimp3#96>, <lieff/minimp3#97>. ........ [Var] minimp3: Update to fork <https://github.com/manxorist/minimp3/releases/tag/openmpt-2024-08-15-v3> commit 2811a29e4115199209fe91ae5217c9c5fc611fa6 (2024-08-15). This applies the following pull requests: <lieff/minimp3#125>. ........ [Var] minimp3: Update to fork <https://github.com/manxorist/minimp3/releases/tag/openmpt-2024-08-15-v4> commit 2811a29e4115199209fe91ae5217c9c5fc611fa6 (2024-08-15). This applies the following pull requests: <lieff/minimp3#127>. ........ git-svn-id: https://source.openmpt.org/svn/openmpt/branches/OpenMPT-1.28@24377 56274372-70c3-4bfc-bfc3-4c3a0b034d27
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
The Microsoft C/C++ compiler warned about possibly
writing too much memory in lines like this:
Although the code is correct, it confuses the compiler
into thinking more memory is being zeroed out than
intended. scratch.grbuf[0] holds only half as many
bytes as scratch.grbuf, but the code intends to
zero out the entire array, not just the first half.
Replaced with identical code that eliminates
the warning:
This is also easier to understand and verify as correct.