Fix #1237, avoid calling memchr() with unknown size buffer #1238
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In some systems, passing a large size value to memchr() causes it to return NULL, even if the char is guaranteed to be found within the actual valid buffer memory. This modifies the string buffer comparison function to actively check for this sentinel value and use "strlen()" instead.
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Note - format check issue appears to be a problem that was already in the build (not caused by this PR) |
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Co-authored-by: Joseph Hickey <jphickey@users.noreply.github.com>
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Co-authored-by: Joseph Hickey <jphickey@users.noreply.github.com>
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Describe the contribution
In some systems, passing a large size value to memchr() causes it to return NULL, even if the char is guaranteed to be found within the actual valid buffer memory.
This modifies the string buffer comparison function to actively check for this sentinel value and use "strlen()" instead.
Fixes #1237
Testing performed
Build and sanity check, run all tests on both Ubuntu (latest version) and CentOS 7 VM
Expected behavior changes
Tests pass in both systems (no SEGV on CentOS 7)
System(s) tested on
Ubuntu 21.10
CentOS 7
Contributor Info - All information REQUIRED for consideration of pull request
Joseph Hickey, Vantage Systems, Inc.