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guard against passing stdin/stderr as output

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This commit is contained in:
daan 2019-08-30 14:37:04 -07:00
parent 86ee1722f5
commit 9fc726619a
1 changed files with 2 additions and 1 deletions
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3
src/options.c
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@ -150,6 +150,7 @@ static void mi_out_stderr(const char* msg) {
// Default output handler // Default output handler
// -------------------------------------------------------- // --------------------------------------------------------
#pragma warning(suppress:4180)
static volatile _Atomic(mi_output_fun*) mi_out_default; // = NULL static volatile _Atomic(mi_output_fun*) mi_out_default; // = NULL
static mi_output_fun* mi_out_get_default(void) { static mi_output_fun* mi_out_get_default(void) {
@ -179,7 +180,7 @@ static void mi_vfprintf( mi_output_fun* out, const char* prefix, const char* fmt
if (fmt==NULL) return; if (fmt==NULL) return;
if (_mi_preloading() || recurse) return; if (_mi_preloading() || recurse) return;
recurse = true; recurse = true;
if (out==NULL) out = mi_out_get_default(); if (out==NULL || (FILE*)out==stdout || (FILE*)out==stderr) out = mi_out_get_default();
vsnprintf(buf,sizeof(buf)-1,fmt,args); vsnprintf(buf,sizeof(buf)-1,fmt,args);
if (prefix != NULL) out(prefix); if (prefix != NULL) out(prefix);
out(buf); out(buf);