common: add a new literal + fix warnings

src/test/core_log_max/call_all.c.generated

@@ -479,6 +479,8 @@ call_all_CORE_LOG_WARNING(void)
 	CORE_LOG_WARNING("out of memory - unable to track entries");
 	// src/libpmemobj/palloc.c
 	CORE_LOG_WARNING("unable to track runtime chunk state");
+	// src/libpmemobj/stats.c
+	CORE_LOG_WARNING("heap_curr_allocated underflowed: %lu > heap.size: %lu ; recalculating", _lu, _lu);
 }
 
 void

src/test/core_log_max/core_log_max.c

@@ -120,7 +120,7 @@ test_ERR_W_ERRNO(const struct test_case *tc, int argc, char *argv[])
 	return NO_ARGS_CONSUMED;
 }
 
-#define TOTAL_MESSAGE_NUM_EXPECTED 214
+#define TOTAL_MESSAGE_NUM_EXPECTED 215
 static int Max_message_len = 0;
 static int Total_message_num = 0;
 static char The_longest_message[BIG_BUF_SIZE];

utils/call_stacks_analysis/log_call_all_generate.py

@@ -48,7 +48,7 @@ def bad_line(reason: str, line: str) -> None:
 # Extract all calls from the code base
 
 def extract_append_code(file_name: str, start_line: int, code: str) -> str:
-    if not re.search(f'\.[ch]$', file_name):
+    if not re.search(r'\.[ch]$', file_name):
         print(f'Unsupported file type: {file_name}')
         exit(1)
 
@@ -63,7 +63,7 @@ def extract_append_code(file_name: str, start_line: int, code: str) -> str:
             code += " " + line
             if code[-1] == ';':
                 break
-            if re.search(f'(//|/\*)', code):
+            if re.search(r'(//|/\*)', code):
                 bad_line('Comment found', code)
     return code
 
@@ -276,6 +276,7 @@ def call_get_format_tokens(call):
     'PRIx64': 'lx',
     'PRIu64': 'lu',
     'SDS_REINIT_SUFFIX': ' - reinitializing the ADR failure detection state.',
+    'CURR_ALLOCATED_UNDERFLOW_FMT': 'heap_curr_allocated underflowed: %lu > heap.size: %lu ; recalculating'
 }
 
 def token_stringify(token: str) -> str: