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libgap: save/restore recursion depth #4258

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Feb 23, 2021
Merged

libgap: save/restore recursion depth #4258

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4 changes: 4 additions & 0 deletions src/libgap-api.c
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@
#include "ariths.h"
#include "bool.h"
#include "calls.h"
#include "funcs.h"
#include "gap.h"
#include "gapstate.h"
#include "gasman.h"
Expand Down Expand Up @@ -482,6 +483,7 @@ jmp_buf * GAP_GetReadJmpError(void)


static volatile sig_atomic_t EnterStackCount = 0;
static volatile Int RecursionDepth;


// These are wrapped by the macros GAP_EnterStack() and GAP_LeaveStack()
Expand Down Expand Up @@ -517,6 +519,7 @@ int GAP_Error_Prejmp_(const char * file, int line)
if (EnterStackCount > 0) {
return 1;
}
RecursionDepth = GetRecursionDepth();
return 0;
}

Expand All @@ -535,6 +538,7 @@ void GAP_Error_Postjmp_Returning_(void)
if (EnterStackCount > 0) {
EnterStackCount = -EnterStackCount;
}
SetRecursionDepth(RecursionDepth);
}


Expand Down