Compilation failure on gcc-15.2.0

Review the supplied patch across the listed files under src/flash/nor, src/helper, src/rtos, src/server, and src/target. Start by reproducing the OpenOCD build with gcc-15.2.0, then check the proposed changes against the affected call sites. Done means OpenOCD compiles successfully with that compiler.

OpenOCD fails to compile on gcc-15.2.0. Fixed and include a patch. Feel free to use.

From cbacacbbfbfc5b1a9c8280ab25d9845201a58574 Mon Sep 17 00:00:00 2001
Date: Wed, 8 Jul 2026 14:24:10 +0200
Subject: [PATCH] fix compiler errors for gcc 15.2.0

---

src/flash/nor/ambiqmicro.c | 2 +-
src/flash/nor/at91sam7.c | 4 ++--
src/flash/nor/kinetis.c | 4 ++--
src/flash/nor/max32xxx.c | 2 +-
src/flash/nor/msp432.c | 2 +-
src/flash/nor/stellaris.c | 2 +-
src/flash/nor/stldr_driver.c | 4 ++--
src/flash/nor/stm32f2x.c | 2 +-
src/helper/log.c | 2 +-
src/helper/options.c | 2 +-
src/rtos/eCos.c | 2 +-
src/server/telnet_server.c | 2 +-
src/target/arc_jtag.c | 4 ++--
13 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/src/flash/nor/ambiqmicro.c b/src/flash/nor/ambiqmicro.c
index 2b458bc8f..bb893778c 100644
--- a/src/flash/nor/ambiqmicro.c
+++ b/src/flash/nor/ambiqmicro.c
@@ -124,7 +124,7 @@ FLASH_BANK_COMMAND_HANDLER(ambiqmicro_flash_bank_command)
if (CMD_ARGC < 6)
return ERROR_COMMAND_SYNTAX_ERROR;

• ambiqmicro_info = calloc(sizeof(struct ambiqmicro_flash_bank), 1);

• ambiqmicro_info = calloc(1, sizeof(struct ambiqmicro_flash_bank));

  bank->driver_priv = ambiqmicro_info;

diff --git a/src/flash/nor/at91sam7.c b/src/flash/nor/at91sam7.c
index 6879a1bf2..86c80765f 100644
--- a/src/flash/nor/at91sam7.c
+++ b/src/flash/nor/at91sam7.c
@@ -560,7 +560,7 @@ static int at91sam7_read_part_info(struct flash_bank bank)
if (bnk > 0) {
if (!t_bank->next) {
/ create a new flash bank element */

•   		struct flash_bank *fb = calloc(sizeof(struct flash_bank), 1);
  

•   		struct flash_bank *fb = calloc(1, sizeof(struct flash_bank));
    		if (!fb) {
    			LOG_ERROR("No memory for flash bank");
    			return ERROR_FAIL;
  

@@ -748,7 +748,7 @@ FLASH_BANK_COMMAND_HANDLER(at91sam7_flash_bank_command)
if (bnk > 0) {
if (!t_bank->next) {
/* create a new bank element */

•   		struct flash_bank *fb = calloc(sizeof(struct flash_bank), 1);
  

•   		struct flash_bank *fb = calloc(1, sizeof(struct flash_bank));
    		if (!fb) {
    			LOG_ERROR("No memory for flash bank");
    			return ERROR_FAIL;
  

diff --git a/src/flash/nor/kinetis.c b/src/flash/nor/kinetis.c
index e8074e35b..fee36444e 100644
--- a/src/flash/nor/kinetis.c
+++ b/src/flash/nor/kinetis.c
@@ -930,7 +930,7 @@ FLASH_BANK_COMMAND_HANDLER(kinetis_flash_bank_command)
k_chip = kinetis_get_chip(target);

if (!k_chip) {

•   k_chip = calloc(sizeof(struct kinetis_chip), 1);
  

•   k_chip = calloc(1, sizeof(struct kinetis_chip));
    if (!k_chip) {
    	LOG_ERROR("No memory");
    	return ERROR_FAIL;
  

