[BernardXiong]

Summary

timer_gettime() and timer_settime() used the caller-supplied timer_t directly as an index into _g_timerid[TIMER_ID_MAX]. timer_delete() already validates the same id range; this brings the sibling paths in line.

Fixes #11980.

Change

Before indexing _g_timerid[], reject ids >= TIMER_ID_MAX with EINVAL in:

• timer_gettime()
• timer_settime()

Validation

• bsp/simulator with RT_USING_POSIX_TIMER=y: the POSIX timer block is active and the modified ctime.c passes a syntax check with no errors. A full simulator link is not possible in this environment because enabling POSIX timers collides with the host signal.h/time.h definitions (pre-existing host-port issue); the change itself introduces no new diagnostics compared with the unmodified file.
• Runtime RT-Smart QEMU test was not run locally (no cross toolchain).

Note

#11938 touches the same functions for 64-bit truncation but does not validate the id; whichever lands second may need a trivial rebase.

[github-actions]

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[github-actions]

📌 Code Review Assignment

🏷️ Tag: components

Reviewers: @Maihuanyi

Changed Files (Click to expand)

• components/libc/compilers/common/ctime.c

🏷️ Tag: components_libc

Reviewers: @GorrayLi @mysterywolf

Changed Files (Click to expand)

• components/libc/compilers/common/ctime.c

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📊 Current Review Status (Last Updated: 2026-11-07 03:05 CST)

• ⌛ @GorrayLi Pending Review
• ⌛ @Maihuanyi Pending Review
• ⌛ @mysterywolf Pending Review

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[github-actions]

MemBrowse Memory Report · Explore what changed →

No memory changes detected for:

• at32f415-start
• esp32-c3
• gd32105r-start
• hc32f334
• hpmicro-hpm5100evk
• hpmicro-hpm5301evklite
• infineon-psoc6
• k230
• loongson-ls1cdev
• nordic-nrf51822
• nuvoton-m487
• nxp-lpc1114
• qemu-virt64-aarch64
• raspberry-pico-rp2040
• renesas-ra2l1
• simulator
• stm32f407-rt-spark
• stm32l475-atk-pandora-llvm
• wch-ch32v208w-r0
• x86
• xuantie-e901plus

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