Open
Description
GEF+GDB version
GEF: (Standalone)
Blob Hash(/usr/share/gef/gef.py): c713c62efd950a24413b0834d9e8fd3563ba114f
SHA256(/usr/share/gef/gef.py): 12881b1d42fb490ca72896099daf5c128c7c7382be0779c8f8f7db3a9161ab6f
GDB: 14.2
GDB-Python: 3.12Operating System
Arch Linux
Describe the issue you encountered
Using some variable with the name tcache in the c code and compile with debug symbols, will cause errors in the output of heap bins.
I am not sure, if this problem also occurs for other variable names.
Do you read the docs and look at previously closed issues/PRs for similar cases?
No
Architecture impacted
- X86
- X64
- ARM
- ARM64
- MIPS
- MIPS64
- PPC
- PPC64
- RISCV
Describe your issue. Without a proper reproduction step-by-step, your issue will be ignored.
Compiling with -g causes problems when using command heap bins:
#include <stdlib.h>
int main(){
void * tcache[7];
for(int i = 0; i < 7; i ++){
tcache[i] = malloc(0x80);
*(char *)tcache[i] = i+1;
}
for(int i = 0 ; i < 7 ; i++){
free(tcache[i]);
}
}But renaming tcache variable, will fix the problem again.
Minimalist test case
Use this field for a minimal code to compile and spot the issue:
// compile with gcc -g
#include <stdlib.h>
int main(){
void * tcache[7];
for(int i = 0; i < 7; i ++){
tcache[i] = malloc(0x80);
*(char *)tcache[i] = i+1;
}
for(int i = 0 ; i < 7 ; i++){
free(tcache[i]);
}
}