@@ -1031,7 +1031,7 @@ static int kinetis_create_missing_banks(struct kinetis_chip *k_chip)
bank_idx - k_chip->num_pflash_blocks);
}

•   bank = calloc(sizeof(struct flash_bank), 1);
  

•   bank = calloc(1, sizeof(struct flash_bank));
    if (!bank)
    	return ERROR_FAIL;
  

diff --git a/src/flash/nor/max32xxx.c b/src/flash/nor/max32xxx.c
index 51d6ae271..59a14af8b 100644
--- a/src/flash/nor/max32xxx.c
+++ b/src/flash/nor/max32xxx.c
@@ -87,7 +87,7 @@ FLASH_BANK_COMMAND_HANDLER(max32xxx_flash_bank_command)
return ERROR_FLASH_BANK_INVALID;
}

• info = calloc(sizeof(struct max32xxx_flash_bank), 1);

• info = calloc(1, sizeof(struct max32xxx_flash_bank));
  COMMAND_PARSE_NUMBER(uint, CMD_ARGV[2], info->flash_size);
  COMMAND_PARSE_NUMBER(uint, CMD_ARGV[6], info->flc_base);
  COMMAND_PARSE_NUMBER(uint, CMD_ARGV[7], info->sector_size);
  diff --git a/src/flash/nor/msp432.c b/src/flash/nor/msp432.c
  index 5e2935d02..b5e2b0bf8 100644
  --- a/src/flash/nor/msp432.c
  +++ b/src/flash/nor/msp432.c
  @@ -937,7 +937,7 @@ static int msp432_probe(struct flash_bank *bank)

  if (is_main && MSP432P4 == msp432_bank->family_type) {
  /* Create the info flash bank needed by MSP432P4 variants */

•   struct flash_bank *info = calloc(sizeof(struct flash_bank), 1);
  

•   struct flash_bank *info = calloc(1, sizeof(struct flash_bank));
    if (!info)
    	return ERROR_FAIL;
  

diff --git a/src/flash/nor/stellaris.c b/src/flash/nor/stellaris.c
index 972686e3f..eab6244d4 100644
--- a/src/flash/nor/stellaris.c
+++ b/src/flash/nor/stellaris.c
@@ -453,7 +453,7 @@ FLASH_BANK_COMMAND_HANDLER(stellaris_flash_bank_command)
if (CMD_ARGC < 6)
return ERROR_COMMAND_SYNTAX_ERROR;

• stellaris_info = calloc(sizeof(struct stellaris_flash_bank), 1);

• stellaris_info = calloc(1, sizeof(struct stellaris_flash_bank));
  bank->base = 0x0;
  bank->driver_priv = stellaris_info;

diff --git a/src/flash/nor/stldr_driver.c b/src/flash/nor/stldr_driver.c
index bdc8678a3..559a29b2a 100644
--- a/src/flash/nor/stldr_driver.c
+++ b/src/flash/nor/stldr_driver.c
@@ -264,7 +264,7 @@ static int stldr_parse(struct flash_bank *bank, const char *stldr_path)
return ERROR_FAIL;
}

•   struct stldr_section *section = calloc(sizeof(struct stldr_section), 1);
  

•   struct stldr_section *section = calloc(1, sizeof(struct stldr_section));
    if (!section) {
    	free(content);
    	return ERROR_FAIL;
  

@@ -416,7 +416,7 @@ FLASH_BANK_COMMAND_HANDLER(stldr_flash_bank_command)
if (CMD_ARGC != 6 && CMD_ARGC != 7)
return ERROR_COMMAND_SYNTAX_ERROR;

• stldr_info = calloc(sizeof(struct stldr_flash_bank), 1);

