https://bugs.kde.org/show_bug.cgi?id=498936
Bug ID: 498936
Summary: POSIX timer signal not being delivered
Classification: Developer tools
Product: valgrind
Version: 3.24 GIT
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: taviana...@gmail.com
Target Milestone: ---
Created attachment 177557
--> https://bugs.kde.org/attachment.cgi?id=177557&action=edit
Test case
The attached test case creates a POSIX timer that should deliver SIGALRM every
100 microseconds, creates a background thread, blocks SIGALRM in the main
thread, and waits for the SIGALRM handler to fire 100 times. This runs fine on
bare metal, but on valgrind it hangs forever:
$ gcc -g -Wall vgalrm.c -o vgalrm
$ ./vgalrm
$ valgrind ./vgalrm
==2019420== Memcheck, a memory error detector
==2019420== Copyright (C) 2002-2024, and GNU GPL'd, by Julian Seward et al.
==2019420== Using Valgrind-3.24.0 and LibVEX; rerun with -h for copyright info
==2019420== Command: ./vgalrm
==2019420==
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