Dr. Memory reports warnings about unusual memory-related conditions that an application developer might like to know about. For example:

Error #12: WARNING: heap allocation failed
@0:00:01.500 in thread 3748
# 0 suppress.exe!warning_test1                       [e:\derek\drmemory\git\src\tests\suppress.c:179]
# 1 suppress.exe!test                                [e:\derek\drmemory\git\src\tests\suppress.c:282]
# 2 suppress.exe!main                                [e:\derek\drmemory\git\src\tests\suppress.c:297]
# 3 suppress.exe!__tmainCRTStartup                   [f:\sp\vctools\crt_bld\self_x86\crt\src\crt0.c:327]
# 4 KERNEL32.dll!BaseProcessStart