• stldr_info = calloc(1, sizeof(struct stldr_flash_bank));
  if (!stldr_info) {
  LOG_ERROR("Out of memory");
  return ERROR_FAIL;
  diff --git a/src/flash/nor/stm32f2x.c b/src/flash/nor/stm32f2x.c
  index 4e0f73182..3bafde56f 100644
  --- a/src/flash/nor/stm32f2x.c
  +++ b/src/flash/nor/stm32f2x.c
  @@ -1020,7 +1020,7 @@ static int stm32x_probe(struct flash_bank *bank)
  assert(num_sectors > 0);

  bank->num_sectors = num_sectors;
  

•   bank->sectors = calloc(sizeof(struct flash_sector), num_sectors);
  

•   bank->sectors = calloc(num_sectors, sizeof(struct flash_sector));
  
    if (stm32x_otp_is_f7(bank))
    	bank->size = STM32F7_OTP_SIZE;
  

diff --git a/src/helper/log.c b/src/helper/log.c
index 471069ade..2bf4efc78 100644
--- a/src/helper/log.c
+++ b/src/helper/log.c
@@ -81,7 +81,7 @@ static void log_puts(enum log_levels level,
const char *function,
const char *string)
{

• char *f;

• const char *f;

  if (!log_output) {
  /* log_init() not called yet; print on stderr */
  diff --git a/src/helper/options.c b/src/helper/options.c
  index 61a101469..643007931 100644
  --- a/src/helper/options.c
  +++ b/src/helper/options.c
  @@ -151,7 +151,7 @@ static char *find_relative_path(const char *from, const char *to)
  while (from[0] != '\0') {
  if (from[0] != '/')
  i++;

•   char *next = strchr(from, '/');
  

•   const char *next = strchr(from, '/');
    if (!next)
    	break;
    from = next + 1;
  

diff --git a/src/rtos/eCos.c b/src/rtos/eCos.c
index 10ed12809..aca2f4ebc 100644
--- a/src/rtos/eCos.c
+++ b/src/rtos/eCos.c
@@ -511,7 +511,7 @@ static bool ecos_escape_string(const char *raw, char *out, size_t limit)
continue;
}

•   char *fidx = strchr(tokens, *raw);
  

•   const char *fidx = strchr(tokens, *raw);
    if (!fidx) {
    	/* Should never happen assuming xmlchars
    	 * vector and tokens string match. */
  

diff --git a/src/server/telnet_server.c b/src/server/telnet_server.c
index 938bc5b06..fa3523553 100644
--- a/src/server/telnet_server.c
+++ b/src/server/telnet_server.c
@@ -68,7 +68,7 @@ static int telnet_outputline(struct connection *connection, const char *line)

/* process lines in buffer */
while (*line) {

•   char *line_end = strchr(line, '\n');
  

•   const char *line_end = strchr(line, '\n');
  
    if (line_end)
    	len = line_end-line;
  

diff --git a/src/target/arc_jtag.c b/src/target/arc_jtag.c
index ddb4f6232..a186709c6 100644
--- a/src/target/arc_jtag.c
+++ b/src/target/arc_jtag.c
@@ -298,7 +298,7 @@ static int arc_jtag_read_registers(struct arc_jtag *jtag_info, uint32_t type,
ARC_JTAG_READ_FROM_CORE_REG : ARC_JTAG_READ_FROM_AUX_REG);
arc_jtag_enque_set_transaction(jtag_info, transaction, TAP_DRPAUSE);

• uint8_t *data_buf = calloc(sizeof(uint8_t), count * 4);

• uint8_t *data_buf = calloc(count * 4, sizeof(uint8_t));

  arc_jtag_enque_register_rw(jtag_info, addr, data_buf, NULL, count);

@@ -498,7 +498,7 @@ int arc_jtag_read_memory(struct arc_jtag *jtag_info, uint32_t addr,
if (!count)
return ERROR_OK;

• data_buf = calloc(sizeof(uint8_t), count * 4);

• data_buf = calloc(count * 4, sizeof(uint8_t));
  arc_jtag_enque_reset_transaction(jtag_info);

  /* We are reading from memory. */
  --
  2.53.0